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 AC_CHECK_FILE("$srcdir/$features", [ . $srcdir/$features ])
52 AC_CHECK_FILE("$builddir/$features", [ . $builddir/$features ])
53 echo "Feature summary:" > features.log
55 # ===================================================================
56 # Checks for programs.
57 # ===================================================================
61 AC_PATH_PROGS(AWK, "$AWK")
65 AC_PATH_PROGS(GIT, "git")
66 AC_PATH_PROGS(SPARSE, "sparse")
73 if test "x$CONFIG_DOC" != xno; then
74 AC_PATH_PROGS(PYTHON, "python")
75 if test "x$PYTHON" != "x"; then
76 EL_CONFIG(CONFIG_ASCIIDOC, [AsciiDoc])
77 EL_CONFIG(MANUAL_ASCIIDOC, [HTML (one file)])
78 EL_CONFIG(MAN_ASCIIDOC, [HTML])
81 AC_PATH_PROGS(XMLTO, "xmlto")
82 if test "x$XMLTO" != "x"; then
83 EL_CONFIG(CONFIG_XMLTO, [XmlTo])
84 EL_CONFIG(MANUAL_XMLTO, [HTML (multiple files)])
85 EL_CONFIG(MAN_XMLTO, [man (groff)])
88 AC_PATH_PROGS(JW, "jw")
89 if test "x$JW" != "x"; then
90 EL_CONFIG(CONFIG_JW, [JadeWrapper])
91 EL_CONFIG(MANUAL_JW, [PDF])
94 AC_PATH_PROGS(POD2HTML, "pod2html")
95 if test "x$POD2HTML" != "x"; then
96 EL_CONFIG(CONFIG_POD2HTML, [Pod2HTML])
99 AC_PATH_PROGS(DOXYGEN, "doxygen")
100 if test "x$DOXYGEN" != "x"; then
101 EL_CONFIG(CONFIG_DOXYGEN, [Doxygen])
102 api_srcdir="$(cd "$srcdir" && pwd)/src"
107 AC_SUBST(CONFIG_ASCIIDOC)
108 AC_SUBST(CONFIG_DOXYGEN)
109 AC_SUBST(CONFIG_POD2HTML)
110 AC_SUBST(CONFIG_XMLTO)
113 EL_CONFIG_DEPENDS(CONFIG_DOC, [CONFIG_ASCIIDOC CONFIG_XMLTO CONFIG_JW CONFIG_POD2HTML], [Documentation Tools])
114 EL_CONFIG_DEPENDS(CONFIG_MANUAL, [MANUAL_ASCIIDOC MANUAL_XMLTO MANUAL_JW], [Manual Formats])
115 EL_CONFIG_DEPENDS(CONFIG_MANPAGE, [MAN_ASCIIDOC MAN_XMLTO], [Man Page Formats])
116 EL_CONFIG_DEPENDS(CONFIG_APIDOCS, [CONFIG_DOXYGEN], [API Documentation])
118 # gcc specific options (to be continued at the bottom of configure)
119 if test "x$ac_cv_c_compiler_gnu" = "xyes"; then
120 # We want to see all warnings and live with none.
121 # We can't set up -Werror here as there may be some warnings in test
122 # suite of configure, and we don't want to fail them.
123 CFLAGS="$CFLAGS -Wall"
126 # ===================================================================
127 # Checks for special OSes.
128 # ===================================================================
130 dnl EL_CHECK_COMPILER_MACRO(define, name, flagname)
131 AC_DEFUN([EL_CHECK_COMPILER_MACROS],
133 AC_MSG_CHECKING([for $2])
136 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[#ifndef $flag
138 #endif ]])],[$1=yes],[$1=no])
139 if test "[$]$1" = yes; then
140 EL_CONFIG([$1], [$2])
148 EL_CHECK_COMPILER_MACROS(CONFIG_OS_BEOS, [BEOS], [__BEOS__])
149 AC_SUBST(CONFIG_OS_BEOS)
151 EL_CHECK_COMPILER_MACROS(CONFIG_OS_RISCOS, [RISCOS], [__riscos__])
152 AC_SUBST(CONFIG_OS_RISCOS)
154 EL_CHECK_COMPILER_MACROS(CONFIG_OS_WIN32, [WIN32], [_WIN32 __WIN32__])
155 AC_SUBST(CONFIG_OS_WIN32)
157 EL_CHECK_COMPILER_MACROS(CONFIG_OS_OS2, [EMX], [__EMX__])
158 AC_SUBST(CONFIG_OS_OS2)
159 test "$CONFIG_OS_OS2" = yes && LDFLAGS=`echo "$LDFLAGS" | sed "s/-Zexe//g"`
161 AC_MSG_CHECKING([for UNIX])
162 dnl FIXME: some depend kind of mechanism
163 if test "$CONFIG_OS_BEOS" = no && \
164 test "$CONFIG_OS_RISCOS" = no && \
165 test "$CONFIG_OS_WIN32" = no && \
166 test "$CONFIG_OS_OS2" = no; then
167 EL_CONFIG(CONFIG_OS_UNIX, [UNIX])
171 AC_MSG_RESULT($CONFIG_OS_UNIX)
172 AC_SUBST(CONFIG_OS_UNIX)
174 # ===================================================================
175 # Checks for header files.
176 # ===================================================================
183 AC_CHECK_HEADERS(wchar.h wctype.h)
184 AC_CHECK_HEADERS(fcntl.h limits.h time.h unistd.h)
185 AC_CHECK_HEADERS(sigaction.h)
186 AC_CHECK_HEADERS(arpa/inet.h)
187 AC_CHECK_HEADERS(netinet/in_systm.h netinet/in_system.h netinet/ip.h)
188 AC_CHECK_HEADERS(netdb.h netinet/in.h netinet/in6_var.h)
189 AC_CHECK_HEADERS(ifaddrs.h)
190 AC_CHECK_HEADERS(sys/cygwin.h io.h)
191 AC_CHECK_HEADERS(sys/fmutex.h)
192 AC_CHECK_HEADERS(sys/ioctl.h sys/sockio.h)
193 AC_CHECK_HEADERS(sys/resource.h)
194 AC_CHECK_HEADERS(sys/select.h)
195 AC_CHECK_HEADERS(sys/signal.h)
196 AC_CHECK_HEADERS(sys/socket.h)
197 AC_CHECK_HEADERS(sys/time.h)
198 AC_CHECK_HEADERS(sys/utsname.h)
199 AC_CHECK_HEADERS([net/if.h], [], [],
200 [[#ifdef HAVE_SYS_SOCKET_H
201 # include <sys/socket.h> /* <net/if.h> on Mac OS X 10.5.4 needs this */
204 AC_CHECK_HEADERS(stdint.h inttypes.h)
205 AC_CHECK_HEADERS(locale.h pwd.h)
206 AC_CHECK_HEADERS(termios.h)
209 AC_CHECK_HEADERS(sys/un.h,
210 [CONFIG_INTERLINK=yes
211 EL_CONFIG([CONFIG_INTERLINK], [interlinking])],
212 [CONFIG_INTERLINK=no])
213 AC_SUBST(CONFIG_INTERLINK)
215 # ===================================================================
216 # Checks for typedefs, structures, and compiler characteristics.
217 # ===================================================================
222 AC_MSG_CHECKING([[for C99-conforming inline]])
240 [AC_MSG_RESULT([[yes]])
241 AC_DEFINE([NONSTATIC_INLINE], [inline],
242 [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.])],
243 [AC_MSG_RESULT([[no]])
244 AC_DEFINE([NONSTATIC_INLINE], [])])
245 EL_CHECK_CODE(typeof, HAVE_TYPEOF, [], [int a; typeof(a) b;])
250 EL_CHECK_TYPE(ssize_t, int)
251 EL_CHECK_SYS_TYPE(long long, HAVE_LONG_LONG, [])
252 EL_CHECK_SYS_TYPE(off_t, HAVE_OFF_T, [])
253 EL_CHECK_INT_TYPE(int32_t, HAVE_INT32_T)
254 EL_CHECK_INT_TYPE(uint32_t, HAVE_UINT32_T)
255 EL_CHECK_INT_TYPE(uint16_t, HAVE_UINT16_T)
257 AC_CHECK_SIZEOF(char, 1)
258 AC_CHECK_SIZEOF(short, 2)
259 AC_CHECK_SIZEOF(int, 4)
260 AC_CHECK_SIZEOF(long, 4)
261 test "x$HAVE_LONG_LONG" = xyes && AC_CHECK_SIZEOF(long long, 8)
262 test "x$HAVE_OFF_T" = xyes && AC_CHECK_SIZEOF(off_t, 4)
264 # Check for variadic macros
265 EL_CHECK_CODE([variadic macros], HAVE_VARIADIC_MACROS,
267 #define a(b,c...) printf(b,##c)],
268 [a("foo");a("%s","bar");a("%s%s","baz","quux");])
270 # ===================================================================
271 # Checks for library functions.
272 # ===================================================================
274 AC_PROG_GCC_TRADITIONAL
278 AC_CHECK_FUNCS(atoll gethostbyaddr herror strerror)
279 AC_CHECK_FUNCS(popen uname access chmod alarm timegm mremap)
280 AC_CHECK_FUNCS(strcasecmp strncasecmp strcasestr strstr strchr strrchr)
281 AC_CHECK_FUNCS(memmove bcopy stpcpy strdup index isdigit mempcpy memrchr)
282 AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf)
283 AC_CHECK_FUNCS(getifaddrs getpwnam inet_pton inet_ntop)
284 AC_CHECK_FUNCS(fflush fsync fseeko ftello sigaction)
285 AC_CHECK_FUNCS(gettimeofday clock_gettime)
286 AC_CHECK_FUNCS(setitimer, HAVE_SETITIMER=yes)
288 AC_CHECK_FUNCS([cygwin_conv_to_full_win32_path])
290 AC_CHECK_FUNCS(setenv putenv, HAVE_SETENV_OR_PUTENV=yes)
291 AC_CHECK_FUNCS(unsetenv)
292 AC_CHECK_FUNCS(getuid, HAVE_GETUID=yes)
293 AC_CHECK_FUNCS(geteuid, HAVE_GETEUID=yes)
295 AC_CHECK_FUNCS(wcwidth, HAVE_WCWIDTH=yes)
297 # These aren't probably needed now, as they are commented in links.h.
298 # I've no idea about their historical background, but I keep them here
299 # just in the case they will help later. --pasky
300 AC_CHECK_FUNCS(getpid, HAVE_GETPID=yes)
301 AC_CHECK_FUNCS(setpgid getpgid setpgrp getpgrp)
302 AC_CHECK_FUNCS(raise, HAVE_RAISE=yes)
303 AC_CHECK_FUNCS(kill, HAVE_KILL=yes)
305 AC_CHECK_FUNCS(fpathconf, HAVE_FPATHCONF=yes)
307 if test x"$HAVE_RAISE" = x; then
308 if test x"$HAVE_KILL" = x || test x"$HAVE_GETPID" = x; then
309 AC_MSG_ERROR([Unable to emulate raise()])
313 AC_CACHE_CHECK([for __va_copy],el_cv_HAVE_VA_COPY,[
314 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
315 va_list ap1,ap2;]], [[__va_copy(ap1,ap2);]])],[el_cv_HAVE_VA_COPY=yes],[el_cv_HAVE_VA_COPY=no])])
316 if test x"$el_cv_HAVE_VA_COPY" = x"yes"; then
317 EL_DEFINE(HAVE_VA_COPY, __va_copy)
320 AC_CACHE_CHECK([for sysconf(_SC_PAGE_SIZE)],el_cv_HAVE_SC_PAGE_SIZE,[
321 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
322 ]], [[int page_size = sysconf(_SC_PAGE_SIZE);]])],[el_cv_HAVE_SC_PAGE_SIZE=yes],[el_cv_HAVE_SC_PAGE_SIZE=no])])
323 if test x"$el_cv_HAVE_SC_PAGE_SIZE" = x"yes"; then
324 EL_DEFINE(HAVE_SC_PAGE_SIZE, _SC_PAGE_SIZE)
327 AC_CACHE_CHECK([for C99 vsnprintf],el_cv_HAVE_C99_VSNPRINTF,[
328 AC_RUN_IFELSE([AC_LANG_SOURCE([[
336 int bar(char *buf, const char *format, va_list ap)
338 return vsnprintf(buf, 0, format, ap);
341 void foo(const char *format, ...) {
345 va_start(ap, format);
346 len = bar(buf, format, ap);
348 if ((len != 6) && (len != 7)) exit(1); /* \n -> \r\n */
350 va_start(ap, format);
351 len = bar(buf, format, ap);
353 if ((len != 6) && (len != 7)) exit(1);
355 if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(1);
359 main() { foo("hello\n"); }
360 ]])],[el_cv_HAVE_C99_VSNPRINTF=yes],[el_cv_HAVE_C99_VSNPRINTF=no],[el_cv_HAVE_C99_VSNPRINTF=cross])])
361 if test x"$el_cv_HAVE_C99_VSNPRINTF" = x"yes"; then
362 EL_DEFINE(HAVE_C99_VSNPRINTF, [C99 compliant vsnprintf()])
365 # OpenSSL and Lua frequently need dlopen
366 AC_CHECK_LIB(dl, dlopen)
368 # ===================================================================
369 # Checks for libraries.
370 # ===================================================================
372 AC_CHECK_FUNC(socket, cf_result=yes, cf_result=no)
373 if test "$cf_result" = no; then
374 AC_CHECK_LIB(socket, socket)
377 AC_CHECK_FUNC(setsockopt, cf_result=yes, cf_result=no)
378 if test "$cf_result" = no; then
379 AC_CHECK_LIB(socket, setsockopt)
382 AC_CHECK_FUNC(gethostbyname, cf_result=yes, cf_result=no)
383 if test "$cf_result" = no; then
384 AC_CHECK_LIB(socket, gethostbyname, cf_result=yes, cf_result=no)
385 if test "$cf_result" = no; then
386 AC_CHECK_LIB(nsl, gethostbyname)
388 test -z "`echo $LIBS | grep -- -lsocket`" && LIBS="$LIBS -lsocket"
392 # ===================================================================
393 # Checks for packaging specific options.
394 # ===================================================================
396 AC_ARG_WITH(xterm, [ --with-xterm how to invoke the X terminal emulator],
397 [ if test "$withval" != no && test "$withval" != yes; then
398 AC_DEFINE_UNQUOTED(XTERM, "$withval", [How to invoke XTerm])
401 # ===================================================================
402 # Checks for a libraries, optional even if installed.
403 # ===================================================================
405 dnl EL_CHECK_OPTIONAL_LIBRARY(define, name, header, lib, function)
406 AC_DEFUN([EL_CHECK_OPTIONAL_LIBRARY],
408 AC_MSG_CHECKING([for $2 support])
410 if test "[$]$1" != no; then
413 if test -n "$withval" && test -d "$withval"; then
414 # Be a little more careful when setting
415 # include and lib directories. This way
416 # $withval will work when includes are
417 # there but the library is in the common
418 # /usr/lib ... Does the right thing when
419 # looking for gc on Debian.
420 if test -d "$withval/include"; then
421 CFLAGS="$CFLAGS -I$withval/include"
422 CPPFLAGS="$CPPFLAGS -I$withval/include"
424 CFLAGS="$CFLAGS -I$withval"
425 CPPFLAGS="$CPPFLAGS -I$withval"
427 if test -d "$withval/lib"; then
428 LDFLAGS="$LDFLAGS -L$withval/lib"
432 AC_CHECK_HEADERS([$3], [$1=yes], [$1=no; break;])
433 if test "[$]$1" = yes; then
434 AC_CHECK_LIB([$4], [$5], [$1=yes], [$1=no])
437 if test "[$]$1" = yes; then
438 EL_CONFIG([$1], [$2])
441 if test -n "[$]WITHVAL_$1" &&
442 test "[$]WITHVAL_$1" != xno; then
443 AC_MSG_ERROR([$2 not found])
448 AC_MSG_RESULT(disabled)
452 dnl EL_CONFIG_OPTIONAL_LIBRARY(define, name, header, lib, function, confhelp)
453 AC_DEFUN([EL_CONFIG_OPTIONAL_LIBRARY],
455 if test "x[$]$1" != xno; then $1=yes; fi
458 AC_ARG_WITH([$2], [$6], [WITHVAL_$1="[$]withval"])
459 if test "x[$]WITHVAL_$1" = xno; then $1=no; fi
460 if test "x[$]WITHVAL_$1" = xyes; then $1=yes; fi
462 EL_CHECK_OPTIONAL_LIBRARY([$1], [$2], [$3], [$4], [$5])
464 EL_LOG_CONFIG([$1], [$2], [])
467 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GPM, gpm, gpm.h, gpm, Gpm_Open,
468 [ --without-gpm disable gpm (mouse) support])
470 # ELinks calls deflateInit2 with windowBits = MAX_WBITS | 32, to
471 # enable automatic decoding of both zlib and gzip headers. This
472 # feature was added in zlib 1.2.0.2; earlier versions return an error.
473 # The gzclearerr function was also added in zlib 1.2.0.2, so check for
474 # that, even though ELinks does not actually call gzclearerr.
475 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GZIP, zlib, zlib.h, z, gzclearerr,
476 [ --without-zlib disable zlib support])
478 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_BZIP2, bzlib, bzlib.h, bz2, BZ2_bzReadOpen,
479 [ --without-bzlib disable bzlib support])
481 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_IDN, idn, idna.h, idn, stringprep_check_version,
482 [ --without-idn disable international domain names support])
484 if test "x${with_gc}" != xno; then
485 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GC, gc, gc.h, gc, GC_init,
486 [ --with-gc enable Boehm's garbage collector])
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 "$CONFIG_OS_WIN32" = yes; then
573 # ===================================================================
574 # Check for SEE (Simple Ecmascript Engine)
575 # ===================================================================
576 AC_ARG_WITH(see, [ --with-see enable Simple Ecmascript Engine (SEE) support],
577 [ if test "x$withval" != xno; then enable_see=yes; fi ])
579 # The following is probably bad, ugly and so on. Stolen from Guile's (1.4)
580 # GUILE_FLAGS but I really don't want to require people to have Guile in order
581 # to compile CVS. Also, the macro seems to be really stupid regarding searching
582 # for Guile in $PATH etc. --pasky
584 CONFIG_ECMASCRIPT_SEE=no
586 if test "$enable_see" = "yes"; then
587 if test -d "$withval"; then
588 SEE_PATH="$withval:$PATH"
593 AC_PATH_PROG(SEE_CONFIG, libsee-config, no, $SEE_PATH)
594 AC_MSG_CHECKING([for SEE (2.0.1131 or later)])
595 if test "$SEE_CONFIG" != no; then
597 SEE_LIBS="`$SEE_CONFIG --libs`"
598 SEE_CFLAGS="`$SEE_CONFIG --cppflags`"
599 CPPFLAGS="$SEE_CFLAGS $CPPFLAGS"
600 LIBS="$SEE_LIBS $LIBS_X"
601 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <see/see.h>]], [[#if SEE_VERSION_API_MAJOR < 2
604 ]])],[cf_result=yes],[cf_result=no])
606 if test "$cf_result" = yes; then
607 LIBS="$SEE_LIBS $LIBS"
608 EL_CONFIG(CONFIG_ECMASCRIPT_SEE, [SEE])
611 AC_MSG_RESULT($cf_result)
613 if test -n "$withval" && test "x$withval" != xno; then
614 AC_MSG_ERROR([SEE not found])
616 AC_MSG_WARN([SEE support disabled])
621 # ===================================================================
622 # Check for SpiderMonkey, optional even if installed.
623 # ===================================================================
625 AC_ARG_WITH(spidermonkey, [ --without-spidermonkey disable SpiderMonkey Mozilla JavaScript engine support],
626 [if test "$withval" = no; then disable_spidermonkey=yes; fi])
627 AC_MSG_CHECKING([for SpiderMonkey (1.5 RC3a or later)])
632 if test -z "$disable_spidermonkey"; then
633 if test ! -d "$withval"; then
636 for spidermonkeydir in "$withval" "" /usr /usr/local /opt/spidermonkey /opt/js; do
637 for spidermonkeyinclude in "/include" "/include/js" "/include/smjs" "/include/mozjs"; do
638 for spidermonkeylib in js smjs mozjs; do
639 if test "$cf_result" = no &&
640 test -f "$spidermonkeydir$spidermonkeyinclude/jsapi.h"; then
641 SPIDERMONKEY_LIBS="-L$spidermonkeydir/lib -l$spidermonkeylib"
642 SPIDERMONKEY_CFLAGS="-I$spidermonkeydir$spidermonkeyinclude"
644 LIBS="$SPIDERMONKEY_LIBS $LIBS_X"
645 CFLAGS="$CFLAGS_X $SPIDERMONKEY_CFLAGS"
646 CPPFLAGS="$CPPFLAGS_X $SPIDERMONKEY_CFLAGS"
648 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#define XP_UNIX
649 #include <jsapi.h>]], [[JS_GetReservedSlot(NULL, NULL, 0, NULL)]])],[cf_result=yes],[cf_result=no])
656 AC_MSG_RESULT($cf_result)
657 CONFIG_SPIDERMONKEY="$cf_result"
658 if test "$cf_result" = "yes"; then
659 AC_CHECK_FUNCS([[JS_ReportAllocationOverflow]])
660 AC_CHECK_FUNCS(JS_SetBranchCallback)
661 AC_CHECK_FUNCS(JS_TriggerOperationCallback, HAVE_JS_TRIGGEROPERATIONCALLBACK=yes)
665 if test "x$CONFIG_SPIDERMONKEY" = xyes &&
666 test "x$CONFIG_ECMASCRIPT_SEE" != xyes; then
667 EL_CONFIG(CONFIG_ECMASCRIPT_SMJS, [SpiderMonkey document scripting])
669 CONFIG_ECMASCRIPT_SMJS=no
672 EL_CONFIG_DEPENDS(CONFIG_ECMASCRIPT, [CONFIG_ECMASCRIPT_SEE CONFIG_ECMASCRIPT_SMJS], [ECMAScript (JavaScript)])
673 AC_SUBST(CONFIG_ECMASCRIPT_SEE)
674 AC_SUBST(CONFIG_ECMASCRIPT_SMJS)
676 if test "x$CONFIG_ECMASCRIPT_SMJS" = xyes &&
677 test "x$HAVE_JS_TRIGGEROPERATIONCALLBACK" = xyes &&
678 test "x$HAVE_SETITIMER" = xyes; then
679 EL_CONFIG(CONFIG_ECMASCRIPT_SMJS_HEARTBEAT, [ECMAScript heartbeat support])
681 CONFIG_ECMASCRIPT_SMJS_HEARTBEAT=no
683 AC_SUBST(CONFIG_ECMASCRIPT_SMJS_HEARTBEAT)
686 # ===================================================================
687 # Optional Spidermonkey-based ECMAScript browser scripting
688 # ===================================================================
690 AC_ARG_ENABLE(sm-scripting,
691 [ --disable-sm-scripting ECMAScript browser scripting (requires Spidermonkey)],
692 [if test "$enableval" != no; then enableval="yes"; fi
693 CONFIG_SCRIPTING_SPIDERMONKEY="$enableval";])
695 if test "x$CONFIG_SPIDERMONKEY" = xyes &&
696 test "x$CONFIG_SCRIPTING_SPIDERMONKEY" = xyes; then
697 EL_CONFIG(CONFIG_SCRIPTING_SPIDERMONKEY, [SpiderMonkey])
699 CONFIG_SCRIPTING_SPIDERMONKEY=no
702 if test "x$CONFIG_ECMASCRIPT_SMJS" = xyes ||
703 test "x$CONFIG_SCRIPTING_SPIDERMONKEY" = xyes; then
704 LIBS="$LIBS $SPIDERMONKEY_LIBS"
705 AC_SUBST(SPIDERMONKEY_LIBS)
706 AC_SUBST(SPIDERMONKEY_CFLAGS)
707 AC_SUBST(CONFIG_SPIDERMONKEY)
710 # ===================================================================
711 # Check for Guile, optional even if installed.
712 # ===================================================================
716 AC_ARG_WITH(guile, [ --with-guile enable Guile support],
717 [ if test "x$withval" != xno; then enable_guile=yes; fi ])
719 # The following is probably bad, ugly and so on. Stolen from Guile's (1.4)
720 # GUILE_FLAGS but I really don't want to require people to have Guile in order
721 # to compile CVS. Also, the macro seems to be really stupid regarding searching
722 # for Guile in $PATH etc. --pasky
724 AC_MSG_CHECKING([for Guile])
726 if test "$enable_guile" = "yes"; then
728 ## Based on the GUILE_FLAGS macro.
730 if test -d "$withval"; then
731 GUILE_PATH="$withval:$PATH"
736 AC_PATH_PROG(GUILE_CONFIG, guile-config, no, $GUILE_PATH)
738 ## First, let's just see if we can find Guile at all.
739 if test "$GUILE_CONFIG" != no; then
742 GUILE_LIBS="`guile-config link`"
743 GUILE_CFLAGS="`guile-config compile`"
744 LIBS="$GUILE_LIBS $LIBS"
745 EL_CONFIG(CONFIG_SCRIPTING_GUILE, [Guile])
746 AC_SUBST(GUILE_CFLAGS)
748 ***********************************************************************
749 The Guile support is incomplete and not so well integrated to ELinks
750 yet. That means, e.g., that you have no Guile console and there might
751 not be all the necessary hooks. Also, the Guile interface is not too
752 well tested (success stories heartily welcomed!). See
753 src/scripting/guile/README for further details and hints.
754 ***********************************************************************
757 if test -n "$withval" && test "x$withval" != xno; then
758 AC_MSG_ERROR([Guile not found])
760 AC_MSG_WARN([Guile support disabled])
767 # ===================================================================
769 # ===================================================================
772 AC_ARG_WITH(perl, [ --with-perl enable Perl support],
774 if test "$withval" = yes; then
775 # FIXME: If withval is a valid directory append it to PATH
776 # so that you can specify one of several perl installations.
782 AC_MSG_CHECKING([for Perl])
788 if test "$enable_perl" = "yes"; then
789 PERL_LIBS="`perl -MExtUtils::Embed -e ldopts`"
790 PERL_CFLAGS="`perl -MExtUtils::Embed -e ccopts`"
791 LIBS="$PERL_LIBS $LIBS"
792 CFLAGS="$PERL_CFLAGS $CFLAGS"
793 CPPFLAGS="$CPPFLAGS $PERL_CFLAGS"
794 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
798 ]], [[PerlInterpreter *my_perl = perl_alloc();]])],[cf_result=yes],[cf_result=no])
801 if test "$cf_result"; then AC_MSG_RESULT($cf_result); fi
803 AC_MSG_CHECKING([whether POPpx works without an n_a variable])
804 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
807 extern PerlInterpreter *my_perl;
808 ]], [[dSP; (void) POPpx;]])],[AC_MSG_RESULT([yes])
809 AC_DEFINE([CONFIG_PERL_POPPX_WITHOUT_N_A], [1],
810 [Define if using Perl 5.8.8 or later, where the "POPpx" macro
811 no longer needs an "n_a" variable like it did in 5.8.7])],[AC_MSG_RESULT([no])])
813 if test "$cf_result" != "yes"; then
816 EL_CONFIG(CONFIG_SCRIPTING_PERL, [Perl])
819 CPPFLAGS="$CPPFLAGS_X"
821 AC_SUBST(PERL_CFLAGS)
824 # ===================================================================
826 # ===================================================================
829 AC_ARG_WITH(python, [[ --with-python[=DIR] enable Python support]],
830 [ if test "x$withval" != xno; then enable_python=yes; fi ])
835 AC_MSG_CHECKING([for Python])
837 if test "$enable_python" = "yes"; then
840 if test -d "$withval"; then
841 PYTHON_PATH="$withval:$PATH"
846 AC_PATH_PROG(PYTHON, python, no, $PYTHON_PATH)
848 if test "$PYTHON" != no; then
851 PYTHON_CFLAGS="`$PYTHON -c 'from distutils import sysconfig; print "-I%s -I%s" % (sysconfig.get_python_inc(), sysconfig.get_python_inc(plat_specific=True))'`"
852 PYTHON_LIBS="`$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"))'`"
853 LIBS="$PYTHON_LIBS $LIBS"
854 CPPFLAGS="$CPPFLAGS $PYTHON_CFLAGS"
855 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <Python.h>]], [[Py_Initialize();]])],[cf_result=yes],[cf_result=no])
857 if test "$cf_result" != "yes"; then
860 EL_CONFIG(CONFIG_SCRIPTING_PYTHON, [Python])
861 AC_SUBST(PYTHON_LIBS)
862 AC_SUBST(PYTHON_CFLAGS)
863 CPPFLAGS="$CPPFLAGS_X"
865 ***********************************************************************
866 The Python support is incomplete and not so well integrated to ELinks
867 yet. That means, e.g., that you have no Python console and there might
868 not be all the necessary hooks. Also, the Python interface is not too
869 well tested (success stories heartily welcomed!).
870 ***********************************************************************
874 if test -n "$withval" && test "x$withval" != xno; then
875 AC_MSG_ERROR([Python not found])
877 AC_MSG_WARN([Python support disabled])
885 # ===================================================================
886 # Check for Lua, optional even if installed.
887 # ===================================================================
889 # Do this the long way, as FreeBSD reportedly needs -L<dir> for
890 # anything other than /usr/lib, and Lua is very often in /usr/local/lib.
892 AC_ARG_WITH(lua, [ --without-lua disable Lua support],
893 [if test "$withval" = no; then disable_lua=yes; fi])
894 AC_MSG_CHECKING([for Lua])
899 if test -z "$disable_lua"; then
900 if test ! -d "$withval"; then
903 for luadir in "$withval" "" /usr /usr/local; do
904 for suffix in "" 50; do
905 if test "$cf_result" = no && ( test -f "$luadir/include/lua.h" || \
906 test -f "$luadir/include/lua$suffix/lua.h" ) ; then
907 LUA_LIBS="-L$luadir/lib -llua$suffix -llualib$suffix -lm"
908 LUA_CFLAGS="-I$luadir/include -I$luadir/include/lua$suffix"
910 LIBS="$LUA_LIBS $LIBS_X"
911 CFLAGS="$CFLAGS_X $LUA_CFLAGS"
912 CPPFLAGS="$CPPFLAGS_X $LUA_CFLAGS"
914 # Check that it is a compatible Lua version
915 AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <lua.h>
916 #include <lualib.h>]], [[ lua_State *L = lua_open();
922 lua_pushboolean(L, 1);
923 lua_close(L);]])],[cf_result=yes],[cf_result=no])
929 AC_MSG_RESULT($cf_result)
931 if test "$cf_result" != yes; then
934 EL_CONFIG(CONFIG_SCRIPTING_LUA, [Lua])
935 AC_CHECK_HEADERS(lauxlib.h)
938 CPPFLAGS="$CPPFLAGS_X"
943 # ===================================================================
944 # Check for TRE library
945 # ===================================================================
947 # This section only checks that --without-tre is not given and the
948 # library seems to work, and sets TRE_CFLAGS, TRE_LIBS, and
949 # tre_log. It does not define CONFIG_TRE, and always resets
950 # LIBS and CFLAGS back to their original values.
952 # After any --enable-utf-8 and --disable-utf-8 options have been
953 # handled, a separate section decides whether to actually use TRE.
955 # tre version 0.8.0 or higher is required which have the "tre_" prefix
958 AC_ARG_WITH([[tre]], [[ --without-tre disable TRE regex search support]])
959 if test "$with_tre" = no; then
960 AC_MSG_CHECKING([[for TRE]])
961 AC_MSG_RESULT([[disabled]])
962 tre_log="no (explicitly disabled)"
964 AC_MSG_CHECKING([[for TRE in pkg-config]])
965 if pkg-config tre; then
966 TRE_CFLAGS=`pkg-config --cflags tre`
967 TRE_LIBS=`pkg-config --libs tre`
968 AC_MSG_RESULT([[yes]])
970 # <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513055>
971 # "libtre-dev: /usr/lib/pkgconfig/tre.pc missing"
972 # so we look for the library even if pkg-config doesn't know about it.
975 AC_MSG_RESULT([[no, but let's try defaults]])
978 AC_MSG_CHECKING([[for TRE header and library]])
980 CFLAGS="$TRE_CFLAGS $CFLAGS"
981 LIBS="$TRE_LIBS $LIBS" # must be first, because of regfree conflict
982 AC_TRY_LINK([#include <tre/tre.h>],
985 tre_regwcomp(&re, L"zap", REG_ICASE);
986 tre_regwexec(&re, L"ELIZAPROGRAM", 1, match, 0);],
987 [AC_MSG_RESULT([[yes]])
988 tre_log="available"],
989 [AC_MSG_RESULT([[no]])
990 tre_log="no (TRE not found)"])
994 # ===================================================================
995 # Check for Ruby, optional even if installed.
996 # ===================================================================
998 EL_CONFIG_SCRIPTING_RUBY
1000 # ===================================================================
1001 # Setup global scripting
1002 # ===================================================================
1004 EL_CONFIG_DEPENDS(CONFIG_SCRIPTING, [CONFIG_SCRIPTING_GUILE CONFIG_SCRIPTING_LUA CONFIG_SCRIPTING_PERL CONFIG_SCRIPTING_PYTHON CONFIG_SCRIPTING_RUBY CONFIG_SCRIPTING_SPIDERMONKEY], [Browser scripting])
1005 AC_SUBST(CONFIG_SCRIPTING_GUILE)
1006 AC_SUBST(CONFIG_SCRIPTING_LUA)
1007 AC_SUBST(CONFIG_SCRIPTING_PERL)
1008 AC_SUBST(CONFIG_SCRIPTING_PYTHON)
1009 AC_SUBST(CONFIG_SCRIPTING_RUBY)
1010 AC_SUBST(CONFIG_SCRIPTING_SPIDERMONKEY)
1011 AC_SUBST(CONFIG_SCRIPTING)
1014 # ===================================================================
1015 # Check for SSL support.
1016 # ===================================================================
1018 # We by default use OpenSSL, and we always prefer it. However, when GNUTLS
1019 # is enabled, we won't try to use OpenSSL anymore.
1021 # For wiping SSL hooks..
1024 chosen_ssl_library=""
1026 AC_ARG_WITH(gnutls, [[ --without-gnutls disable GNUTLS SSL support]])
1027 AC_ARG_WITH(gnutls, [[ --with-gnutls enable GNUTLS SSL support]],
1028 [case "$with_gnutls" in
1030 "yes") chosen_ssl_library="GNUTLS" ;;
1031 *) chosen_ssl_library="GNUTLS"
1032 AC_MSG_WARN([[Support for --with-gnutls=DIR has been removed.
1033 You may have to set the PKG_CONFIG_PATH environment variable instead.]]) ;;
1036 AC_ARG_WITH(openssl, [[ --without-openssl disable OpenSSL support]])
1037 AC_ARG_WITH(openssl, [[ --with-openssl[=DIR] enable OpenSSL support (default)]],
1038 [case "$with_openssl" in
1040 *) chosen_ssl_library="OpenSSL" ;;
1043 AC_ARG_WITH(nss_compat_ossl, [[ --with-nss_compat_ossl[=DIR]
1044 NSS compatibility SSL libraries/include files]],
1045 [case "$with_nss_compat_ossl" in
1047 *) chosen_ssl_library="nss_compat_ossl" ;;
1050 # ---- nss_compat_ossl
1052 if test "$with_nss_compat_ossl" = no; then
1053 # explicitly disabled
1055 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "nss_compat_ossl"; then
1056 # not used, because $chosen_ssl_library was chosen
1058 elif test -z "${with_nss_compat_ossl+set}"; then
1059 # SSL_library_init() in nss_compat_ossl 0.9.2 calls exit(1)
1060 # with no error message if there is no certificate database.
1061 # https://bugzilla.redhat.com/show_bug.cgi?id=463437
1062 # So ELinks uses nss_compat_ossl only if explicitly requested.
1066 if test "$with_nss_compat_ossl" = yes; then
1067 if pkg-config nss; then
1068 CFLAGS="$CFLAGS_X `pkg-config --cflags nss`"
1069 LIBS="$LIBS_X `pkg-config --libs nss`"
1071 with_nss_compat_ossl=no
1074 # Without pkg-config, we'll kludge in some defaults
1075 CFLAGS="$CFLAGS_X -I$with_nss_compat_ossl/include -I/usr/include/nss3 -I/usr/include/nspr4"
1076 LIBS="$LIBS_X -L$with_nss_compat_ossl/lib -lssl3 -lsmime3 -lnss3 -lplds4 -lplc4 -lnspr4 -lpthread -ldl"
1078 AC_CHECK_HEADERS(nss_compat_ossl/nss_compat_ossl.h,, [with_nss_compat_ossl=no], [#define NSS_COMPAT_OSSL_H])
1079 AC_CHECK_LIB(nss_compat_ossl, X509_free,, [with_nss_compat_ossl=no])
1081 if test "$with_nss_compat_ossl" = "no"; then
1084 LIBS="$LIBS -lnss_compat_ossl"
1085 EL_CONFIG(CONFIG_NSS_COMPAT_OSSL, [nss_compat_ossl])
1086 chosen_ssl_library="nss_compat_ossl"
1092 AC_MSG_CHECKING([for OpenSSL])
1096 if test "$with_openssl" = no; then
1097 cf_result="explicitly disabled"
1099 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "OpenSSL"; then
1100 cf_result="not used, because $chosen_ssl_library was chosen"
1104 for ssldir in "$with_openssl" "" /usr /usr/local/openssl \
1105 /usr/lib/openssl /usr/local/ssl \
1106 /usr/local/www /usr/lib/ssl /usr/local \
1107 /usr/pkg /opt /opt/openssl; do
1108 if test "$cf_result" = no; then
1109 if test -d "$ssldir"; then
1110 OPENSSL_CFLAGS="-I$ssldir/include"
1111 LIBS="-L$ssldir/lib -lssl -lcrypto $LIBS_X"
1112 CFLAGS="$CFLAGS_X $OPENSSL_CFLAGS"
1113 CPPFLAGS="$CPPFLAGS_X $OPENSSL_CFLAGS"
1114 # # FIXME: This created serious portability problems. --pasky
1115 # if test "$CC" == "gcc"; then
1116 # # I'm not sure about compatibility here. --pasky
1117 # LIBS="$LIBS -R$ssldir/lib"
1120 LIBS="-lssl -lcrypto $LIBS_X"
1122 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <openssl/ssl.h>]], [[OpenSSL_add_all_algorithms()]])],[cf_result=yes],[cf_result=no])
1123 if test "$cf_result" != yes; then
1124 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <openssl/ssl.h>]], [[SSLeay_add_ssl_algorithms()]])],[cf_result=yes],[cf_result=no])
1129 if test "$cf_result" != yes; then
1130 if test "${with_openssl-no}" != "no"; then
1131 AC_MSG_ERROR([OpenSSL not found])
1135 EL_CONFIG(CONFIG_OPENSSL, [OpenSSL])
1136 chosen_ssl_library="OpenSSL"
1139 AC_SUBST(OPENSSL_CFLAGS)
1143 AC_MSG_RESULT($cf_result)
1147 # GnuTLS 2.2.0 changed libgnutls-openssl from GPLv2+
1148 # to GPLv3+. Don't link that with the GPLv2 ELinks.
1149 # ELinks will use its internal MD5 code instead.
1150 CONFIG_GNUTLS_OPENSSL_COMPAT=no
1152 if test "$with_gnutls" = no; then
1153 AC_MSG_CHECKING([[for GNUTLS]])
1154 AC_MSG_RESULT([[explicitly disabled]])
1156 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "GNUTLS"; then
1157 AC_MSG_CHECKING([[for GNUTLS]])
1158 AC_MSG_RESULT([[not used, because $chosen_ssl_library was chosen]])
1162 AC_MSG_CHECKING([[for GNUTLS (1.2 or later) in pkg-config]])
1163 if pkg-config --atleast-version=1.2 gnutls; then
1164 GNUTLS_CFLAGS=`pkg-config --cflags gnutls`
1165 GNUTLS_LIBS=`pkg-config --libs gnutls`
1166 AC_MSG_RESULT([[yes: $GNUTLS_CFLAGS $GNUTLS_LIBS]])
1169 LIBS="$GNUTLS_LIBS $LIBS"
1170 CFLAGS="$CFLAGS $GNUTLS_CFLAGS"
1171 CPPFLAGS="$CPPFLAGS $GNUTLS_CFLAGS"
1173 # Verify if it's really usable. gnutls_session was
1174 # renamed to gnutls_session_t before GNU TLS 1.2.0
1175 # (on 2004-06-13); ELinks now requires this.
1176 AC_MSG_CHECKING([[whether GNUTLS can be linked with]])
1177 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <gnutls/gnutls.h>]],
1178 [[gnutls_session_t dummy;
1179 gnutls_check_version(NULL)]])],
1182 AC_MSG_RESULT([[$cf_result]])
1184 if test "$cf_result" = yes; then
1185 # According to gnutls/NEWS, the function was originally
1186 # added as gnutls_set_default_priority2 in GNUTLS 2.1.4
1187 # (released 2007-10-27) and then renamed to
1188 # gnutls_priority_set_direct in GNUTLS 2.1.7 (released
1190 AC_CHECK_FUNCS([gnutls_priority_set_direct])
1195 AC_MSG_RESULT([[$cf_result]])
1198 if test "$cf_result" = yes; then
1199 EL_CONFIG(CONFIG_GNUTLS, [GNUTLS])
1200 chosen_ssl_library="GNUTLS"
1202 LIBS="$GNUTLS_LIBS $LIBS"
1203 AC_SUBST(GNUTLS_CFLAGS)
1205 elif test "${with_gnutls-no}" != "no"; then
1206 AC_MSG_ERROR([[GNUTLS (1.2 or later) not found. ELinks no longer supports GNUTLS 1.1.]])
1212 EL_CONFIG_DEPENDS(CONFIG_SSL, [CONFIG_OPENSSL CONFIG_GNUTLS CONFIG_NSS_COMPAT_OSSL], [SSL])
1213 AC_SUBST(CONFIG_GNUTLS_OPENSSL_COMPAT)
1214 AC_SUBST(CONFIG_OPENSSL)
1215 AC_SUBST(CONFIG_GNUTLS)
1216 AC_SUBST(CONFIG_NSS_COMPAT_OSSL)
1220 AC_MSG_CHECKING([whether to be or not to be])
1221 AC_MSG_RESULT([needs to be determined experimentally])
1223 # ===================================================================
1224 # Check for IPv6 support and related functions.
1225 # ===================================================================
1227 EL_CHECK_NET_TYPE(struct sockaddr_storage, HAVE_SA_STORAGE, [])
1228 EL_CHECK_NET_TYPE(struct sockaddr_in6, HAVE_SA_IN6, [#include <netinet/in.h>])
1229 EL_CHECK_NET_TYPE(struct addrinfo, HAVE_ADDRINFO, [#include <netdb.h>])
1231 AC_CHECK_FUNC(getaddrinfo, HAVE_GETADDRINFO=yes, HAVE_GETADDRINFO=no)
1232 if test "$HAVE_GETADDRINFO" != yes; then
1233 AC_CHECK_LIB(inet6, getaddrinfo, HAVE_GETADDRINFO=yes, HAVE_GETADDRINFO=no)
1234 if test "$HAVE_GETADDRINFO" = yes; then
1235 LIBS="$LIBS -linet6"
1240 # ===================================================================
1241 # Checking for X11 (window title restoring).
1242 # ===================================================================
1245 if test x"$no_x" != xyes; then
1247 if test -n "$x_includes"; then
1248 X_CFLAGS="-I$x_includes"
1249 CPPFLAGS="$CPPLAGS $X_CFLAGS"
1250 CFLAGS="$CFLAGS $X_CFLAGS"
1252 if test -n "$x_libraries"; then
1253 LDFLAGS="$LDFLAGS -L$x_libraries"
1256 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]], [[XrmInitialize()]])],[cf_result=yes],[cf_result=no])
1258 if test "$cf_result" = yes; then
1259 if test -n "$x_libraries"; then
1260 LDFLAGS="$LDFLAGS -L$x_libraries"
1263 EL_DEFINE(HAVE_X11, [X11 for restoring window titles])
1269 # ===================================================================
1270 # Backtraces displaying support.
1271 # ===================================================================
1273 AC_CHECK_HEADERS(execinfo.h, HAVE_EXECINFO=yes, HAVE_EXECINFO=no)
1274 # possible checks for other system-specific means go here
1277 # ===================================================================
1278 # Gettext grey zone. Beware.
1279 # ===================================================================
1281 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"
1285 dnl AC_MSG_CHECKING([how many characters your English alphabet has])
1286 dnl # f33r d4 l33t... I hope it's portable. :)
1287 dnl cf_result=$((48#z - 48#a + 1));
1288 dnl AC_MSG_RESULT($cf_result)
1291 # ===================================================================
1292 # Compile-time features control
1293 # ===================================================================
1295 EL_ARG_ENABLE(CONFIG_COOKIES, cookies, [Cookies],
1296 [ --disable-cookies disable cookie support])
1298 EL_ARG_ENABLE(CONFIG_FORMHIST, formhist, [Form history],
1299 [ --disable-formhist disable form history support])
1301 EL_ARG_ENABLE(CONFIG_GLOBHIST, globhist, [Global history],
1302 [ --disable-globhist disable global history support])
1305 EL_ARG_ENABLE(CONFIG_MAILCAP, mailcap, [Mailcap],
1306 [ --disable-mailcap disable mailcap support])
1308 EL_ARG_ENABLE(CONFIG_MIMETYPES, mimetypes, [Mimetypes files],
1309 [ --disable-mimetypes disable mimetypes files support])
1312 EL_ARG_DEPEND(CONFIG_IPV6, ipv6,
1313 [HAVE_SA_STORAGE:yes HAVE_SA_IN6:yes HAVE_ADDRINFO:yes HAVE_GETADDRINFO:yes],
1315 [ --disable-ipv6 disable IPv6 support])
1317 EL_ARG_ENABLE(CONFIG_BITTORRENT, bittorrent, [BitTorrent protocol],
1318 [ --enable-bittorrent enable BitTorrent protocol support])
1320 EL_ARG_ENABLE(CONFIG_DATA, data, [Data protocol],
1321 [ --disable-data disable data protocol support])
1323 EL_ARG_ENABLE(CONFIG_URI_REWRITE, uri-rewrite, [URI rewriting],
1324 [ --disable-uri-rewrite disable URI rewrite support])
1326 EL_ARG_DEPEND(CONFIG_CGI, cgi, [HAVE_SETENV_OR_PUTENV:yes], [Local CGI],
1327 [ --enable-cgi enable local CGI support])
1329 EL_ARG_ENABLE(CONFIG_FINGER, finger, [Finger protocol],
1330 [ --enable-finger enable finger protocol support])
1332 # ===================================================================
1334 # ===================================================================
1337 if test "x${enable_fsp}" != xno; then
1338 AC_CHECK_HEADERS(fsplib.h, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1340 if test "$HAVE_FSPLIB" = yes; then
1341 AC_CHECK_LIB(fsplib, fsp_open_session, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1342 if test "$HAVE_FSPLIB" = yes; then
1343 LIBS="$LIBS -lfsplib"
1345 AC_CHECK_LIB(fsp, fsp_open_session, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1346 if test "$HAVE_FSPLIB" = yes; then
1353 EL_ARG_DEPEND(CONFIG_FSP, fsp, [HAVE_FSPLIB:yes], [FSP protocol],
1354 [ --enable-fsp enable FSP protocol support])
1356 if test "x$CONFIG_FSP" = xno; then
1360 EL_ARG_ENABLE(CONFIG_FTP, ftp, [FTP protocol],
1361 [ --disable-ftp disable ftp protocol support])
1363 EL_ARG_ENABLE(CONFIG_GOPHER, gopher, [Gopher protocol],
1364 [ --enable-gopher enable gopher protocol support])
1366 EL_ARG_ENABLE(CONFIG_NNTP, nntp, [NNTP protocol],
1367 [ --enable-nntp enable nntp protocol support])
1369 # ===================================================================
1370 # SMB protocol support.
1371 # ===================================================================
1374 if test "x${enable_smb}" != xno; then
1375 AC_CHECK_HEADERS(libsmbclient.h, HAVE_SMBCLIENT=yes, HAVE_SMBCLIENT=no)
1377 if test "$HAVE_SMBCLIENT" = yes; then
1378 AC_CHECK_LIB(smbclient, smbc_init, HAVE_SMBCLIENT=yes, HAVE_SMBCLIENT=no)
1379 if test "$HAVE_SMBCLIENT" = yes; then
1380 LIBS="$LIBS -lsmbclient"
1385 EL_ARG_DEPEND(CONFIG_SMB, smb, [HAVE_SMBCLIENT:yes], [Samba protocol],
1386 [ --enable-smb enable Samba protocol support])
1388 if test "x$CONFIG_SMB" = xno; then
1393 EL_ARG_ENABLE(CONFIG_MOUSE, mouse, [Mouse handling],
1394 [ --disable-mouse disable mouse support])
1396 # GPM mouse is Linux specific, so ...
1398 EL_ARG_DEPEND(CONFIG_SYSMOUSE, sysmouse,
1399 [CONFIG_MOUSE:yes CONFIG_GPM:no HAVE_SYSMOUSE_HEADER:yes],
1401 [ --disable-sysmouse disable BSD sysmouse support])
1403 EL_ARG_ENABLE(CONFIG_88_COLORS, 88-colors, [88 colors],
1404 [ --enable-88-colors enable 88 color support])
1406 EL_ARG_ENABLE(CONFIG_256_COLORS, 256-colors, [256 colors],
1407 [ --enable-256-colors enable 256 color support])
1409 EL_ARG_ENABLE(CONFIG_TRUE_COLOR, true-color, [true color],
1410 [ --enable-true-color enable true color support])
1412 EL_ARG_ENABLE(CONFIG_EXMODE, exmode, [Exmode interface],
1413 [ --enable-exmode enable exmode (CLI) interface])
1415 EL_ARG_ENABLE(CONFIG_LEDS, leds, [LEDs],
1416 [ --disable-leds disable LEDs support])
1418 EL_ARG_ENABLE(CONFIG_MARKS, marks, [Marks],
1419 [ --disable-marks disable document marks support])
1422 EL_ARG_ENABLE(CONFIG_CSS, css, [Cascading Style Sheets],
1423 [ --disable-css disable Cascading Style Sheet support])
1425 EL_ARG_DEPEND(CONFIG_HTML_HIGHLIGHT, html-highlight, [CONFIG_CSS:yes], [HTML highlighting],
1426 [ --enable-html-highlight HTML highlighting using DOM engine])
1428 # Everything in the tree already uses CONFIG_DOM
1429 # so resolve CONFIG_HTML_HIGHLIGHT to CONFIG_DOM
1430 EL_CONFIG_DEPENDS(CONFIG_DOM, [CONFIG_HTML_HIGHLIGHT], [DOM engine])
1432 EL_ARG_DEPEND(CONFIG_BACKTRACE, backtrace, [HAVE_EXECINFO:yes], [Backtrace],
1433 [ --disable-backtrace disable backtrace support])
1435 EL_ARG_DEPEND(CONFIG_NO_ROOT_EXEC, no-root, [HAVE_GETUID:yes HAVE_GETEUID:yes], [No root exec],
1436 [ --enable-no-root enable prevention of usage by root])
1439 EL_ARG_ENABLE(CONFIG_DEBUG, debug, [Debug mode],
1440 [ --enable-debug enable leak debug and internal error checking])
1442 EL_ARG_DEPEND(CONFIG_FASTMEM, fastmem, [CONFIG_DEBUG:no], [Fast mode],
1443 [ --enable-fastmem enable direct use of system allocation functions, not usable with --enable-debug])
1445 EL_ARG_ENABLE(CONFIG_OWN_LIBC, own-libc, [Own libc stubs],
1446 [ --enable-own-libc force use of internal functions instead of those of system libc])
1448 EL_ARG_ENABLE(CONFIG_SMALL, small, [Small binary],
1449 [ --enable-small reduce binary size as far as possible (but see the bottom of doc/small.txt!)])
1451 EL_ARG_ENABLE(CONFIG_UTF8, utf-8, [UTF-8],
1452 [ --disable-utf-8 disable UTF-8 support])
1454 EL_ARG_DEPEND(CONFIG_COMBINE, combining, [CONFIG_UTF8:yes HAVE_WCWIDTH:yes], [Combining characters],
1455 [ --enable-combining support Unicode combining characters (experimental)])
1458 AC_ARG_ENABLE(weehoofooboomookerchoo,
1460 Also check out the features.conf file for more information about features!
1462 [AC_MSG_ERROR(Are you strange, or what?)])
1465 # ===================================================================
1466 # Decide whether to use TRE
1467 # ===================================================================
1469 # This must be done after the CONFIG_UTF8 check above.
1470 # The first part of the TRE check is separate, to get
1471 # the configure --help output in a sensible order.
1473 # After this section, nothing else must be added to the
1474 # beginning of $LIBS.
1476 if test "$tre_log" = "available"; then
1477 if test "$CONFIG_UTF8" = "yes"; then
1478 # When CONFIG_UTF8 and CONFIG_TRE are both defined,
1479 # src/viewer/text/search.c makes a string of
1480 # unicode_val_T and gives it to regwexec(), which
1481 # expects a string of wchar_t. If the unicode_val_T
1482 # and wchar_t types are too different, this won't
1483 # work, so try to detect that and disable regexp
1484 # operations entirely in that case.
1486 # Currently, this code only compares the sizes of the
1487 # types. src/intl/charsets.h defines unicode_val_T as
1488 # uint32_t, so we check whether wchar_t has exactly 32
1489 # bits. But don't use AC_CHECK_SIZEOF for this, because
1490 # there doesn't seem to be a documented way to get the
1491 # result of that for use in the configure script.
1493 # C99 says the implementation can define
1494 # __STDC_ISO_10646__ if wchar_t values match ISO 10646
1495 # (or Unicode) numbers in all locales. Do not check
1496 # that macro here, because it is too restrictive: it
1497 # should be enough for ELinks if the values match in
1498 # the locales where ELinks is actually run.
1499 AC_MSG_CHECKING([[whether wchar_t is exactly 32-bit]])
1500 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1503 int dummy[(sizeof(wchar_t) * CHAR_BIT == 32) ? 1 : -1];]], [])],
1504 [AC_MSG_RESULT([[yes]])
1506 [AC_MSG_RESULT([[no]])
1507 tre_log="no (unsuitable wchar_t)"])
1509 # If UTF-8 is not used, then wchar_t doesn't matter.
1514 if test "$tre_log" = "TRE"; then
1515 AC_DEFINE([CONFIG_TRE], [1],
1516 [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.])
1517 # TRE_CFLAGS will be used only where needed.
1519 # Bug 1081: If both TRE and libc define the regfree function,
1520 # ELinks needs to use the version defined by TRE because
1521 # that's the one compatible with regex_t initialized by the
1522 # regwcomp function of TRE. Therefore put $TRE_LIBS at the
1523 # very beginning of $LIBS so that the linker hopefully finds
1524 # regfree there before it examines libc. In particular,
1525 # $PERL_LIBS appears to often include "-lc".
1527 # This scheme still risks a crash if ELinks is linked with
1528 # some static library that uses GNU <regex.h> extensions that
1529 # TRE does not implement. For example, the library might call
1530 # re_compile_pattern, which is found in GNU libc, and then
1531 # regfree, which is found in TRE and probably crashes with the
1532 # GNU-initialized regex_t. Ways to avoid such crashes:
1534 # - Change TRE so it defines only tre_... functions and does
1535 # not attempt to override the POSIX names by default.
1537 # - Change ELinks to access TRE only via dlopen and dlsym.
1538 # The problem then is how to find the correct file name.
1539 # There might be libtre.so.4 and libtre.so.5 with different
1540 # ABI. How can this configure script detect which of them
1541 # matches the <tre/regex.h> in the include path?
1543 # - Replace the static library with a shared library. At
1544 # least on GNU/Linux, when the shared library is built, the
1545 # linker should note that e.g. regfree is defined in libc
1546 # and has the GLIBC_2.0 version there, and write that
1547 # version string to the shared library as well; because TRE
1548 # does not provide regfree with that version, any regfree
1549 # calls at run time should then get resolved to libc.
1550 LIBS="$TRE_LIBS $LIBS"
1555 AC_SUBST(TRE_CFLAGS)
1557 EL_LOG_CONFIG([CONFIG_TRE], [[Regexp searching]], [[$tre_log]])
1560 # ===================================================================
1561 # Further LDFLAGS tweaks
1562 # ===================================================================
1566 test "$CONFIG_OS_OS2" = yes && LDFLAGS="$LDFLAGS -Zexe"
1567 test "$CONFIG_OS_OS2" = yes && LDFLAGS=`echo "$LDFLAGS" | sed "s/-Zbin-files//g"`
1570 # Check for -rdynamic
1572 # gcc -rdynamic calls ld -export-dynamic, which adds all symbols of
1573 # the executable to its dynamic symbol table. ELinks uses this for
1576 # 1. If ELinks detects a bug, it can try to display a backtrace by
1577 # calling backtrace_symbols_fd() in the GNU libc. The glibc-2.3.6
1578 # manual states users of GNU ld must pass -rdynamic to make the
1579 # symbols available to the program.
1581 # 2. It would eventually be nice to dynamically load shared
1582 # libraries as plugins (bug 73). The plugins must be able to
1583 # call ELinks functions. This can be implemented either by
1584 # registering all callable functions in ELinks-specific data
1585 # structures, or by letting the dynamic linker handle them.
1586 # The latter way requires something equivalent to -rdynamic.
1588 # Because backtraces are not needed for correct operation, and bug
1589 # 73 is not yet being fixed, the configure script and makefiles
1590 # should not complain to the user if they find that -rdynamic does
1591 # not work. Besides, it was reported at elinks-users on 2006-09-12
1592 # that gcc-3.4.2 with "ld: Software Generation Utilities - Solaris
1593 # Link Editors: 5.8-1.284" on Sun Solaris 8 Sparc does not support
1594 # -rdynamic but does something equivalent automatically. (This was
1595 # tested with "nm -D elinks | grep redraw_from_window".)
1597 # With Sun Studio 11 on Solaris 9, we get "cc: Warning: illegal option
1598 # -dynamic"; then, cc proceeds anyway, but the option can prevent the
1599 # linker from finding the libraries listed in -l operands. So this
1600 # -rdynamic check needs to happen after the libraries have already
1601 # been added to $LDFLAGS.
1602 AC_MSG_CHECKING([for -rdynamic])
1603 LDFLAGS_X="$LDFLAGS"
1604 LDFLAGS="-rdynamic $LDFLAGS"
1605 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[have_rdynamic=yes],[have_rdynamic=no])
1606 test "$have_rdynamic" = no && LDFLAGS="$LDFLAGS_X"
1607 AC_MSG_RESULT($have_rdynamic)
1609 # ===================================================================
1610 # Export directory paths
1611 # ===================================================================
1613 # Set up the ``entry points'' if they were not supplied by builder
1614 test "x$prefix" = xNONE && prefix=$ac_default_prefix
1615 test "x$exec_prefix" = xNONE && exec_prefix=${prefix}
1617 # Create CONFDIR #define for config.h
1619 # XXX: This may be dependent on a particular version of autoconf. Whatever,
1620 # it's autoconf fault to force us to do such hacks ;p.
1621 if test x"$sysconfdir" = x"\${prefix}/etc"; then
1622 # sysconfdir is set to its default value... fine, let's append /elinks/
1623 # XXX: We can't modify listing of the default in ./configure --help :-(
1624 sysconfdir_n=`eval echo "$sysconfdir"`
1625 sysconfdir=$sysconfdir_n
1626 (echo "$sysconfdir" | grep elinks >/dev/null 2>/dev/null) || \
1627 sysconfdir="$sysconfdir/elinks"
1631 AC_DEFINE_UNQUOTED(CONFDIR, "$CONFDIR", [Directory containing default config])
1634 # Create LOCALEDIR #define for config.h
1635 LOCALEDIR=`eval echo "$datadir/locale"`
1636 while echo "$LOCALEDIR" | grep "\\$"
1638 LOCALEDIR=`eval echo "$LOCALEDIR"`
1639 done > /dev/null 2> /dev/null
1640 AC_DEFINE_UNQUOTED(LOCALEDIR, "$LOCALEDIR", [Directory containing locales])
1643 # Create LIBDIR #define for config.h
1644 LIBDIR=`eval echo "$libdir"`
1645 AC_DEFINE_UNQUOTED(LIBDIR, "$LIBDIR", [Directory containing libraries])
1648 EL_LOG_CONFIG(CONFDIR, [System configuration directory], [])
1649 EL_LOG_CONFIG(LOCALEDIR, [Locale catalogs directory], [])
1652 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
1653 ]], [[#if !defined(__TINYC__) || !defined(alloca)
1655 #endif ]])],[cf_result=yes],[cf_result=no])
1657 if test "$cf_result" = "yes"; then
1658 AC_DEFINE([HAVE_ALLOCA])
1659 AC_DEFINE([_ALLOCA_H], [1], [Define as 1 if you are using Tiny C Compiler
1660 with the GNU C Library, and <alloca.h> of glibc would otherwise
1661 override the alloca macro defined in <stddef.h> of TCC.
1662 If <alloca.h> of glibc sees the _ALLOCA_H macro, it assumes
1663 it has already been included, and does not redefine alloca.
1664 This might not work in future glibc versions though, because
1665 the names of the #include guard macros are not documented.
1666 The incompatibility has been reported to the tinycc-devel
1667 mailing list on 2008-07-14. If a future version of TCC provides
1668 an <alloca.h> of its own, this hack won't be needed.])
1670 # ===================================================================
1671 # A little fine tuning of gcc specific options (continued)
1672 # ===================================================================
1674 if test "x$ac_cv_c_compiler_gnu" = "xyes"; then
1675 if test "$CONFIG_DEBUG" = "yes"; then
1676 # We want to see all warnings and live with none (in debug mode).
1677 CFLAGS="$CFLAGS -Werror"
1680 case "`$CC -dumpversion`" in
1682 # These should be ok using -Werror
1685 # If gcc is version 3.3 (or higher?) it emits lots of false positive
1686 # "dereferencing type-punned pointer will break strict-aliasing rules"
1687 # warnings. Disable them by not doing any strict-aliasing. The
1688 # alternative is just too ugly. Thanks gcc guys!! ;)
1689 CFLAGS="$CFLAGS -fno-strict-aliasing"
1692 # Do not show warnings related to (char * | unsigned char *) type
1694 CFLAGS="$CFLAGS -fno-strict-aliasing -Wno-pointer-sign"
1697 # These should be ok using -Werror
1701 # GCC 4.2.1 warns if we use the address of an object in Boolean context:
1702 # warning: the address of `builtin_modules' will always evaluate as `true'
1703 # This hits the object_lock and foreach_module macros in particular.
1704 # It would be okay to put something in the macros to avoid the warning,
1705 # but currently this seems to require defining parallel macros that skip
1706 # the NULL check, and that's too ugly. So we instead disable the warning.
1707 # GCC 4.2.1 needs -Wno-address, but GCC 4.2 snapshots need -Wno-always-true.
1708 # GCC 4.1.3 recognizes neither and exits with code 1 if they are given.
1709 for warning_flag in -Wno-address -Wno-always-true; do
1710 AC_MSG_CHECKING([whether $CC accepts $warning_flag])
1712 CFLAGS="$CFLAGS $warning_flag"
1713 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1714 [AC_MSG_RESULT([yes])
1716 [AC_MSG_RESULT([no])])
1720 # Bug 1012: Some parts of ELinks do arithmetic with signed integers
1721 # in such a way that an overflow is possible. GCC 4.2.1 warns
1722 # "warning: assuming signed overflow does not occur when assuming
1723 # that (X + c) > X is always true", which may be an incorrect
1724 # optimization (although allowed by the standard), and breaks the
1725 # build with -Werror.
1727 # All of the following tests included -S -Wall -Wextra:
1729 # GCC: (GNU) 4.0.4 20060507 (prerelease) (Debian 4.0.3-3)
1730 # * gcc-4.0 -O0: OK, compares the values
1731 # * gcc-4.0 -O2: assumes no overflow, does not warn
1732 # * gcc-4.0 -O0 -fno-strict-overflow: unrecognized command line option
1733 # * gcc-4.0 -O0 -fwrapv: OK, compares the values
1734 # * gcc-4.0 -O2 -fwrapv: OK, compares the values
1735 # * gcc-4.0 -O0 -ftrapv: OK, calls __addvsi3
1736 # * gcc-4.0 -O2 -ftrapv: assumes no overflow, does not warn
1737 # * gcc-4.0 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1738 # * gcc-4.0 -O2 -fwrapv -ftrapv: compares the values
1740 # GCC: (GNU) 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)
1741 # * gcc-4.1 -O0: assumes no overflow, does not warn
1742 # * gcc-4.1 -O2: assumes no overflow, does not warn
1743 # * gcc-4.1 -O0 -fno-strict-overflow: unrecognized command line option
1744 # * gcc-4.1 -O0 -fwrapv: OK, compares the values
1745 # * gcc-4.1 -O2 -fwrapv: OK, compares the values
1746 # * gcc-4.1 -O0 -ftrapv: OK, calls __addvsi3
1747 # * gcc-4.1 -O2 -ftrapv: compares the values
1748 # * gcc-4.1 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1749 # * gcc-4.1 -O2 -fwrapv -ftrapv: compares the values
1751 # GCC: (GNU) 4.2.1 (Debian 4.2.1-5)
1752 # * gcc-4.2 -O0: OK, compares the values
1753 # * gcc-4.2 -O2: assumes no overflow, warns about it
1754 # * gcc-4.2 -O0 -fno-strict-overflow: OK, compares the values
1755 # * gcc-4.2 -O2 -fno-strict-overflow: OK, compares the values
1756 # * gcc-4.2 -O0 -fwrapv: OK, compares the values
1757 # * gcc-4.2 -O2 -fwrapv: OK, compares the values
1758 # * gcc-4.2 -O0 -ftrapv: OK, calls __addvsi3
1759 # * gcc-4.2 -O2 -ftrapv: compares the values
1760 # * gcc-4.2 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1761 # * gcc-4.2 -O2 -fwrapv -ftrapv: compares the values
1763 # Apparently, -ftrapv does not work reliably at all.
1764 for overflow_flag in -fno-strict-overflow -fwrapv; do
1765 AC_MSG_CHECKING([whether $CC accepts $overflow_flag])
1767 CFLAGS="$CFLAGS $overflow_flag"
1768 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1769 [AC_MSG_RESULT([yes])
1771 [AC_MSG_RESULT([no])])
1776 EL_LOG_CONFIG(CFLAGS, [Compiler flags (CFLAGS)], [])
1777 EL_LOG_CONFIG(CPPFLAGS, [Preprocessor flags (CPPFLAGS)], [])
1778 EL_LOG_CONFIG(LDFLAGS, [Linker flags (LDFLAGS)], [])
1779 EL_LOG_CONFIG(LIBS, [Library flags (LIBS)], [])
1781 # ===================================================================
1782 # Colored make output
1783 # ===================================================================
1785 if test $(`which tput` colors) -ge 4; then
1787 AC_SUBST(MAKE_COLOR)
1790 # ===================================================================
1792 # ===================================================================
1796 contrib/elinks.spec \
1797 contrib/lua/hooks.lua \
1798 contrib/conv/w3m2links.awk \
1800 doc/man/man1/elinks.1 \
1801 src/intl/gettext/ref-add.sed \
1802 src/intl/gettext/ref-del.sed
1806 abs_srcdir="$(cd "$srcdir" && pwd)"
1807 # builddir is always absolute!
1808 if test "$abs_srcdir" != "$builddir"; then
1809 # Bootstrap the Makefile creation
1810 echo "include $abs_srcdir/Makefile" > "$builddir/Makefile"
1811 "$MAKE" "SRC=$abs_srcdir" init
1813 # Make cg-status ignore this build directory
1814 echo "*" > "$builddir/.gitignore"
1817 # ===================================================================
1818 # Configuration summary
1819 # ===================================================================
1821 AC_MSG_RESULT(The following feature summary has been saved to features.log)