1 dnl Process this file with autoconf to produce a configure script.
3 dnl There are two types of comments in this file.
4 dnl Comments that refer to Autoconf macros begin with "dnl", and m4
5 dnl discards them. Other comments begin with "#", and they get copied
6 dnl to the configure script, hopefully making it easier to read.
8 dnl Autoconf 2.13 generates an incomplete config.h.in; see ELinks bug 936.
9 dnl Autoconf 2.61 is installed in the computer that generates our nightly
10 dnl snapshots, so we need to be compatible with that. (Also, some files
11 dnl in Autoconf 2.62 and 2.63 sources are not GPLv2 compatible.)
14 AC_CONFIG_SRCDIR([src/main/main.c])
15 AC_CONFIG_AUX_DIR(config)
21 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Package version])
22 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Package version])
23 AC_CONFIG_HEADERS(config.h)
25 AC_CHECK_PROG(ACLOCAL,[aclocal],[aclocal],[config/missing aclocal])
26 AC_CHECK_PROG(AUTOCONF,[autoconf],[autoconf],[config/missing autoconf])
27 AC_CHECK_PROG(AUTOHEADER,[autoheader],[autoheader],[config/missing autoheader])
31 for make in gnumake gmake make false; do
32 if test "x$MAKE" = x; then
33 AC_PATH_PROGS(MAKE, "$make")
39 # Cleanup if we are configuring with a previous build in the tree
40 if test -e Makefile.config; then
41 AC_MSG_CHECKING([for previous build to clean])
42 "$MAKE" -C "$builddir/src" cleanall >/dev/null 2>/dev/null
46 # ===================================================================
47 # Load feature configuration file and start logging features.
48 # ===================================================================
50 features="features.conf"
51 test -f "$srcdir/$features" && . "$srcdir/$features"
52 test -f "$builddir/$features" && . "$builddir/$features"
53 echo "Feature summary:" > features.log
55 # ===================================================================
56 # Checks for programs.
57 # ===================================================================
60 AC_CHECK_TOOL([LD], [ld])
62 AC_PATH_PROGS(AWK, "$AWK")
66 AC_PATH_PROGS(GIT, "git")
67 AC_PATH_PROGS(SPARSE, "sparse")
76 if test "x$CONFIG_DOC" != xno; then
77 AC_PATH_PROGS(PYTHON, "python")
78 if test "x$PYTHON" != "x"; then
79 EL_CONFIG(CONFIG_ASCIIDOC, [AsciiDoc])
80 EL_CONFIG(MANUAL_ASCIIDOC, [HTML (one file)])
81 EL_CONFIG(MAN_ASCIIDOC, [HTML])
84 AC_PATH_PROGS(XMLTO, "xmlto")
85 if test "x$XMLTO" != "x"; then
86 EL_CONFIG(CONFIG_XMLTO, [XmlTo])
87 EL_CONFIG(MANUAL_XMLTO, [HTML (multiple files)])
88 EL_CONFIG(MAN_XMLTO, [man (groff)])
91 AC_PATH_PROGS(JW, "jw")
92 if test "x$JW" != "x"; then
93 EL_CONFIG(CONFIG_JW, [JadeWrapper])
94 EL_CONFIG(MANUAL_JW, [PDF])
97 AC_PATH_PROGS(POD2HTML, "pod2html")
98 if test "x$POD2HTML" != "x"; then
99 EL_CONFIG(CONFIG_POD2HTML, [Pod2HTML])
102 AC_PATH_PROGS(DOXYGEN, "doxygen")
103 if test "x$DOXYGEN" != "x"; then
104 EL_CONFIG(CONFIG_DOXYGEN, [Doxygen])
105 api_srcdir="$(cd "$srcdir" && pwd)/src"
110 AC_SUBST(CONFIG_ASCIIDOC)
111 AC_SUBST(CONFIG_DOXYGEN)
112 AC_SUBST(CONFIG_POD2HTML)
113 AC_SUBST(CONFIG_XMLTO)
116 EL_CONFIG_DEPENDS(CONFIG_DOC, [CONFIG_ASCIIDOC CONFIG_XMLTO CONFIG_JW CONFIG_POD2HTML], [Documentation Tools])
117 EL_CONFIG_DEPENDS(CONFIG_MANUAL, [MANUAL_ASCIIDOC MANUAL_XMLTO MANUAL_JW], [Manual Formats])
118 EL_CONFIG_DEPENDS(CONFIG_MANPAGE, [MAN_ASCIIDOC MAN_XMLTO], [Man Page Formats])
119 EL_CONFIG_DEPENDS(CONFIG_APIDOCS, [CONFIG_DOXYGEN], [API Documentation])
121 # gcc specific options (to be continued at the bottom of configure)
122 if test "x$ac_cv_c_compiler_gnu" = "xyes"; then
123 # We want to see all warnings and live with none.
124 # We can't set up -Werror here as there may be some warnings in test
125 # suite of configure, and we don't want to fail them.
126 CFLAGS="$CFLAGS -Wall"
129 # ===================================================================
130 # Checks for special OSes.
131 # ===================================================================
133 dnl EL_CHECK_COMPILER_MACRO(define, name, flagname)
134 AC_DEFUN([EL_CHECK_COMPILER_MACROS],
136 AC_MSG_CHECKING([for $2])
139 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[#ifndef $flag
141 #endif ]])],[$1=yes],[$1=no])
142 if test "[$]$1" = yes; then
143 EL_CONFIG([$1], [$2])
151 EL_CHECK_COMPILER_MACROS(CONFIG_OS_BEOS, [BEOS], [__BEOS__])
152 AC_SUBST(CONFIG_OS_BEOS)
154 EL_CHECK_COMPILER_MACROS(CONFIG_OS_RISCOS, [RISCOS], [__riscos__])
155 AC_SUBST(CONFIG_OS_RISCOS)
157 EL_CHECK_COMPILER_MACROS(CONFIG_OS_WIN32, [WIN32], [_WIN32 __WIN32__])
158 AC_SUBST(CONFIG_OS_WIN32)
160 EL_CHECK_COMPILER_MACROS(CONFIG_OS_OS2, [EMX], [__EMX__])
161 AC_SUBST(CONFIG_OS_OS2)
162 test "$CONFIG_OS_OS2" = yes && LDFLAGS=`echo "$LDFLAGS" | sed "s/-Zexe//g"`
164 AC_MSG_CHECKING([for UNIX])
165 dnl FIXME: some depend kind of mechanism
166 if test "$CONFIG_OS_BEOS" = no && \
167 test "$CONFIG_OS_RISCOS" = no && \
168 test "$CONFIG_OS_WIN32" = no && \
169 test "$CONFIG_OS_OS2" = no; then
170 EL_CONFIG(CONFIG_OS_UNIX, [UNIX])
174 AC_MSG_RESULT($CONFIG_OS_UNIX)
175 AC_SUBST(CONFIG_OS_UNIX)
177 # ===================================================================
178 # Checks for header files.
179 # ===================================================================
186 AC_CHECK_HEADERS(wchar.h wctype.h)
187 AC_CHECK_HEADERS(fcntl.h limits.h time.h unistd.h)
188 AC_CHECK_HEADERS(sigaction.h)
189 AC_CHECK_HEADERS(arpa/inet.h)
190 AC_CHECK_HEADERS(netinet/in_systm.h netinet/in_system.h netinet/ip.h)
191 AC_CHECK_HEADERS(netdb.h netinet/in.h netinet/in6_var.h)
192 AC_CHECK_HEADERS(ifaddrs.h)
193 AC_CHECK_HEADERS(sys/cygwin.h io.h)
194 AC_CHECK_HEADERS(sys/fmutex.h)
195 AC_CHECK_HEADERS(sys/ioctl.h sys/sockio.h)
196 AC_CHECK_HEADERS(sys/resource.h)
197 AC_CHECK_HEADERS(sys/select.h)
198 AC_CHECK_HEADERS(sys/signal.h)
199 AC_CHECK_HEADERS(sys/socket.h)
200 AC_CHECK_HEADERS(sys/time.h)
201 AC_CHECK_HEADERS(sys/utsname.h)
202 AC_CHECK_HEADERS([net/if.h], [], [],
203 [[#ifdef HAVE_SYS_SOCKET_H
204 # include <sys/socket.h> /* <net/if.h> on Mac OS X 10.5.4 needs this */
207 AC_CHECK_HEADERS(stdint.h inttypes.h)
208 AC_CHECK_HEADERS(locale.h pwd.h)
209 AC_CHECK_HEADERS(termios.h)
212 AC_CHECK_HEADERS(sys/un.h,
213 [CONFIG_INTERLINK=yes
214 EL_CONFIG([CONFIG_INTERLINK], [interlinking])],
215 [CONFIG_INTERLINK=no])
216 AC_SUBST(CONFIG_INTERLINK)
218 # ===================================================================
219 # Checks for typedefs, structures, and compiler characteristics.
220 # ===================================================================
225 AC_MSG_CHECKING([[for C99-conforming inline]])
226 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
243 [AC_MSG_RESULT([[yes]])
244 AC_DEFINE([NONSTATIC_INLINE], [inline],
245 [Define as inline if the compiler lets you declare a function without inline, then define it with inline, and have that definition refer to identifiers with internal linkage. This is allowed by C99 6.7.4p6 and 6.7.4p3 together. Otherwise define as nothing.])],
246 [AC_MSG_RESULT([[no]])
247 AC_DEFINE([NONSTATIC_INLINE], [])])
248 EL_CHECK_CODE(typeof, HAVE_TYPEOF, [], [int a; typeof(a) b;])
253 EL_CHECK_TYPE(ssize_t, int)
254 EL_CHECK_SYS_TYPE(long long, HAVE_LONG_LONG, [])
255 EL_CHECK_SYS_TYPE(off_t, HAVE_OFF_T, [])
256 EL_CHECK_INT_TYPE(int32_t, HAVE_INT32_T)
257 EL_CHECK_INT_TYPE(uint32_t, HAVE_UINT32_T)
258 EL_CHECK_INT_TYPE(uint16_t, HAVE_UINT16_T)
260 AC_CHECK_SIZEOF(char, 1)
261 AC_CHECK_SIZEOF(short, 2)
262 AC_CHECK_SIZEOF(int, 4)
263 AC_CHECK_SIZEOF(long, 4)
264 test "x$HAVE_LONG_LONG" = xyes && AC_CHECK_SIZEOF(long long, 8)
265 test "x$HAVE_OFF_T" = xyes && AC_CHECK_SIZEOF(off_t, 4)
267 # Check for variadic macros
268 EL_CHECK_CODE([variadic macros], HAVE_VARIADIC_MACROS,
270 #define a(b,c...) printf(b,##c)],
271 [a("foo");a("%s","bar");a("%s%s","baz","quux");])
273 # ===================================================================
274 # Checks for library functions.
275 # ===================================================================
277 AC_PROG_GCC_TRADITIONAL
281 AC_CHECK_FUNCS(atoll gethostbyaddr herror strerror)
282 AC_CHECK_FUNCS(popen uname access chmod alarm timegm mremap)
283 AC_CHECK_FUNCS(strcasecmp strncasecmp strcasestr strstr strchr strrchr)
284 AC_CHECK_FUNCS(memmove bcopy stpcpy strdup index isdigit mempcpy memrchr)
285 AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf)
286 AC_CHECK_FUNCS(getifaddrs getpwnam inet_pton inet_ntop)
287 AC_CHECK_FUNCS(fflush fsync fseeko ftello sigaction)
288 AC_CHECK_FUNCS(gettimeofday clock_gettime)
289 AC_CHECK_FUNCS(setitimer, HAVE_SETITIMER=yes)
291 AC_CHECK_FUNCS([cygwin_conv_to_full_win32_path])
293 AC_CHECK_FUNCS(setenv putenv, HAVE_SETENV_OR_PUTENV=yes)
294 AC_CHECK_FUNCS(unsetenv)
295 AC_CHECK_FUNCS(getuid, HAVE_GETUID=yes)
296 AC_CHECK_FUNCS(geteuid, HAVE_GETEUID=yes)
298 AC_CHECK_FUNCS(wcwidth, HAVE_WCWIDTH=yes)
302 # These aren't probably needed now, as they are commented in links.h.
303 # I've no idea about their historical background, but I keep them here
304 # just in the case they will help later. --pasky
305 AC_CHECK_FUNCS(getpid, HAVE_GETPID=yes)
306 AC_CHECK_FUNCS(setpgid getpgid setpgrp getpgrp)
307 AC_CHECK_FUNCS(raise, HAVE_RAISE=yes)
308 AC_CHECK_FUNCS(kill, HAVE_KILL=yes)
310 AC_CHECK_FUNCS(fpathconf, HAVE_FPATHCONF=yes)
312 if test x"$HAVE_RAISE" = x; then
313 if test x"$HAVE_KILL" = x || test x"$HAVE_GETPID" = x; then
314 AC_MSG_ERROR([Unable to emulate raise()])
318 AC_CACHE_CHECK([for __va_copy],el_cv_HAVE_VA_COPY,[
319 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
320 va_list ap1,ap2;]], [[__va_copy(ap1,ap2);]])],[el_cv_HAVE_VA_COPY=yes],[el_cv_HAVE_VA_COPY=no])])
321 if test x"$el_cv_HAVE_VA_COPY" = x"yes"; then
322 EL_DEFINE(HAVE_VA_COPY, __va_copy)
325 AC_CACHE_CHECK([for sysconf(_SC_PAGE_SIZE)],el_cv_HAVE_SC_PAGE_SIZE,[
326 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
327 ]], [[int page_size = sysconf(_SC_PAGE_SIZE);]])],[el_cv_HAVE_SC_PAGE_SIZE=yes],[el_cv_HAVE_SC_PAGE_SIZE=no])])
328 if test x"$el_cv_HAVE_SC_PAGE_SIZE" = x"yes"; then
329 EL_DEFINE(HAVE_SC_PAGE_SIZE, _SC_PAGE_SIZE)
332 AC_CACHE_CHECK([for C99 vsnprintf],el_cv_HAVE_C99_VSNPRINTF,[
333 AC_RUN_IFELSE([AC_LANG_SOURCE([[
341 int bar(char *buf, const char *format, va_list ap)
343 return vsnprintf(buf, 0, format, ap);
346 void foo(const char *format, ...) {
350 va_start(ap, format);
351 len = bar(buf, format, ap);
353 if ((len != 6) && (len != 7)) exit(1); /* \n -> \r\n */
355 va_start(ap, format);
356 len = bar(buf, format, ap);
358 if ((len != 6) && (len != 7)) exit(1);
360 if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(1);
364 main() { foo("hello\n"); }
365 ]])],[el_cv_HAVE_C99_VSNPRINTF=yes],[el_cv_HAVE_C99_VSNPRINTF=no],[el_cv_HAVE_C99_VSNPRINTF=cross])])
366 if test x"$el_cv_HAVE_C99_VSNPRINTF" = x"yes"; then
367 EL_DEFINE(HAVE_C99_VSNPRINTF, [C99 compliant vsnprintf()])
370 # OpenSSL and Lua frequently need dlopen
371 AC_CHECK_LIB(dl, dlopen)
373 # ===================================================================
374 # Checks for libraries.
375 # ===================================================================
377 AC_CHECK_FUNC(socket, cf_result=yes, cf_result=no)
378 if test "$cf_result" = no; then
379 AC_CHECK_LIB(socket, socket)
382 AC_CHECK_FUNC(setsockopt, cf_result=yes, cf_result=no)
383 if test "$cf_result" = no; then
384 AC_CHECK_LIB(socket, setsockopt)
387 AC_CHECK_FUNC(gethostbyname, cf_result=yes, cf_result=no)
388 if test "$cf_result" = no; then
389 AC_CHECK_LIB(socket, gethostbyname, cf_result=yes, cf_result=no)
390 if test "$cf_result" = no; then
391 AC_CHECK_LIB(nsl, gethostbyname)
393 test -z "`echo $LIBS | grep -- -lsocket`" && LIBS="$LIBS -lsocket"
397 # ===================================================================
398 # Checks for packaging specific options.
399 # ===================================================================
401 AC_ARG_WITH(xterm, [ --with-xterm how to invoke the X terminal emulator],
402 [ if test "$withval" != no && test "$withval" != yes; then
403 AC_DEFINE_UNQUOTED(XTERM, "$withval", [How to invoke XTerm])
406 # ===================================================================
407 # Checks for a libraries, optional even if installed.
408 # ===================================================================
410 dnl EL_CHECK_OPTIONAL_LIBRARY(define, name, header, lib, function)
411 AC_DEFUN([EL_CHECK_OPTIONAL_LIBRARY],
413 AC_MSG_CHECKING([for $2 support])
415 if test "[$]$1" != no; then
418 if test -n "$withval" && test -d "$withval"; then
419 # Be a little more careful when setting
420 # include and lib directories. This way
421 # $withval will work when includes are
422 # there but the library is in the common
423 # /usr/lib ... Does the right thing when
424 # looking for gc on Debian.
425 if test -d "$withval/include"; then
426 CFLAGS="$CFLAGS -I$withval/include"
427 CPPFLAGS="$CPPFLAGS -I$withval/include"
429 CFLAGS="$CFLAGS -I$withval"
430 CPPFLAGS="$CPPFLAGS -I$withval"
432 if test -d "$withval/lib"; then
433 LDFLAGS="$LDFLAGS -L$withval/lib"
437 AC_CHECK_HEADERS([$3], [$1=yes], [$1=no; break;])
438 if test "[$]$1" = yes; then
439 AC_CHECK_LIB([$4], [$5], [$1=yes], [$1=no])
442 if test "[$]$1" = yes; then
443 EL_CONFIG([$1], [$2])
446 if test -n "[$]WITHVAL_$1" &&
447 test "x[$]WITHVAL_$1" != xno; then
448 AC_MSG_ERROR([$2 not found])
453 AC_MSG_RESULT(disabled)
457 dnl EL_CONFIG_OPTIONAL_LIBRARY(define, name, header, lib, function, confhelp)
458 AC_DEFUN([EL_CONFIG_OPTIONAL_LIBRARY],
460 if test "x[$]$1" != xno; then $1=yes; fi
463 AC_ARG_WITH([$2], [$6], [WITHVAL_$1="[$]withval"])
464 if test "x[$]WITHVAL_$1" = xno; then $1=no; fi
465 if test "x[$]WITHVAL_$1" = xyes; then $1=yes; fi
467 EL_CHECK_OPTIONAL_LIBRARY([$1], [$2], [$3], [$4], [$5])
469 EL_LOG_CONFIG([$1], [$2], [])
472 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GPM, gpm, gpm.h, gpm, Gpm_Open,
473 [ --without-gpm disable gpm (mouse) support])
475 # ELinks calls deflateInit2 with windowBits = MAX_WBITS | 32, to
476 # enable automatic decoding of both zlib and gzip headers. This
477 # feature was added in zlib 1.2.0.2; earlier versions return an error.
478 # The gzclearerr function was also added in zlib 1.2.0.2, so check for
479 # that, even though ELinks does not actually call gzclearerr.
480 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GZIP, zlib, zlib.h, z, gzclearerr,
481 [ --without-zlib disable zlib support])
483 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_BZIP2, bzlib, bzlib.h, bz2, BZ2_bzReadOpen,
484 [ --without-bzlib disable bzlib support])
486 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_IDN, idn, idna.h, idn, stringprep_check_version,
487 [ --without-idn disable international domain names support])
489 # LZMA disabled by default, because of little usability and compilation problems
491 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_LZMA, lzma, lzma.h, lzma, lzma_code,
492 [ --with-lzma enable lzma encoding support])
494 # ===================================================================
495 # Check for GSSAPI, optional even if installed.
496 # ===================================================================
500 AC_ARG_WITH(gssapi, [ --with-gssapi enable GSSAPI support],
501 [ if test "x$withval" != xno; then enable_gssapi=yes; fi ])
503 AC_MSG_CHECKING([for GSSAPI])
505 if test "$enable_gssapi" = "yes"; then
507 GSSAPI_CFLAGS=`krb5-config --cflags gssapi`
508 GSSAPI_LIBS=`krb5-config --libs gssapi`
509 CFLAGS="$GSSAPI_CFLAGS $CFLAGS"
510 LIBS="$GSSAPI_LIBS $LIBS"
511 EL_CONFIG(CONFIG_GSSAPI, [GssApi])
516 AC_SUBST(CONFIG_GSSAPI)
518 # ===================================================================
519 # Bookmark and XBEL support
520 # ===================================================================
524 EL_ARG_ENABLE(CONFIG_BOOKMARKS, bookmarks, [Bookmarks],
525 [ --disable-bookmarks disable bookmark support])
527 # Check whether --enable-xbel or --disable-xbel was given.
528 if test "x${enable_xbel}" != xno; then
529 AC_CHECK_HEADERS(expat.h, HAVE_LIBEXPAT=yes, HAVE_LIBEXPAT=no)
531 if test "$HAVE_LIBEXPAT" = yes; then
532 AC_CHECK_LIB(expat, XML_ParserCreate, HAVE_LIBEXPAT=yes, HAVE_LIBEXPAT=no)
533 if test "$HAVE_LIBEXPAT" = yes; then
540 EL_ARG_DEPEND(CONFIG_XBEL_BOOKMARKS, xbel, [CONFIG_BOOKMARKS:yes HAVE_LIBEXPAT:yes],
542 [ --disable-xbel disable XBEL bookmark support (requires expat)])
544 if test "$CONFIG_XBEL_BOOKMARKS" != yes; then
548 # ===================================================================
549 # Checks for BSD sysmouse
550 # ===================================================================
552 HAVE_SYSMOUSE_HEADER="no"
554 # Either of these header files provides the (same) sysmouse interface
555 AC_CHECK_HEADERS(sys/consio.h machine/console.h, [HAVE_SYSMOUSE_HEADER="yes"])
557 # ===================================================================
559 # ===================================================================
561 if test "$CONFIG_OS_OS2" = yes; then
565 # ===================================================================
567 # ===================================================================
569 if test "$CONFIG_OS_WIN32" = yes; then
573 # ===================================================================
574 # Check for SpiderMonkey, optional even if installed.
575 # ===================================================================
577 # This option sets the $with_spidermonkey variable.
578 AC_ARG_WITH([spidermonkey],
579 [AS_HELP_STRING([--without-spidermonkey],
580 [disable SpiderMonkey Mozilla JavaScript engine support])])
582 # CONFIG_SPIDERMONKEY is initially blank. We change it to "yes" or "no"
583 # when we know for sure whether we're going to use SpiderMonkey or not.
584 # (features.conf is not supposed to define it.)
588 case "$with_spidermonkey" in
590 # The user specified --without-spidermonkey.
591 # That overrides the other SpiderMonkey options.
592 AC_MSG_CHECKING([for SpiderMonkey])
593 AC_MSG_RESULT([disabled])
594 CONFIG_SPIDERMONKEY="no"
599 AC_MSG_WARN([This version of ELinks does not support --with-spidermonkey=DIRECTORY.])
603 # The SpiderMonkey 1.8.5 standalone sources install mozjs185.pc,
604 # but the Debian libmozjs-dev package installs mozilla-js.pc.
605 # Check mozjs185 first, because it has the version number in the name
606 # and therefore is less likely to be a newer incompatible version.
607 # (This configure script rejects older incompatible versions
608 # but can let newer ones through.)
609 for package in mozjs185 mozilla-js; do
610 if test -n "$CONFIG_SPIDERMONKEY"; then
613 AC_MSG_CHECKING([for SpiderMonkey (1.8.5 or later) in pkg-config $package])
614 # In pkg-config 0.25, pkg-config --exists mozjs185
615 # returns 0 (success) even if mozjs185 depends on
616 # nspr, which has not been installed. However,
617 # pkg-config --cflags mozjs185 returns 1 then.
618 if $PKG_CONFIG --cflags --libs $package > /dev/null 2>&AS_MESSAGE_LOG_FD; then
619 SPIDERMONKEY_LIBS="$($PKG_CONFIG --libs $package)"
620 SPIDERMONKEY_CFLAGS="$($PKG_CONFIG --cflags $package)"
621 LIBS="$SPIDERMONKEY_LIBS $LIBS_X"
622 CFLAGS="$CFLAGS_X $SPIDERMONKEY_CFLAGS"
623 CPPFLAGS="$CPPFLAGS_X $SPIDERMONKEY_CFLAGS"
626 /* mozilla-js.pc may have -DXP_UNIX or similar in Cflags.
627 * Avoid warnings about conflicting definitions. */
628 #if !defined(XP_BEOS) && !defined(XP_OS2) && !defined(XP_UNIX) && !defined(XP_WIN)
633 # error <jsapi.h> did not define JS_VERSION
634 #elif JS_VERSION < 185
637 [CONFIG_SPIDERMONKEY=yes
638 AC_MSG_RESULT([yes])],
639 [# Leave CONFIG_SPIDERMONKEY blank, to continue the search.
640 AC_MSG_RESULT([found but unusable])])
647 if test -z "$CONFIG_SPIDERMONKEY"; then
648 # Didn't find SpiderMonkey anywhere.
649 CONFIG_SPIDERMONKEY=no
652 if test "$CONFIG_SPIDERMONKEY" = "yes"; then
653 # LIBS, CFLAGS, and CPPFLAGS still include the SpiderMonkey options.
654 AC_CHECK_FUNCS([JS_ReportAllocationOverflow])
655 AC_CHECK_FUNCS([JS_SetBranchCallback])
656 AC_CHECK_FUNCS([JS_TriggerOperationCallback], [HAVE_JS_TRIGGEROPERATIONCALLBACK=yes])
657 elif test -n "$with_spidermonkey" && test "x$with_spidermonkey" != "xno"; then
658 AC_MSG_WARN([SpiderMonkey was not found even though you specified --with-spidermonkey.])
662 if test "x$CONFIG_SPIDERMONKEY" = xyes; then
663 EL_CONFIG(CONFIG_ECMASCRIPT_SMJS, [SpiderMonkey document scripting])
665 CONFIG_ECMASCRIPT_SMJS=no
668 EL_CONFIG_DEPENDS(CONFIG_ECMASCRIPT, [CONFIG_ECMASCRIPT_SMJS], [ECMAScript (JavaScript)])
669 AC_SUBST(CONFIG_ECMASCRIPT_SMJS)
671 if test "x$CONFIG_ECMASCRIPT_SMJS" = xyes &&
672 test "x$HAVE_JS_TRIGGEROPERATIONCALLBACK" = xyes &&
673 test "x$HAVE_SETITIMER" = xyes; then
674 EL_CONFIG(CONFIG_ECMASCRIPT_SMJS_HEARTBEAT, [ECMAScript heartbeat support])
676 CONFIG_ECMASCRIPT_SMJS_HEARTBEAT=no
678 AC_SUBST(CONFIG_ECMASCRIPT_SMJS_HEARTBEAT)
681 # ===================================================================
682 # Optional Spidermonkey-based ECMAScript browser scripting
683 # ===================================================================
685 AC_ARG_ENABLE(sm-scripting,
686 [ --disable-sm-scripting ECMAScript browser scripting (requires Spidermonkey)],
687 [if test "$enableval" != no; then enableval="yes"; fi
688 CONFIG_SCRIPTING_SPIDERMONKEY="$enableval";])
690 if test "x$CONFIG_SPIDERMONKEY" = xyes &&
691 test "x$CONFIG_SCRIPTING_SPIDERMONKEY" = xyes; then
692 EL_CONFIG(CONFIG_SCRIPTING_SPIDERMONKEY, [SpiderMonkey])
694 CONFIG_SCRIPTING_SPIDERMONKEY=no
697 if test "x$CONFIG_ECMASCRIPT_SMJS" = xyes ||
698 test "x$CONFIG_SCRIPTING_SPIDERMONKEY" = xyes; then
699 LIBS="$LIBS $SPIDERMONKEY_LIBS"
700 AC_SUBST(SPIDERMONKEY_LIBS)
701 AC_SUBST(SPIDERMONKEY_CFLAGS)
702 AC_SUBST(CONFIG_SPIDERMONKEY)
705 # ===================================================================
706 # Check for Guile, optional even if installed.
707 # ===================================================================
711 AC_ARG_WITH(guile, [ --with-guile enable Guile support],
712 [ if test "x$withval" != xno; then enable_guile=yes; fi ])
714 # The following is probably bad, ugly and so on. Stolen from Guile's (1.4)
715 # GUILE_FLAGS but I really don't want to require people to have Guile in order
716 # to compile CVS. Also, the macro seems to be really stupid regarding searching
717 # for Guile in $PATH etc. --pasky
719 AC_MSG_CHECKING([for Guile])
721 if test "$enable_guile" = "yes"; then
723 ## Based on the GUILE_FLAGS macro.
725 if test -d "$withval"; then
726 GUILE_PATH="$withval:$PATH"
731 AC_PATH_PROG(GUILE_CONFIG, guile-config, no, $GUILE_PATH)
733 ## First, let's just see if we can find Guile at all.
734 if test "$GUILE_CONFIG" != no; then
737 GUILE_LIBS="`guile-config link`"
738 GUILE_CFLAGS="`guile-config compile`"
739 LIBS="$GUILE_LIBS $LIBS"
740 EL_CONFIG(CONFIG_SCRIPTING_GUILE, [Guile])
741 AC_SUBST(GUILE_CFLAGS)
743 ***********************************************************************
744 The Guile support is incomplete and not so well integrated to ELinks
745 yet. That means, e.g., that you have no Guile console and there might
746 not be all the necessary hooks. Also, the Guile interface is not too
747 well tested (success stories heartily welcomed!). See
748 src/scripting/guile/README for further details and hints.
749 ***********************************************************************
752 if test -n "$withval" && test "x$withval" != xno; then
753 AC_MSG_ERROR([Guile not found])
755 AC_MSG_WARN([Guile support disabled])
762 # ===================================================================
764 # ===================================================================
767 AC_ARG_WITH(perl, [ --with-perl enable Perl support],
769 if test "$withval" = yes; then
770 # FIXME: If withval is a valid directory append it to PATH
771 # so that you can specify one of several perl installations.
777 AC_MSG_CHECKING([for Perl])
783 if test "$enable_perl" = "yes"; then
784 PERL_LIBS="`perl -MExtUtils::Embed -e ldopts`"
785 PERL_CFLAGS="`perl -MExtUtils::Embed -e ccopts`"
786 LIBS="$PERL_LIBS $LIBS"
787 CFLAGS="$PERL_CFLAGS $CFLAGS"
788 CPPFLAGS="$CPPFLAGS $PERL_CFLAGS"
789 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
793 ]], [[PerlInterpreter *my_perl = perl_alloc();]])],[cf_result=yes],[cf_result=no])
796 if test "$cf_result"; then AC_MSG_RESULT($cf_result); fi
798 AC_MSG_CHECKING([whether POPpx works without an n_a variable])
799 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
802 extern PerlInterpreter *my_perl;
803 ]], [[dSP; (void) POPpx;]])],[AC_MSG_RESULT([yes])
804 AC_DEFINE([CONFIG_PERL_POPPX_WITHOUT_N_A], [1],
805 [Define if using Perl 5.8.8 or later, where the "POPpx" macro
806 no longer needs an "n_a" variable like it did in 5.8.7])],[AC_MSG_RESULT([no])])
808 if test "$cf_result" != "yes"; then
811 EL_CONFIG(CONFIG_SCRIPTING_PERL, [Perl])
814 CPPFLAGS="$CPPFLAGS_X"
816 AC_SUBST(PERL_CFLAGS)
819 # ===================================================================
821 # ===================================================================
824 AC_ARG_WITH(python, [[ --with-python[=DIR] enable Python support]],
825 [ if test "x$withval" != xno; then enable_python=yes; fi ])
830 AC_MSG_CHECKING([for Python])
832 if test "$enable_python" = "yes"; then
835 if test -d "$withval"; then
836 PYTHON_PATH="$withval:$PATH"
841 AC_PATH_PROG(PYTHON, python, no, $PYTHON_PATH)
843 if test "$PYTHON" != no; then
846 PYTHON_CFLAGS="`$PYTHON -c 'from distutils import sysconfig; print "-I%s -I%s" % (sysconfig.get_python_inc(), sysconfig.get_python_inc(plat_specific=True))'`"
847 PYTHON_LIBS="`$PYTHON -c 'from distutils import sysconfig; var = sysconfig.get_config_var; print "%s %s %s -L%s -lpython%s" % (var("LINKFORSHARED"), var("LIBS"), var("SYSLIBS"), var("LIBPL"), var("VERSION"))'`"
848 LIBS="$PYTHON_LIBS $LIBS"
849 CPPFLAGS="$CPPFLAGS $PYTHON_CFLAGS"
850 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <Python.h>]], [[Py_Initialize();]])],[cf_result=yes],[cf_result=no])
852 if test "$cf_result" != "yes"; then
855 EL_CONFIG(CONFIG_SCRIPTING_PYTHON, [Python])
856 AC_SUBST(PYTHON_LIBS)
857 AC_SUBST(PYTHON_CFLAGS)
858 CPPFLAGS="$CPPFLAGS_X"
860 ***********************************************************************
861 The Python support is incomplete and not so well integrated to ELinks
862 yet. That means, e.g., that you have no Python console and there might
863 not be all the necessary hooks. Also, the Python interface is not too
864 well tested (success stories heartily welcomed!).
865 ***********************************************************************
869 if test -n "$withval" && test "x$withval" != xno; then
870 AC_MSG_ERROR([Python not found])
872 AC_MSG_WARN([Python support disabled])
880 # ===================================================================
881 # Check for Lua, optional even if installed.
882 # ===================================================================
884 # Do this the long way, as FreeBSD reportedly needs -L<dir> for
885 # anything other than /usr/lib, and Lua is very often in /usr/local/lib.
887 AC_ARG_WITH(lua, [ --without-lua disable Lua support],
888 [if test "$withval" = no; then disable_lua=yes; fi])
889 AC_MSG_CHECKING([for Lua])
894 if test -z "$disable_lua"; then
895 if test ! -d "$withval"; then
898 for luadir in "$withval" "" /usr /usr/local; do
899 for suffix in "" 5.1 51; do
900 if test "$cf_result" = no && ( test -f "$luadir/include/lua.h" || \
901 test -f "$luadir/include/lua$suffix/lua.h" ) ; then
902 LUA_LIBS="-L$luadir/lib -llua$suffix -lm"
903 LUA_CFLAGS="-I$luadir/include -I$luadir/include/lua$suffix"
905 LIBS="$LUA_LIBS $LIBS_X"
906 CFLAGS="$CFLAGS_X $LUA_CFLAGS"
907 CPPFLAGS="$CPPFLAGS_X $LUA_CFLAGS"
909 # Check that it is a compatible Lua version
910 AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <lauxlib.h>]
913 ], [[ lua_State *L = luaL_newstate();
915 lua_pushboolean(L, 1);
916 lua_close(L);]])],[cf_result=yes],[cf_result=no])
922 AC_MSG_RESULT($cf_result)
924 if test "$cf_result" != yes; then
927 EL_CONFIG(CONFIG_SCRIPTING_LUA, [Lua])
928 AC_CHECK_HEADERS(lauxlib.h)
931 CPPFLAGS="$CPPFLAGS_X"
936 # ===================================================================
937 # Check for TRE library
938 # ===================================================================
940 # This section only checks that --without-tre is not given and the
941 # library seems to work, and sets TRE_CFLAGS, TRE_LIBS, and
942 # tre_log. It does not define CONFIG_TRE, and always resets
943 # LIBS and CFLAGS back to their original values.
945 # After any --enable-utf-8 and --disable-utf-8 options have been
946 # handled, a separate section decides whether to actually use TRE.
948 # tre version 0.8.0 or higher is required which have the "tre_" prefix
951 AC_ARG_WITH([[tre]], [[ --without-tre disable TRE regex search support]])
952 if test "$with_tre" = no; then
953 AC_MSG_CHECKING([[for TRE]])
954 AC_MSG_RESULT([[disabled]])
955 tre_log="no (explicitly disabled)"
957 AC_MSG_CHECKING([[for TRE in pkg-config]])
958 if $PKG_CONFIG tre; then
959 TRE_CFLAGS=`$PKG_CONFIG --cflags tre`
960 TRE_LIBS=`$PKG_CONFIG --libs tre`
961 AC_MSG_RESULT([[yes]])
963 # <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513055>
964 # "libtre-dev: /usr/lib/pkgconfig/tre.pc missing"
965 # so we look for the library even if pkg-config doesn't know about it.
968 AC_MSG_RESULT([[no, but let's try defaults]])
971 AC_MSG_CHECKING([[for TRE header and library]])
973 CFLAGS="$TRE_CFLAGS $CFLAGS"
974 LIBS="$TRE_LIBS $LIBS" # must be first, because of regfree conflict
975 AC_TRY_LINK([#include <tre/tre.h>],
978 tre_regwcomp(&re, L"zap", REG_ICASE);
979 tre_regwexec(&re, L"ELIZAPROGRAM", 1, match, 0);],
980 [AC_MSG_RESULT([[yes]])
981 tre_log="available"],
982 [AC_MSG_RESULT([[no]])
983 tre_log="no (TRE not found)"])
987 # ===================================================================
988 # Check for Ruby, optional even if installed.
989 # ===================================================================
991 EL_CONFIG_SCRIPTING_RUBY
993 # ===================================================================
994 # Setup global scripting
995 # ===================================================================
997 EL_CONFIG_DEPENDS(CONFIG_SCRIPTING, [CONFIG_SCRIPTING_GUILE CONFIG_SCRIPTING_LUA CONFIG_SCRIPTING_PERL CONFIG_SCRIPTING_PYTHON CONFIG_SCRIPTING_RUBY CONFIG_SCRIPTING_SPIDERMONKEY], [Browser scripting])
998 AC_SUBST(CONFIG_SCRIPTING_GUILE)
999 AC_SUBST(CONFIG_SCRIPTING_LUA)
1000 AC_SUBST(CONFIG_SCRIPTING_PERL)
1001 AC_SUBST(CONFIG_SCRIPTING_PYTHON)
1002 AC_SUBST(CONFIG_SCRIPTING_RUBY)
1003 AC_SUBST(CONFIG_SCRIPTING_SPIDERMONKEY)
1004 AC_SUBST(CONFIG_SCRIPTING)
1007 # ===================================================================
1008 # Check for SSL support.
1009 # ===================================================================
1011 # We by default use OpenSSL, and we always prefer it. However, when GNUTLS
1012 # is enabled, we won't try to use OpenSSL anymore.
1014 # For wiping SSL hooks..
1017 chosen_ssl_library=""
1019 AC_ARG_WITH(gnutls, [[ --without-gnutls disable GNUTLS SSL support]])
1020 AC_ARG_WITH(gnutls, [[ --with-gnutls enable GNUTLS SSL support]],
1021 [case "$with_gnutls" in
1023 "yes") chosen_ssl_library="GNUTLS" ;;
1024 *) chosen_ssl_library="GNUTLS"
1025 AC_MSG_WARN([[Support for --with-gnutls=DIR has been removed.
1026 You may have to set the PKG_CONFIG_PATH environment variable instead.]]) ;;
1029 AC_ARG_WITH(openssl, [[ --without-openssl disable OpenSSL support]])
1030 AC_ARG_WITH(openssl, [[ --with-openssl[=DIR] enable OpenSSL support (default)]],
1031 [case "$with_openssl" in
1033 *) chosen_ssl_library="OpenSSL" ;;
1036 AC_ARG_WITH(nss_compat_ossl, [[ --with-nss_compat_ossl[=DIR]
1037 NSS compatibility SSL libraries/include files]],
1038 [case "$with_nss_compat_ossl" in
1040 *) chosen_ssl_library="nss_compat_ossl" ;;
1043 # ---- nss_compat_ossl
1045 if test "$with_nss_compat_ossl" = no; then
1046 # explicitly disabled
1048 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "nss_compat_ossl"; then
1049 # not used, because $chosen_ssl_library was chosen
1051 elif test -z "${with_nss_compat_ossl+set}"; then
1052 # SSL_library_init() in nss_compat_ossl 0.9.2 calls exit(1)
1053 # with no error message if there is no certificate database.
1054 # https://bugzilla.redhat.com/show_bug.cgi?id=463437
1055 # So ELinks uses nss_compat_ossl only if explicitly requested.
1059 if test "$with_nss_compat_ossl" = yes; then
1060 if $PKG_CONFIG nss; then
1061 CFLAGS="$CFLAGS_X `$PKG_CONFIG --cflags nss`"
1062 LIBS="$LIBS_X `$PKG_CONFIG --libs nss`"
1064 with_nss_compat_ossl=no
1067 # Without pkg-config, we'll kludge in some defaults
1068 CFLAGS="$CFLAGS_X -I$with_nss_compat_ossl/include -I/usr/include/nss3 -I/usr/include/nspr4"
1069 LIBS="$LIBS_X -L$with_nss_compat_ossl/lib -lssl3 -lsmime3 -lnss3 -lplds4 -lplc4 -lnspr4 -lpthread -ldl"
1071 AC_CHECK_HEADERS(nss_compat_ossl/nss_compat_ossl.h,, [with_nss_compat_ossl=no], [#define NSS_COMPAT_OSSL_H])
1072 AC_CHECK_LIB(nss_compat_ossl, X509_free,, [with_nss_compat_ossl=no])
1074 if test "$with_nss_compat_ossl" = "no"; then
1077 LIBS="$LIBS -lnss_compat_ossl"
1078 EL_CONFIG(CONFIG_NSS_COMPAT_OSSL, [nss_compat_ossl])
1079 chosen_ssl_library="nss_compat_ossl"
1085 AC_MSG_CHECKING([for OpenSSL])
1089 if test "$with_openssl" = no; then
1090 cf_result="explicitly disabled"
1092 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "OpenSSL"; then
1093 cf_result="not used, because $chosen_ssl_library was chosen"
1097 for ssldir in "$with_openssl" "" /usr /usr/local/openssl \
1098 /usr/lib/openssl /usr/local/ssl \
1099 /usr/local/www /usr/lib/ssl /usr/local \
1100 /usr/pkg /opt /opt/openssl; do
1101 if test "$cf_result" = no; then
1102 if test -d "$ssldir"; then
1103 OPENSSL_CFLAGS="-I$ssldir/include"
1104 LIBS="-L$ssldir/lib -lssl -lcrypto $LIBS_X"
1105 CFLAGS="$CFLAGS_X $OPENSSL_CFLAGS"
1106 CPPFLAGS="$CPPFLAGS_X $OPENSSL_CFLAGS"
1107 # # FIXME: This created serious portability problems. --pasky
1108 # if test "$CC" == "gcc"; then
1109 # # I'm not sure about compatibility here. --pasky
1110 # LIBS="$LIBS -R$ssldir/lib"
1113 LIBS="-lssl -lcrypto $LIBS_X"
1115 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <openssl/ssl.h>]], [[OpenSSL_add_all_algorithms()]])],[cf_result=yes],[cf_result=no])
1116 if test "$cf_result" != yes; then
1117 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <openssl/ssl.h>]], [[SSLeay_add_ssl_algorithms()]])],[cf_result=yes],[cf_result=no])
1122 if test "$cf_result" != yes; then
1123 if test "${with_openssl-no}" != "no"; then
1124 AC_MSG_ERROR([OpenSSL not found])
1128 EL_CONFIG(CONFIG_OPENSSL, [OpenSSL])
1129 chosen_ssl_library="OpenSSL"
1132 AC_SUBST(OPENSSL_CFLAGS)
1136 AC_MSG_RESULT($cf_result)
1140 # GnuTLS 2.2.0 changed libgnutls-openssl from GPLv2+
1141 # to GPLv3+. Don't link that with the GPLv2 ELinks.
1142 # ELinks will use its internal MD5 code instead.
1143 CONFIG_GNUTLS_OPENSSL_COMPAT=no
1145 if test "$with_gnutls" = no; then
1146 AC_MSG_CHECKING([[for GNUTLS]])
1147 AC_MSG_RESULT([[explicitly disabled]])
1149 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "GNUTLS"; then
1150 AC_MSG_CHECKING([[for GNUTLS]])
1151 AC_MSG_RESULT([[not used, because $chosen_ssl_library was chosen]])
1155 AC_MSG_CHECKING([[for GNUTLS (1.2 or later) in pkg-config]])
1156 if $PKG_CONFIG --atleast-version=1.2 gnutls; then
1157 GNUTLS_CFLAGS=`$PKG_CONFIG --cflags gnutls`
1158 GNUTLS_LIBS=`$PKG_CONFIG --libs gnutls`
1159 AC_MSG_RESULT([[yes: $GNUTLS_CFLAGS $GNUTLS_LIBS]])
1162 LIBS="$GNUTLS_LIBS $LIBS"
1163 CFLAGS="$CFLAGS $GNUTLS_CFLAGS"
1164 CPPFLAGS="$CPPFLAGS $GNUTLS_CFLAGS"
1166 # Verify if it's really usable. gnutls_session was
1167 # renamed to gnutls_session_t before GNU TLS 1.2.0
1168 # (on 2004-06-13); ELinks now requires this.
1169 AC_MSG_CHECKING([[whether GNUTLS can be linked with]])
1170 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <gnutls/gnutls.h>]],
1171 [[gnutls_session_t dummy;
1172 gnutls_check_version(NULL)]])],
1175 AC_MSG_RESULT([[$cf_result]])
1177 if test "$cf_result" = yes; then
1178 # According to gnutls/NEWS, the function was originally
1179 # added as gnutls_set_default_priority2 in GNUTLS 2.1.4
1180 # (released 2007-10-27) and then renamed to
1181 # gnutls_priority_set_direct in GNUTLS 2.1.7 (released
1183 AC_CHECK_FUNCS([gnutls_priority_set_direct])
1188 AC_MSG_RESULT([[$cf_result]])
1191 if test "$cf_result" = yes; then
1192 EL_CONFIG(CONFIG_GNUTLS, [GNUTLS])
1193 chosen_ssl_library="GNUTLS"
1195 # gcry_create_nounce is part of libgcrypt
1196 LIBGCRYPT_CFLAGS=`libgcrypt-config --cflags`
1197 LIBGCRYPT_LIBS=`libgcrypt-config --libs`
1199 LIBS="$LIBGCRYPT_LIBS $GNUTLS_LIBS $LIBS"
1200 AC_SUBST(LIBGCRYPT_CFLAGS)
1201 AC_SUBST(GNUTLS_CFLAGS)
1203 elif test "${with_gnutls-no}" != "no"; then
1204 AC_MSG_ERROR([[GNUTLS (1.2 or later) not found. ELinks no longer supports GNUTLS 1.1.]])
1210 EL_CONFIG_DEPENDS(CONFIG_SSL, [CONFIG_OPENSSL CONFIG_GNUTLS CONFIG_NSS_COMPAT_OSSL], [SSL])
1211 AC_SUBST(CONFIG_GNUTLS_OPENSSL_COMPAT)
1212 AC_SUBST(CONFIG_OPENSSL)
1213 AC_SUBST(CONFIG_GNUTLS)
1214 AC_SUBST(CONFIG_NSS_COMPAT_OSSL)
1218 AC_MSG_CHECKING([whether to be or not to be])
1219 AC_MSG_RESULT([needs to be determined experimentally])
1221 # ===================================================================
1222 # Check for IPv6 support and related functions.
1223 # ===================================================================
1225 EL_CHECK_NET_TYPE(struct sockaddr_storage, HAVE_SA_STORAGE, [])
1226 EL_CHECK_NET_TYPE(struct sockaddr_in6, HAVE_SA_IN6, [#include <netinet/in.h>])
1227 EL_CHECK_NET_TYPE(struct addrinfo, HAVE_ADDRINFO, [#include <netdb.h>])
1229 AC_CHECK_FUNC(getaddrinfo, HAVE_GETADDRINFO=yes, HAVE_GETADDRINFO=no)
1230 if test "$HAVE_GETADDRINFO" != yes; then
1231 AC_CHECK_LIB(inet6, getaddrinfo, HAVE_GETADDRINFO=yes, HAVE_GETADDRINFO=no)
1232 if test "$HAVE_GETADDRINFO" = yes; then
1233 LIBS="$LIBS -linet6"
1238 # ===================================================================
1239 # Checking for X11 (window title restoring).
1240 # ===================================================================
1243 if test x"$no_x" != xyes; then
1245 if test -n "$x_includes"; then
1246 X_CFLAGS="-I$x_includes"
1247 CPPFLAGS="$CPPLAGS $X_CFLAGS"
1248 CFLAGS="$CFLAGS $X_CFLAGS"
1250 if test -n "$x_libraries"; then
1251 LDFLAGS="$LDFLAGS -L$x_libraries"
1254 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]], [[XrmInitialize()]])],[cf_result=yes],[cf_result=no])
1256 if test "$cf_result" = yes; then
1257 if test -n "$x_libraries"; then
1258 LDFLAGS="$LDFLAGS -L$x_libraries"
1261 EL_DEFINE(HAVE_X11, [X11 for restoring window titles])
1267 # ===================================================================
1268 # Backtraces displaying support.
1269 # ===================================================================
1271 AC_CHECK_HEADERS(execinfo.h, HAVE_EXECINFO=yes, HAVE_EXECINFO=no)
1272 # possible checks for other system-specific means go here
1275 # ===================================================================
1276 # Gettext grey zone. Beware.
1277 # ===================================================================
1279 ALL_LINGUAS="af be bg ca cs da de el es et fi fr gl hr hu id is it lt nl nb pl pt pt_BR ro ru sk sr sv tr uk"
1283 # iconv is always used
1284 LIBS="$LIBS $LIBICONV"
1286 dnl AC_MSG_CHECKING([how many characters your English alphabet has])
1287 dnl # f33r d4 l33t... I hope it's portable. :)
1288 dnl cf_result=$((48#z - 48#a + 1));
1289 dnl AC_MSG_RESULT($cf_result)
1292 # ===================================================================
1293 # Compile-time features control
1294 # ===================================================================
1296 EL_ARG_ENABLE(CONFIG_COOKIES, cookies, [Cookies],
1297 [ --disable-cookies disable cookie support])
1299 EL_ARG_ENABLE(CONFIG_FORMHIST, formhist, [Form history],
1300 [ --disable-formhist disable form history support])
1302 EL_ARG_ENABLE(CONFIG_GLOBHIST, globhist, [Global history],
1303 [ --disable-globhist disable global history support])
1306 EL_ARG_ENABLE(CONFIG_MAILCAP, mailcap, [Mailcap],
1307 [ --disable-mailcap disable mailcap support])
1309 EL_ARG_ENABLE(CONFIG_MIMETYPES, mimetypes, [Mimetypes files],
1310 [ --disable-mimetypes disable mimetypes files support])
1313 EL_ARG_DEPEND(CONFIG_IPV6, ipv6,
1314 [HAVE_SA_STORAGE:yes HAVE_SA_IN6:yes HAVE_ADDRINFO:yes HAVE_GETADDRINFO:yes],
1316 [ --disable-ipv6 disable IPv6 support])
1318 EL_ARG_ENABLE(CONFIG_BITTORRENT, bittorrent, [BitTorrent protocol],
1319 [ --enable-bittorrent enable BitTorrent protocol support])
1321 EL_ARG_ENABLE(CONFIG_DATA, data, [Data protocol],
1322 [ --disable-data disable data protocol support])
1324 EL_ARG_ENABLE(CONFIG_URI_REWRITE, uri-rewrite, [URI rewriting],
1325 [ --disable-uri-rewrite disable URI rewrite support])
1327 EL_ARG_DEPEND(CONFIG_CGI, cgi, [HAVE_SETENV_OR_PUTENV:yes], [Local CGI],
1328 [ --enable-cgi enable local CGI support])
1330 EL_ARG_ENABLE(CONFIG_FINGER, finger, [Finger protocol],
1331 [ --enable-finger enable finger protocol support])
1333 # ===================================================================
1335 # ===================================================================
1338 if test "x${enable_fsp}" != xno; then
1339 AC_CHECK_HEADERS(fsplib.h, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1341 if test "$HAVE_FSPLIB" = yes; then
1342 AC_CHECK_LIB(fsplib, fsp_open_session, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1343 if test "$HAVE_FSPLIB" = yes; then
1344 LIBS="$LIBS -lfsplib"
1346 AC_CHECK_LIB(fsp, fsp_open_session, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1347 if test "$HAVE_FSPLIB" = yes; then
1354 EL_ARG_DEPEND(CONFIG_FSP, fsp, [HAVE_FSPLIB:yes], [FSP protocol],
1355 [ --enable-fsp enable FSP protocol support])
1357 if test "x$CONFIG_FSP" = xno; then
1361 EL_ARG_ENABLE(CONFIG_FTP, ftp, [FTP protocol],
1362 [ --disable-ftp disable ftp protocol support])
1364 EL_ARG_ENABLE(CONFIG_GOPHER, gopher, [Gopher protocol],
1365 [ --enable-gopher enable gopher protocol support])
1367 EL_ARG_ENABLE(CONFIG_NNTP, nntp, [NNTP protocol],
1368 [ --enable-nntp enable nntp protocol support])
1370 # ===================================================================
1371 # SMB protocol support.
1372 # ===================================================================
1375 if test "x${enable_smb}" != xno; then
1376 AC_CHECK_HEADERS(libsmbclient.h, HAVE_SMBCLIENT=yes, HAVE_SMBCLIENT=no)
1378 if test "$HAVE_SMBCLIENT" = yes; then
1379 AC_CHECK_LIB(smbclient, smbc_init, HAVE_SMBCLIENT=yes, HAVE_SMBCLIENT=no)
1380 if test "$HAVE_SMBCLIENT" = yes; then
1381 LIBS="$LIBS -lsmbclient"
1386 EL_ARG_DEPEND(CONFIG_SMB, smb, [HAVE_SMBCLIENT:yes], [Samba protocol],
1387 [ --enable-smb enable Samba protocol support])
1389 if test "x$CONFIG_SMB" = xno; then
1394 EL_ARG_ENABLE(CONFIG_MOUSE, mouse, [Mouse handling],
1395 [ --disable-mouse disable mouse support])
1397 # GPM mouse is Linux specific, so ...
1399 EL_ARG_DEPEND(CONFIG_SYSMOUSE, sysmouse,
1400 [CONFIG_MOUSE:yes CONFIG_GPM:no HAVE_SYSMOUSE_HEADER:yes],
1402 [ --disable-sysmouse disable BSD sysmouse support])
1404 EL_ARG_ENABLE(CONFIG_88_COLORS, 88-colors, [88 colors],
1405 [ --enable-88-colors enable 88 color support])
1407 EL_ARG_ENABLE(CONFIG_256_COLORS, 256-colors, [256 colors],
1408 [ --enable-256-colors enable 256 color support])
1410 EL_ARG_ENABLE(CONFIG_TRUE_COLOR, true-color, [true color],
1411 [ --enable-true-color enable true color support])
1413 EL_ARG_ENABLE(CONFIG_EXMODE, exmode, [Exmode interface],
1414 [ --enable-exmode enable exmode (CLI) interface])
1416 EL_ARG_ENABLE(CONFIG_LEDS, leds, [LEDs],
1417 [ --disable-leds disable LEDs support])
1419 EL_ARG_ENABLE(CONFIG_MARKS, marks, [Marks],
1420 [ --disable-marks disable document marks support])
1423 EL_ARG_ENABLE(CONFIG_CSS, css, [Cascading Style Sheets],
1424 [ --disable-css disable Cascading Style Sheet support])
1426 EL_ARG_DEPEND(CONFIG_HTML_HIGHLIGHT, html-highlight, [CONFIG_CSS:yes], [HTML highlighting],
1427 [ --enable-html-highlight HTML highlighting using DOM engine])
1429 # Everything in the tree already uses CONFIG_DOM
1430 # so resolve CONFIG_HTML_HIGHLIGHT to CONFIG_DOM
1431 EL_CONFIG_DEPENDS(CONFIG_DOM, [CONFIG_HTML_HIGHLIGHT], [DOM engine])
1433 EL_ARG_DEPEND(CONFIG_BACKTRACE, backtrace, [HAVE_EXECINFO:yes], [Backtrace],
1434 [ --disable-backtrace disable backtrace support])
1436 EL_ARG_DEPEND(CONFIG_NO_ROOT_EXEC, no-root, [HAVE_GETUID:yes HAVE_GETEUID:yes], [No root exec],
1437 [ --enable-no-root enable prevention of usage by root])
1440 EL_ARG_ENABLE(CONFIG_DEBUG, debug, [Debug mode],
1441 [ --enable-debug enable leak debug and internal error checking])
1443 EL_ARG_DEPEND(CONFIG_FASTMEM, fastmem, [CONFIG_DEBUG:no], [Fast mode],
1444 [ --enable-fastmem enable direct use of system allocation functions, not usable with --enable-debug])
1446 EL_ARG_ENABLE(CONFIG_OWN_LIBC, own-libc, [Own libc stubs],
1447 [ --enable-own-libc force use of internal functions instead of those of system libc])
1449 EL_ARG_ENABLE(CONFIG_SMALL, small, [Small binary],
1450 [ --enable-small reduce binary size as far as possible (but see the bottom of doc/small.txt!)])
1452 EL_ARG_ENABLE(CONFIG_UTF8, utf-8, [UTF-8],
1453 [ --disable-utf-8 disable UTF-8 support])
1455 EL_ARG_DEPEND(CONFIG_COMBINE, combining, [CONFIG_UTF8:yes HAVE_WCWIDTH:yes], [Combining characters],
1456 [ --enable-combining support Unicode combining characters (experimental)])
1459 AC_ARG_ENABLE(weehoofooboomookerchoo,
1461 Also check out the features.conf file for more information about features!
1463 [AC_MSG_ERROR(Are you strange, or what?)])
1466 # ===================================================================
1467 # Decide whether to use TRE
1468 # ===================================================================
1470 # This must be done after the CONFIG_UTF8 check above.
1471 # The first part of the TRE check is separate, to get
1472 # the configure --help output in a sensible order.
1474 # After this section, nothing else must be added to the
1475 # beginning of $LIBS.
1477 if test "$tre_log" = "available"; then
1478 if test "$CONFIG_UTF8" = "yes"; then
1479 # When CONFIG_UTF8 and CONFIG_TRE are both defined,
1480 # src/viewer/text/search.c makes a string of
1481 # unicode_val_T and gives it to regwexec(), which
1482 # expects a string of wchar_t. If the unicode_val_T
1483 # and wchar_t types are too different, this won't
1484 # work, so try to detect that and disable regexp
1485 # operations entirely in that case.
1487 # Currently, this code only compares the sizes of the
1488 # types. src/intl/charsets.h defines unicode_val_T as
1489 # uint32_t, so we check whether wchar_t has exactly 32
1490 # bits. But don't use AC_CHECK_SIZEOF for this, because
1491 # there doesn't seem to be a documented way to get the
1492 # result of that for use in the configure script.
1494 # C99 says the implementation can define
1495 # __STDC_ISO_10646__ if wchar_t values match ISO 10646
1496 # (or Unicode) numbers in all locales. Do not check
1497 # that macro here, because it is too restrictive: it
1498 # should be enough for ELinks if the values match in
1499 # the locales where ELinks is actually run.
1500 AC_MSG_CHECKING([[whether wchar_t is exactly 32-bit]])
1501 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1504 int dummy[(sizeof(wchar_t) * CHAR_BIT == 32) ? 1 : -1];]], [])],
1505 [AC_MSG_RESULT([[yes]])
1507 [AC_MSG_RESULT([[no]])
1508 tre_log="no (unsuitable wchar_t)"])
1510 # If UTF-8 is not used, then wchar_t doesn't matter.
1515 if test "$tre_log" = "TRE"; then
1516 AC_DEFINE([CONFIG_TRE], [1],
1517 [Define as 1 to use the TRE library for regular expression searching. This requires the <tre/regex.h> header file. If you define CONFIG_UTF8 too, then wchar_t must be exactly 32-bit so that it matches unicode_val_T.])
1518 # TRE_CFLAGS will be used only where needed.
1520 # Bug 1081: If both TRE and libc define the regfree function,
1521 # ELinks needs to use the version defined by TRE because
1522 # that's the one compatible with regex_t initialized by the
1523 # regwcomp function of TRE. Therefore put $TRE_LIBS at the
1524 # very beginning of $LIBS so that the linker hopefully finds
1525 # regfree there before it examines libc. In particular,
1526 # $PERL_LIBS appears to often include "-lc".
1528 # This scheme still risks a crash if ELinks is linked with
1529 # some static library that uses GNU <regex.h> extensions that
1530 # TRE does not implement. For example, the library might call
1531 # re_compile_pattern, which is found in GNU libc, and then
1532 # regfree, which is found in TRE and probably crashes with the
1533 # GNU-initialized regex_t. Ways to avoid such crashes:
1535 # - Change TRE so it defines only tre_... functions and does
1536 # not attempt to override the POSIX names by default.
1538 # - Change ELinks to access TRE only via dlopen and dlsym.
1539 # The problem then is how to find the correct file name.
1540 # There might be libtre.so.4 and libtre.so.5 with different
1541 # ABI. How can this configure script detect which of them
1542 # matches the <tre/regex.h> in the include path?
1544 # - Replace the static library with a shared library. At
1545 # least on GNU/Linux, when the shared library is built, the
1546 # linker should note that e.g. regfree is defined in libc
1547 # and has the GLIBC_2.0 version there, and write that
1548 # version string to the shared library as well; because TRE
1549 # does not provide regfree with that version, any regfree
1550 # calls at run time should then get resolved to libc.
1551 LIBS="$TRE_LIBS $LIBS"
1556 AC_SUBST(TRE_CFLAGS)
1558 EL_LOG_CONFIG([CONFIG_TRE], [[Regexp searching]], [[$tre_log]])
1561 # ===================================================================
1562 # Further LDFLAGS tweaks
1563 # ===================================================================
1567 test "$CONFIG_OS_OS2" = yes && LDFLAGS="$LDFLAGS -Zexe"
1568 test "$CONFIG_OS_OS2" = yes && LDFLAGS=`echo "$LDFLAGS" | sed "s/-Zbin-files//g"`
1571 # Check for -rdynamic
1573 # gcc -rdynamic calls ld -export-dynamic, which adds all symbols of
1574 # the executable to its dynamic symbol table. ELinks uses this for
1577 # 1. If ELinks detects a bug, it can try to display a backtrace by
1578 # calling backtrace_symbols_fd() in the GNU libc. The glibc-2.3.6
1579 # manual states users of GNU ld must pass -rdynamic to make the
1580 # symbols available to the program.
1582 # 2. It would eventually be nice to dynamically load shared
1583 # libraries as plugins (bug 73). The plugins must be able to
1584 # call ELinks functions. This can be implemented either by
1585 # registering all callable functions in ELinks-specific data
1586 # structures, or by letting the dynamic linker handle them.
1587 # The latter way requires something equivalent to -rdynamic.
1589 # Because backtraces are not needed for correct operation, and bug
1590 # 73 is not yet being fixed, the configure script and makefiles
1591 # should not complain to the user if they find that -rdynamic does
1592 # not work. Besides, it was reported at elinks-users on 2006-09-12
1593 # that gcc-3.4.2 with "ld: Software Generation Utilities - Solaris
1594 # Link Editors: 5.8-1.284" on Sun Solaris 8 Sparc does not support
1595 # -rdynamic but does something equivalent automatically. (This was
1596 # tested with "nm -D elinks | grep redraw_from_window".)
1598 # With Sun Studio 11 on Solaris 9, we get "cc: Warning: illegal option
1599 # -dynamic"; then, cc proceeds anyway, but the option can prevent the
1600 # linker from finding the libraries listed in -l operands. So this
1601 # -rdynamic check needs to happen after the libraries have already
1602 # been added to $LDFLAGS.
1603 AC_MSG_CHECKING([for -rdynamic])
1604 LDFLAGS_X="$LDFLAGS"
1605 LDFLAGS="-rdynamic $LDFLAGS"
1606 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[have_rdynamic=yes],[have_rdynamic=no])
1607 test "$have_rdynamic" = no && LDFLAGS="$LDFLAGS_X"
1608 AC_MSG_RESULT($have_rdynamic)
1610 # ===================================================================
1611 # Export directory paths
1612 # ===================================================================
1614 # Set up the ``entry points'' if they were not supplied by builder
1615 test "x$prefix" = xNONE && prefix=$ac_default_prefix
1616 test "x$exec_prefix" = xNONE && exec_prefix=${prefix}
1618 # Create CONFDIR #define for config.h
1620 # XXX: This may be dependent on a particular version of autoconf. Whatever,
1621 # it's autoconf fault to force us to do such hacks ;p.
1622 if test x"$sysconfdir" = x"\${prefix}/etc"; then
1623 # sysconfdir is set to its default value... fine, let's append /elinks/
1624 # XXX: We can't modify listing of the default in ./configure --help :-(
1625 sysconfdir_n=`eval echo "$sysconfdir"`
1626 sysconfdir=$sysconfdir_n
1627 (echo "$sysconfdir" | grep elinks >/dev/null 2>/dev/null) || \
1628 sysconfdir="$sysconfdir/elinks"
1632 AC_DEFINE_UNQUOTED(CONFDIR, "$CONFDIR", [Directory containing default config])
1635 # Create LOCALEDIR #define for config.h
1636 LOCALEDIR=`eval echo "$datadir/locale"`
1637 while echo "$LOCALEDIR" | grep "\\$"
1639 LOCALEDIR=`eval echo "$LOCALEDIR"`
1640 done > /dev/null 2> /dev/null
1641 AC_DEFINE_UNQUOTED(LOCALEDIR, "$LOCALEDIR", [Directory containing locales])
1644 # Create LIBDIR #define for config.h
1645 LIBDIR=`eval echo "$libdir"`
1646 AC_DEFINE_UNQUOTED(LIBDIR, "$LIBDIR", [Directory containing libraries])
1649 EL_LOG_CONFIG(CONFDIR, [System configuration directory], [])
1650 EL_LOG_CONFIG(LOCALEDIR, [Locale catalogs directory], [])
1653 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
1654 ]], [[#if !defined(__TINYC__) || !defined(alloca)
1656 #endif ]])],[cf_result=yes],[cf_result=no])
1658 if test "$cf_result" = "yes"; then
1659 AC_DEFINE([HAVE_ALLOCA])
1660 AC_DEFINE([_ALLOCA_H], [1], [Define as 1 if you are using Tiny C Compiler
1661 with the GNU C Library, and <alloca.h> of glibc would otherwise
1662 override the alloca macro defined in <stddef.h> of TCC.
1663 If <alloca.h> of glibc sees the _ALLOCA_H macro, it assumes
1664 it has already been included, and does not redefine alloca.
1665 This might not work in future glibc versions though, because
1666 the names of the #include guard macros are not documented.
1667 The incompatibility has been reported to the tinycc-devel
1668 mailing list on 2008-07-14. If a future version of TCC provides
1669 an <alloca.h> of its own, this hack won't be needed.])
1671 # ===================================================================
1672 # A little fine tuning of gcc specific options (continued)
1673 # ===================================================================
1676 if test "x$ac_cv_c_compiler_gnu" = "xyes"; then
1677 if test "$CONFIG_DEBUG" = "yes"; then
1678 # We want to see all warnings and live with none (in debug mode).
1679 CFLAGS="$CFLAGS -Werror"
1681 GETTEXT_CFLAGS="-Wno-uninitialized"
1683 case "`$CC -dumpversion`" in
1685 # These should be ok using -Werror
1688 # If gcc is version 3.3 (or higher?) it emits lots of false positive
1689 # "dereferencing type-punned pointer will break strict-aliasing rules"
1690 # warnings. Disable them by not doing any strict-aliasing. The
1691 # alternative is just too ugly. Thanks gcc guys!! ;)
1692 CFLAGS="$CFLAGS -fno-strict-aliasing"
1695 CFLAGS="$CFLAGS -fno-strict-aliasing -Wno-pointer-sign -Wno-enum-compare"
1698 # Do not show warnings related to (char * | unsigned char *) type
1700 CFLAGS="$CFLAGS -fno-strict-aliasing -Wno-pointer-sign"
1703 # These should be ok using -Werror
1707 # GCC 4.2.1 warns if we use the address of an object in Boolean context:
1708 # warning: the address of `builtin_modules' will always evaluate as `true'
1709 # This hits the object_lock and foreach_module macros in particular.
1710 # It would be okay to put something in the macros to avoid the warning,
1711 # but currently this seems to require defining parallel macros that skip
1712 # the NULL check, and that's too ugly. So we instead disable the warning.
1713 # GCC 4.2.1 needs -Wno-address, but GCC 4.2 snapshots need -Wno-always-true.
1714 # GCC 4.1.3 recognizes neither and exits with code 1 if they are given.
1715 for warning_flag in -Wno-address -Wno-always-true; do
1716 AC_MSG_CHECKING([whether $CC accepts $warning_flag])
1718 CFLAGS="$CFLAGS $warning_flag"
1719 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1720 [AC_MSG_RESULT([yes])
1722 [AC_MSG_RESULT([no])])
1726 # Bug 1012: Some parts of ELinks do arithmetic with signed integers
1727 # in such a way that an overflow is possible. GCC 4.2.1 warns
1728 # "warning: assuming signed overflow does not occur when assuming
1729 # that (X + c) > X is always true", which may be an incorrect
1730 # optimization (although allowed by the standard), and breaks the
1731 # build with -Werror.
1733 # All of the following tests included -S -Wall -Wextra:
1735 # GCC: (GNU) 4.0.4 20060507 (prerelease) (Debian 4.0.3-3)
1736 # * gcc-4.0 -O0: OK, compares the values
1737 # * gcc-4.0 -O2: assumes no overflow, does not warn
1738 # * gcc-4.0 -O0 -fno-strict-overflow: unrecognized command line option
1739 # * gcc-4.0 -O0 -fwrapv: OK, compares the values
1740 # * gcc-4.0 -O2 -fwrapv: OK, compares the values
1741 # * gcc-4.0 -O0 -ftrapv: OK, calls __addvsi3
1742 # * gcc-4.0 -O2 -ftrapv: assumes no overflow, does not warn
1743 # * gcc-4.0 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1744 # * gcc-4.0 -O2 -fwrapv -ftrapv: compares the values
1746 # GCC: (GNU) 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)
1747 # * gcc-4.1 -O0: assumes no overflow, does not warn
1748 # * gcc-4.1 -O2: assumes no overflow, does not warn
1749 # * gcc-4.1 -O0 -fno-strict-overflow: unrecognized command line option
1750 # * gcc-4.1 -O0 -fwrapv: OK, compares the values
1751 # * gcc-4.1 -O2 -fwrapv: OK, compares the values
1752 # * gcc-4.1 -O0 -ftrapv: OK, calls __addvsi3
1753 # * gcc-4.1 -O2 -ftrapv: compares the values
1754 # * gcc-4.1 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1755 # * gcc-4.1 -O2 -fwrapv -ftrapv: compares the values
1757 # GCC: (GNU) 4.2.1 (Debian 4.2.1-5)
1758 # * gcc-4.2 -O0: OK, compares the values
1759 # * gcc-4.2 -O2: assumes no overflow, warns about it
1760 # * gcc-4.2 -O0 -fno-strict-overflow: OK, compares the values
1761 # * gcc-4.2 -O2 -fno-strict-overflow: OK, compares the values
1762 # * gcc-4.2 -O0 -fwrapv: OK, compares the values
1763 # * gcc-4.2 -O2 -fwrapv: OK, compares the values
1764 # * gcc-4.2 -O0 -ftrapv: OK, calls __addvsi3
1765 # * gcc-4.2 -O2 -ftrapv: compares the values
1766 # * gcc-4.2 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1767 # * gcc-4.2 -O2 -fwrapv -ftrapv: compares the values
1769 # Apparently, -ftrapv does not work reliably at all.
1770 for overflow_flag in -fno-strict-overflow -fwrapv; do
1771 AC_MSG_CHECKING([whether $CC accepts $overflow_flag])
1773 CFLAGS="$CFLAGS $overflow_flag"
1774 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1775 [AC_MSG_RESULT([yes])
1777 [AC_MSG_RESULT([no])])
1782 AC_SUBST(GETTEXT_CFLAGS)
1783 EL_LOG_CONFIG(CFLAGS, [Compiler flags (CFLAGS)], [])
1784 EL_LOG_CONFIG(CPPFLAGS, [Preprocessor flags (CPPFLAGS)], [])
1785 EL_LOG_CONFIG(LDFLAGS, [Linker flags (LDFLAGS)], [])
1786 EL_LOG_CONFIG(LIBS, [Library flags (LIBS)], [])
1788 # ===================================================================
1789 # Colored make output
1790 # ===================================================================
1792 if test $(`which tput` colors 2> /dev/null || echo 0) -ge 4; then
1794 AC_SUBST(MAKE_COLOR)
1797 # ===================================================================
1799 # ===================================================================
1803 contrib/elinks.spec \
1804 contrib/lua/hooks.lua \
1805 contrib/conv/w3m2links.awk \
1807 doc/man/man1/elinks.1 \
1808 src/intl/gettext/ref-add.sed \
1809 src/intl/gettext/ref-del.sed
1813 abs_srcdir="$(cd "$srcdir" && pwd)"
1814 # builddir is always absolute!
1815 if test "$abs_srcdir" != "$builddir"; then
1816 # Bootstrap the Makefile creation
1817 echo "include $abs_srcdir/Makefile" > "$builddir/Makefile"
1818 "$MAKE" "SRC=$abs_srcdir" init
1820 # Make cg-status ignore this build directory
1821 echo "*" > "$builddir/.gitignore"
1824 # ===================================================================
1825 # Configuration summary
1826 # ===================================================================
1828 AC_MSG_RESULT(The following feature summary has been saved to features.log)