| blob | deeb968daa07355b729d178644c843c7a0ed62c5 |
1 # -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
4 ## Definitions of private macros.
6 # GIT_CONF_SUBST(VAL, VAR)
7 # ------------------------
8 # Cause the line "VAR=VAL" to be eventually appended to ${config_file}.
9 AC_DEFUN([GIT_CONF_SUBST],
10 [AC_REQUIRE([GIT_CONF_SUBST_INIT])
11 config_appended_defs="$config_appended_defs${newline}dnl
12 $1=m4_if([$#],[1],[${$1}],[$2])"])
14 # GIT_CONF_SUBST_INIT
15 # -------------------
16 # Prepare shell variables and autoconf machine required by later calls
17 # to GIT_CONF_SUBST.
18 AC_DEFUN([GIT_CONF_SUBST_INIT],
19 [config_appended_defs=; newline='
20 '
21 AC_CONFIG_COMMANDS([$config_file],
22 [echo "$config_appended_defs" >> "$config_file"],
23 [config_file=$config_file
24 config_appended_defs="$config_appended_defs"])])
26 # GIT_ARG_SET_PATH(PROGRAM)
27 # -------------------------
28 # Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
29 # Optional second argument allows setting NO_PROGRAM=YesPlease if
30 # --without-PROGRAM version used.
31 AC_DEFUN([GIT_ARG_SET_PATH],
32 [AC_ARG_WITH([$1],
33 [AS_HELP_STRING([--with-$1=PATH],
34 [provide PATH to $1])],
35 [GIT_CONF_APPEND_PATH([$1], [$2])],
36 [])])
38 # GIT_CONF_APPEND_PATH(PROGRAM)
39 # -----------------------------
40 # Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
41 # Used by GIT_ARG_SET_PATH(PROGRAM)
42 # Optional second argument allows setting NO_PROGRAM=YesPlease if
43 # --without-PROGRAM is used.
44 AC_DEFUN([GIT_CONF_APPEND_PATH],
45 [m4_pushdef([GIT_UC_PROGRAM], m4_toupper([$1]))dnl
46 if test "$withval" = "no"; then
47 if test -n "$2"; then
48 GIT_UC_PROGRAM[]_PATH=$withval
49 AC_MSG_NOTICE([Disabling use of GIT_UC_PROGRAM])
50 GIT_CONF_SUBST([NO_]GIT_UC_PROGRAM, [YesPlease])
51 GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [])
52 else
53 AC_MSG_ERROR([You cannot use git without $1])
54 fi
55 else
56 if test "$withval" = "yes"; then
57 AC_MSG_WARN([You should provide path for --with-$1=PATH])
58 else
59 GIT_UC_PROGRAM[]_PATH=$withval
60 AC_MSG_NOTICE([Setting GIT_UC_PROGRAM[]_PATH to $withval])
61 GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [$withval])
62 fi
63 fi
64 m4_popdef([GIT_UC_PROGRAM])])
66 # GIT_PARSE_WITH(PACKAGE)
67 # -----------------------
68 # For use in AC_ARG_WITH action-if-found, for packages default ON.
69 # * Set NO_PACKAGE=YesPlease for --without-PACKAGE
70 # * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
71 # * Unset NO_PACKAGE for --with-PACKAGE without ARG
72 AC_DEFUN([GIT_PARSE_WITH],
73 [m4_pushdef([GIT_UC_PACKAGE], m4_toupper([$1]))dnl
74 if test "$withval" = "no"; then
75 NO_[]GIT_UC_PACKAGE=YesPlease
76 elif test "$withval" = "yes"; then
77 NO_[]GIT_UC_PACKAGE=
78 else
79 NO_[]GIT_UC_PACKAGE=
80 GIT_UC_PACKAGE[]DIR=$withval
81 AC_MSG_NOTICE([Setting GIT_UC_PACKAGE[]DIR to $withval])
82 GIT_CONF_SUBST(GIT_UC_PACKAGE[DIR], [$withval])
83 fi
84 m4_popdef([GIT_UC_PACKAGE])])
86 # GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT)
87 # -----------------------------------------------------
88 # Set VAR to the value specied by --with-WITHNAME.
89 # No verification of arguments is performed, but warnings are issued
90 # if either 'yes' or 'no' is specified.
91 # HELP_TEXT is presented when --help is called.
92 # This is a direct way to allow setting variables in the Makefile.
93 AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR],
94 [AC_ARG_WITH([$1],
95 [AS_HELP_STRING([--with-$1=VALUE], $3)],
96 if test -n "$withval"; then
97 if test "$withval" = "yes" -o "$withval" = "no"; then
98 AC_MSG_WARN([You likely do not want either 'yes' or 'no' as]
99 [a value for $1 ($2). Maybe you do...?])
100 fi
101 AC_MSG_NOTICE([Setting $2 to $withval])
102 GIT_CONF_SUBST([$2], [$withval])
103 fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
105 #
106 # GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
107 # -----------------------------------------
108 # Similar to AC_CHECK_FUNC, but on systems that do not generate
109 # warnings for missing prototypes (e.g. FreeBSD when compiling without
110 # -Wall), it does not work. By looking for function definition in
111 # libraries, this problem can be worked around.
112 AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
113 AC_SEARCH_LIBS([$1],,
114 [$2],[$3])
115 ],[$3])])
117 #
118 # GIT_STASH_FLAGS(BASEPATH_VAR)
119 # -----------------------------
120 # Allow for easy stashing of LDFLAGS and CPPFLAGS before running
121 # tests that may want to take user settings into account.
122 AC_DEFUN([GIT_STASH_FLAGS],[
123 if test -n "$1"; then
124 old_CPPFLAGS="$CPPFLAGS"
125 old_LDFLAGS="$LDFLAGS"
126 CPPFLAGS="-I$1/include $CPPFLAGS"
127 LDFLAGS="-L$1/$lib $LDFLAGS"
128 fi
129 ])
131 dnl
132 dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
133 dnl -----------------------------
134 dnl Restore the stashed *FLAGS values.
135 AC_DEFUN([GIT_UNSTASH_FLAGS],[
136 if test -n "$1"; then
137 CPPFLAGS="$old_CPPFLAGS"
138 LDFLAGS="$old_LDFLAGS"
139 fi
140 ])
142 ## Configure body starts here.
144 AC_PREREQ(2.59)
145 AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
147 AC_CONFIG_SRCDIR([git.c])
149 config_file=config.mak.autogen
150 config_in=config.mak.in
152 GIT_CONF_SUBST([AUTOCONFIGURED], [YesPlease])
154 # Directories holding "saner" versions of common or POSIX binaries.
155 AC_ARG_WITH([sane-tool-path],
156 [AS_HELP_STRING(
157 [--with-sane-tool-path=DIR-1[[:DIR-2...:DIR-n]]],
158 [Directories to prepend to PATH in build system and generated scripts])],
159 [if test "$withval" = "no"; then
160 withval=''
161 else
162 AC_MSG_NOTICE([Setting SANE_TOOL_PATH to '$withval'])
163 fi
164 GIT_CONF_SUBST([SANE_TOOL_PATH], [$withval])],
165 [# If the "--with-sane-tool-path" option was not given, don't touch
166 # SANE_TOOL_PATH here, but let defaults in Makefile take care of it.
167 # This should minimize spurious differences in the behaviour of the
168 # Git build system when configure is used w.r.t. when it is not.
169 :])
171 ## Site configuration related to programs (before tests)
172 ## --with-PACKAGE[=ARG] and --without-PACKAGE
173 #
174 # Set lib to alternative name of lib directory (e.g. lib64)
175 AC_ARG_WITH([lib],
176 [AS_HELP_STRING([--with-lib=ARG],
177 [ARG specifies alternative name for lib directory])],
178 [if test "$withval" = "no" || test "$withval" = "yes"; then
179 AC_MSG_WARN([You should provide name for --with-lib=ARG])
180 else
181 lib=$withval
182 AC_MSG_NOTICE([Setting lib to '$lib'])
183 GIT_CONF_SUBST([lib])
184 fi])
186 if test -z "$lib"; then
187 AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
188 lib=lib
189 fi
191 AC_ARG_ENABLE([pthreads],
192 [AS_HELP_STRING([--enable-pthreads=FLAGS],
193 [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
194 [The default if FLAGS is not specified is to try first -pthread]
195 [and then -lpthread.]
196 [--disable-pthreads will disable threading.])],
197 [
198 if test "x$enableval" = "xyes"; then
199 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
200 elif test "x$enableval" != "xno"; then
201 PTHREAD_CFLAGS=$enableval
202 AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
203 else
204 AC_MSG_NOTICE([POSIX Threads will be disabled.])
205 NO_PTHREADS=YesPlease
206 USER_NOPTHREAD=1
207 fi],
208 [
209 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
210 ])
212 # Define option to enable JavaScript minification
213 AC_ARG_ENABLE([jsmin],
214 [AS_HELP_STRING([--enable-jsmin=PATH],
215 [PATH is the name of a JavaScript minifier or the absolute path to one.])],
216 [
217 JSMIN=$enableval;
218 AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying])
219 GIT_CONF_SUBST([JSMIN])
220 ])
222 # Define option to enable CSS minification
223 AC_ARG_ENABLE([cssmin],
224 [AS_HELP_STRING([--enable-cssmin=PATH],
225 [PATH is the name of a CSS minifier or the absolute path to one.])],
226 [
227 CSSMIN=$enableval;
228 AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying])
229 GIT_CONF_SUBST([CSSMIN])
230 ])
232 ## Site configuration (override autodetection)
233 ## --with-PACKAGE[=ARG] and --without-PACKAGE
234 AC_MSG_NOTICE([CHECKS for site configuration])
235 #
236 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
237 # tests. These tests take up a significant amount of the total test time
238 # but are not needed unless you plan to talk to SVN repos.
239 #
240 # Define PPC_SHA1 environment variable when running make to make use of
241 # a bundled SHA1 routine optimized for PowerPC.
242 #
243 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
244 # This also implies BLK_SHA1.
245 #
246 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
247 # /foo/bar/include and /foo/bar/lib directories.
248 AC_ARG_WITH(openssl,
249 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
250 AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),
251 GIT_PARSE_WITH([openssl]))
253 # Define USE_LIBPCRE if you have and want to use libpcre. Various
254 # commands such as log and grep offer runtime options to use
255 # Perl-compatible regular expressions instead of standard or extended
256 # POSIX regular expressions.
257 #
258 # Define LIBPCREDIR=/foo/bar if your libpcre header and library files are in
259 # /foo/bar/include and /foo/bar/lib directories.
260 #
261 AC_ARG_WITH(libpcre,
262 AS_HELP_STRING([--with-libpcre],[support Perl-compatible regexes (default is NO)])
263 AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]),
264 if test "$withval" = "no"; then
265 USE_LIBPCRE=
266 elif test "$withval" = "yes"; then
267 USE_LIBPCRE=YesPlease
268 else
269 USE_LIBPCRE=YesPlease
270 LIBPCREDIR=$withval
271 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
272 dnl USE_LIBPCRE can still be modified below, so don't substitute
273 dnl it yet.
274 GIT_CONF_SUBST([LIBPCREDIR])
275 fi)
276 #
277 # Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header.
278 AC_FUNC_ALLOCA
279 case $ac_cv_working_alloca_h in
280 yes) HAVE_ALLOCA_H=YesPlease;;
281 *) HAVE_ALLOCA_H='';;
282 esac
283 GIT_CONF_SUBST([HAVE_ALLOCA_H])
284 #
285 # Define NO_CURL if you do not have curl installed. git-http-pull and
286 # git-http-push are not built, and you cannot use http:// and https://
287 # transports.
288 #
289 # Define CURLDIR=/foo/bar if your curl header and library files are in
290 # /foo/bar/include and /foo/bar/lib directories.
291 AC_ARG_WITH(curl,
292 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
293 AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
294 GIT_PARSE_WITH(curl))
295 #
296 # Define NO_EXPAT if you do not have expat installed. git-http-push is
297 # not built, and you cannot push using http:// and https:// transports.
298 #
299 # Define EXPATDIR=/foo/bar if your expat header and library files are in
300 # /foo/bar/include and /foo/bar/lib directories.
301 AC_ARG_WITH(expat,
302 AS_HELP_STRING([--with-expat],
303 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
304 AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
305 GIT_PARSE_WITH(expat))
306 #
307 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
308 # installed in /sw, but don't want GIT to link against any libraries
309 # installed there. If defined you may specify your own (or Fink's)
310 # include directories and library directories by defining CFLAGS
311 # and LDFLAGS appropriately.
312 #
313 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
314 # have DarwinPorts installed in /opt/local, but don't want GIT to
315 # link against any libraries installed there. If defined you may
316 # specify your own (or DarwinPort's) include directories and
317 # library directories by defining CFLAGS and LDFLAGS appropriately.
318 #
319 # Define NO_MMAP if you want to avoid mmap.
320 #
321 # Define NO_ICONV if your libc does not properly support iconv.
322 AC_ARG_WITH(iconv,
323 AS_HELP_STRING([--without-iconv],
324 [if your architecture doesn't properly support iconv])
325 AS_HELP_STRING([--with-iconv=PATH],
326 [PATH is prefix for libiconv library and headers])
327 AS_HELP_STRING([],
328 [used only if you need linking with libiconv]),
329 GIT_PARSE_WITH(iconv))
331 ## --enable-FEATURE[=ARG] and --disable-FEATURE
332 #
333 # Define USE_NSEC below if you want git to care about sub-second file mtimes
334 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
335 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
336 # randomly break unless your underlying filesystem supports those sub-second
337 # times (my ext3 doesn't).
338 #
339 # Define USE_STDEV below if you want git to care about the underlying device
340 # change being considered an inode change from the update-index perspective.
342 #
343 # Allow user to set ETC_GITCONFIG variable
344 GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
345 Use VALUE instead of /etc/gitconfig as the
346 global git configuration file.
347 If VALUE is not fully qualified it will be interpreted
348 as a path relative to the computed prefix at runtime.)
350 #
351 # Allow user to set ETC_GITATTRIBUTES variable
352 GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
353 Use VALUE instead of /etc/gitattributes as the
354 global git attributes file.
355 If VALUE is not fully qualified it will be interpreted
356 as a path relative to the computed prefix at runtime.)
358 #
359 # Allow user to set the default pager
360 GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
361 Use VALUE as the fall-back pager instead of 'less'.
362 This is used by things like 'git log' when the user
363 does not specify a pager to use through alternate
364 methods. eg: /usr/bin/pager)
365 #
366 # Allow user to set the default editor
367 GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
368 Use VALUE as the fall-back editor instead of 'vi'.
369 This is used by things like 'git commit' when the user
370 does not specify a preferred editor through other
371 methods. eg: /usr/bin/editor)
373 #
374 # Define SHELL_PATH to provide path to shell.
375 GIT_ARG_SET_PATH(shell)
376 #
377 # Define PERL_PATH to provide path to Perl.
378 GIT_ARG_SET_PATH(perl)
379 #
380 # Define PYTHON_PATH to provide path to Python.
381 GIT_ARG_SET_PATH(python, allow-without)
382 #
383 # Define ZLIB_PATH to provide path to zlib.
384 GIT_ARG_SET_PATH(zlib)
385 #
386 # Declare the with-tcltk/without-tcltk options.
387 AC_ARG_WITH(tcltk,
388 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
389 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
390 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
391 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
392 GIT_PARSE_WITH(tcltk))
393 #
396 ## Checks for programs.
397 AC_MSG_NOTICE([CHECKS for programs])
398 #
399 AC_PROG_CC([cc gcc])
400 AC_C_INLINE
401 case $ac_cv_c_inline in
402 inline | yes | no) INLINE='';;
403 *) INLINE=$ac_cv_c_inline ;;
404 esac
405 GIT_CONF_SUBST([INLINE])
407 # which switch to pass runtime path to dynamic libraries to the linker
408 AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
409 SAVE_LDFLAGS="${LDFLAGS}"
410 LDFLAGS="${SAVE_LDFLAGS} -R /"
411 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
412 LDFLAGS="${SAVE_LDFLAGS}"
413 ])
414 if test "$git_cv_ld_dashr" = "yes"; then
415 CC_LD_DYNPATH=-R
416 else
417 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
418 SAVE_LDFLAGS="${LDFLAGS}"
419 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
420 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
421 LDFLAGS="${SAVE_LDFLAGS}"
422 ])
423 if test "$git_cv_ld_wl_rpath" = "yes"; then
424 CC_LD_DYNPATH=-Wl,-rpath,
425 else
426 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
427 SAVE_LDFLAGS="${LDFLAGS}"
428 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
429 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
430 LDFLAGS="${SAVE_LDFLAGS}"
431 ])
432 if test "$git_cv_ld_rpath" = "yes"; then
433 CC_LD_DYNPATH=-rpath
434 else
435 CC_LD_DYNPATH=
436 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
437 fi
438 fi
439 fi
440 GIT_CONF_SUBST([CC_LD_DYNPATH])
441 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
442 AC_CHECK_TOOLS(AR, [gar ar], :)
443 AC_CHECK_PROGS(TAR, [gtar tar])
444 AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
445 # TCLTK_PATH will be set to some value if we want Tcl/Tk
446 # or will be empty otherwise.
447 if test -n "$NO_TCLTK"; then
448 TCLTK_PATH=
449 else
450 if test "$with_tcltk" = ""; then
451 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
452 TCLTK_PATH=wish
453 elif test "$with_tcltk" = "yes"; then
454 # Tcl/Tk check requested.
455 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
456 else
457 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
458 TCLTK_PATH="$with_tcltk"
459 fi
460 fi
461 GIT_CONF_SUBST([TCLTK_PATH])
462 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
463 if test -n "$ASCIIDOC"; then
464 AC_MSG_CHECKING([for asciidoc version])
465 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
466 case "${asciidoc_version}" in
467 asciidoc' '8*)
468 AC_MSG_RESULT([${asciidoc_version}])
469 ;;
470 *)
471 AC_MSG_RESULT([${asciidoc_version} (unknown)])
472 ;;
473 esac
474 fi
476 if grep -a ascii configure.ac >/dev/null; then
477 AC_MSG_RESULT([Using 'grep -a' for sane_grep])
478 SANE_TEXT_GREP=-a
479 else
480 SANE_TEXT_GREP=
481 fi
482 GIT_CONF_SUBST([SANE_TEXT_GREP])
484 ## Checks for libraries.
485 AC_MSG_NOTICE([CHECKS for libraries])
486 #
487 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
488 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
490 GIT_STASH_FLAGS($OPENSSLDIR)
492 AC_CHECK_LIB([crypto], [SHA1_Init],
493 [NEEDS_SSL_WITH_CRYPTO=],
494 [AC_CHECK_LIB([ssl], [SHA1_Init],
495 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=],
496 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
498 GIT_UNSTASH_FLAGS($OPENSSLDIR)
500 GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO])
501 GIT_CONF_SUBST([NO_OPENSSL])
503 #
504 # Define USE_LIBPCRE if you have and want to use libpcre. Various
505 # commands such as log and grep offer runtime options to use
506 # Perl-compatible regular expressions instead of standard or extended
507 # POSIX regular expressions.
508 #
510 if test -n "$USE_LIBPCRE"; then
512 GIT_STASH_FLAGS($LIBPCREDIR)
514 AC_CHECK_LIB([pcre], [pcre_version],
515 [USE_LIBPCRE=YesPlease],
516 [USE_LIBPCRE=])
518 GIT_UNSTASH_FLAGS($LIBPCREDIR)
520 GIT_CONF_SUBST([USE_LIBPCRE])
522 fi
524 #
525 # Define NO_CURL if you do not have libcurl installed. git-http-pull and
526 # git-http-push are not built, and you cannot use http:// and https://
527 # transports.
529 GIT_STASH_FLAGS($CURLDIR)
531 AC_CHECK_LIB([curl], [curl_global_init],
532 [NO_CURL=],
533 [NO_CURL=YesPlease])
535 GIT_UNSTASH_FLAGS($CURLDIR)
537 GIT_CONF_SUBST([NO_CURL])
539 if test -z "$NO_CURL"; then
541 AC_CHECK_PROG([CURL_CONFIG], [curl-config],
542 [curl-config],
543 [no])
545 if test $CURL_CONFIG != no; then
546 GIT_CONF_SUBST([CURL_CONFIG])
547 if test -z "${NO_OPENSSL}"; then
548 AC_MSG_CHECKING([if Curl supports SSL])
549 if test $(curl-config --features|grep SSL) = SSL; then
550 NEEDS_SSL_WITH_CURL=YesPlease
551 AC_MSG_RESULT([yes])
552 else
553 NEEDS_SSL_WITH_CURL=
554 AC_MSG_RESULT([no])
555 fi
556 GIT_CONF_SUBST([NEEDS_SSL_WITH_CURL])
557 fi
558 fi
560 fi
563 #
564 # Define NO_EXPAT if you do not have expat installed. git-http-push is
565 # not built, and you cannot push using http:// and https:// transports.
567 GIT_STASH_FLAGS($EXPATDIR)
569 AC_CHECK_LIB([expat], [XML_ParserCreate],
570 [NO_EXPAT=],
571 [NO_EXPAT=YesPlease])
573 GIT_UNSTASH_FLAGS($EXPATDIR)
575 GIT_CONF_SUBST([NO_EXPAT])
577 #
578 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
579 # some Solaris installations).
580 # Define NO_ICONV if neither libc nor libiconv support iconv.
582 if test -z "$NO_ICONV"; then
584 GIT_STASH_FLAGS($ICONVDIR)
586 AC_DEFUN([ICONVTEST_SRC],
587 [AC_LANG_PROGRAM([#include <iconv.h>],
588 [iconv_open("", "");])])
590 if test -n "$ICONVDIR"; then
591 lib_order="-liconv -lc"
592 else
593 lib_order="-lc -liconv"
594 fi
596 NO_ICONV=YesPlease
598 for l in $lib_order; do
599 if test "$l" = "-liconv"; then
600 NEEDS_LIBICONV=YesPlease
601 else
602 NEEDS_LIBICONV=
603 fi
605 old_LIBS="$LIBS"
606 LIBS="$LIBS $l"
607 AC_MSG_CHECKING([for iconv in $l])
608 AC_LINK_IFELSE([ICONVTEST_SRC],
609 [AC_MSG_RESULT([yes])
610 NO_ICONV=
611 break],
612 [AC_MSG_RESULT([no])])
613 LIBS="$old_LIBS"
614 done
616 #in case of break
617 LIBS="$old_LIBS"
619 GIT_UNSTASH_FLAGS($ICONVDIR)
621 GIT_CONF_SUBST([NEEDS_LIBICONV])
622 GIT_CONF_SUBST([NO_ICONV])
624 if test -n "$NO_ICONV"; then
625 NEEDS_LIBICONV=
626 fi
628 fi
630 #
631 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
633 GIT_STASH_FLAGS($ZLIB_PATH)
635 AC_DEFUN([ZLIBTEST_SRC], [
636 AC_LANG_PROGRAM([#include <zlib.h>],
637 [deflateBound(0, 0);])])
638 AC_MSG_CHECKING([for deflateBound in -lz])
639 old_LIBS="$LIBS"
640 LIBS="$LIBS -lz"
641 AC_LINK_IFELSE([ZLIBTEST_SRC],
642 [AC_MSG_RESULT([yes])],
643 [AC_MSG_RESULT([no])
644 NO_DEFLATE_BOUND=yes])
645 LIBS="$old_LIBS"
647 GIT_UNSTASH_FLAGS($ZLIB_PATH)
649 GIT_CONF_SUBST([NO_DEFLATE_BOUND])
651 #
652 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
653 # Patrick Mauritz).
654 AC_CHECK_LIB([c], [socket],
655 [NEEDS_SOCKET=],
656 [NEEDS_SOCKET=YesPlease])
657 GIT_CONF_SUBST([NEEDS_SOCKET])
658 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
660 #
661 # The next few tests will define NEEDS_RESOLV if linking with
662 # libresolv provides some of the functions we would normally get
663 # from libc.
664 NEEDS_RESOLV=
665 #
666 # Define NO_INET_NTOP if linking with -lresolv is not enough.
667 # Solaris 2.7 in particular hos inet_ntop in -lresolv.
668 NO_INET_NTOP=
669 AC_CHECK_FUNC([inet_ntop],
670 [],
671 [AC_CHECK_LIB([resolv], [inet_ntop],
672 [NEEDS_RESOLV=YesPlease],
673 [NO_INET_NTOP=YesPlease])
674 ])
675 GIT_CONF_SUBST([NO_INET_NTOP])
676 #
677 # Define NO_INET_PTON if linking with -lresolv is not enough.
678 # Solaris 2.7 in particular hos inet_pton in -lresolv.
679 NO_INET_PTON=
680 AC_CHECK_FUNC([inet_pton],
681 [],
682 [AC_CHECK_LIB([resolv], [inet_pton],
683 [NEEDS_RESOLV=YesPlease],
684 [NO_INET_PTON=YesPlease])
685 ])
686 GIT_CONF_SUBST([NO_INET_PTON])
687 #
688 # Define NO_HSTRERROR if linking with -lresolv is not enough.
689 # Solaris 2.6 in particular has no hstrerror, even in -lresolv.
690 NO_HSTRERROR=
691 AC_CHECK_FUNC([hstrerror],
692 [],
693 [AC_CHECK_LIB([resolv], [hstrerror],
694 [NEEDS_RESOLV=YesPlease],
695 [NO_HSTRERROR=YesPlease])
696 ])
697 GIT_CONF_SUBST([NO_HSTRERROR])
699 dnl This must go after all the possible places for its initialization,
700 dnl in the AC_CHECK_FUNC invocations above.
701 GIT_CONF_SUBST([NEEDS_RESOLV])
702 #
703 # If any of the above tests determined that -lresolv is needed at
704 # build-time, also set it here for remaining configure-time checks.
705 test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
707 AC_CHECK_LIB([c], [basename],
708 [NEEDS_LIBGEN=],
709 [NEEDS_LIBGEN=YesPlease])
710 GIT_CONF_SUBST([NEEDS_LIBGEN])
711 test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
713 AC_CHECK_LIB([c], [gettext],
714 [LIBC_CONTAINS_LIBINTL=YesPlease],
715 [LIBC_CONTAINS_LIBINTL=])
716 GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL])
718 #
719 # Define NO_GETTEXT if you don't want Git output to be translated.
720 # A translated Git requires GNU libintl or another gettext implementation
721 AC_CHECK_HEADER([libintl.h],
722 [NO_GETTEXT=],
723 [NO_GETTEXT=YesPlease])
724 GIT_CONF_SUBST([NO_GETTEXT])
726 if test -z "$NO_GETTEXT"; then
727 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
728 fi
730 ## Checks for header files.
731 AC_MSG_NOTICE([CHECKS for header files])
732 #
733 # Define NO_SYS_SELECT_H if you don't have sys/select.h.
734 AC_CHECK_HEADER([sys/select.h],
735 [NO_SYS_SELECT_H=],
736 [NO_SYS_SELECT_H=UnfortunatelyYes])
737 GIT_CONF_SUBST([NO_SYS_SELECT_H])
738 #
739 # Define NO_SYS_POLL_H if you don't have sys/poll.h
740 AC_CHECK_HEADER([sys/poll.h],
741 [NO_SYS_POLL_H=],
742 [NO_SYS_POLL_H=UnfortunatelyYes])
743 GIT_CONF_SUBST([NO_SYS_POLL_H])
744 #
745 # Define NO_INTTYPES_H if you don't have inttypes.h
746 AC_CHECK_HEADER([inttypes.h],
747 [NO_INTTYPES_H=],
748 [NO_INTTYPES_H=UnfortunatelyYes])
749 GIT_CONF_SUBST([NO_INTTYPES_H])
750 #
751 # Define OLD_ICONV if your library has an old iconv(), where the second
752 # (input buffer pointer) parameter is declared with type (const char **).
753 AC_DEFUN([OLDICONVTEST_SRC], [
754 AC_LANG_PROGRAM([[
755 #include <iconv.h>
757 extern size_t iconv(iconv_t cd,
758 char **inbuf, size_t *inbytesleft,
759 char **outbuf, size_t *outbytesleft);
760 ]], [])])
762 GIT_STASH_FLAGS($ICONVDIR)
764 AC_MSG_CHECKING([for old iconv()])
765 AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
766 [AC_MSG_RESULT([no])],
767 [AC_MSG_RESULT([yes])
768 OLD_ICONV=UnfortunatelyYes])
770 GIT_UNSTASH_FLAGS($ICONVDIR)
772 GIT_CONF_SUBST([OLD_ICONV])
774 ## Checks for typedefs, structures, and compiler characteristics.
775 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
776 #
777 TYPE_SOCKLEN_T
778 case $ac_cv_type_socklen_t in
779 yes) SOCKLEN_T='';;
780 *) SOCKLEN_T=$git_cv_socklen_t_equiv;;
781 esac
782 GIT_CONF_SUBST([SOCKLEN_T])
784 #
785 # Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval.
786 AC_CHECK_TYPES([struct itimerval],
787 [NO_STRUCT_ITIMERVAL=],
788 [NO_STRUCT_ITIMERVAL=UnfortunatelyYes],
789 [#include <sys/time.h>])
790 GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL])
791 #
792 # Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists.
793 # Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor
794 # stat.st_mtimespec.tv_nsec exists.
795 AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec])
796 AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec])
797 if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then
798 USE_ST_TIMESPEC=YesPlease
799 GIT_CONF_SUBST([USE_ST_TIMESPEC])
800 elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then
801 NO_NSEC=YesPlease
802 GIT_CONF_SUBST([NO_NSEC])
803 fi
804 #
805 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
806 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
807 AC_CHECK_MEMBER(struct dirent.d_type,
808 [NO_D_TYPE_IN_DIRENT=],
809 [NO_D_TYPE_IN_DIRENT=YesPlease],
810 [#include <dirent.h>])
811 GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT])
812 #
813 # Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd
814 # in the C library.
815 AC_CHECK_MEMBER(struct passwd.pw_gecos,
816 [NO_GECOS_IN_PWENT=],
817 [NO_GECOS_IN_PWENT=YesPlease],
818 [#include <pwd.h>])
819 GIT_CONF_SUBST([NO_GECOS_IN_PWENT])
820 #
821 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
822 # sockaddr_storage.
823 AC_CHECK_TYPE(struct sockaddr_storage,
824 [NO_SOCKADDR_STORAGE=],
825 [NO_SOCKADDR_STORAGE=YesPlease],[
826 #include <sys/types.h>
827 #include <sys/socket.h>
828 ])
829 GIT_CONF_SUBST([NO_SOCKADDR_STORAGE])
830 #
831 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
832 AC_CHECK_TYPE([struct addrinfo],[
833 GIT_CHECK_FUNC([getaddrinfo],
834 [NO_IPV6=],
835 [NO_IPV6=YesPlease])
836 ],[NO_IPV6=YesPlease],[
837 #include <sys/types.h>
838 #include <sys/socket.h>
839 #include <netdb.h>
840 ])
841 GIT_CONF_SUBST([NO_IPV6])
842 #
843 # Define NO_REGEX if your C library lacks regex support with REG_STARTEND
844 # feature.
845 AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND],
846 [ac_cv_c_regex_with_reg_startend], [
847 AC_EGREP_CPP(yippeeyeswehaveit,
848 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
849 #include <regex.h>
850 ],
851 [#ifdef REG_STARTEND
852 yippeeyeswehaveit
853 #endif
854 ]),
855 [ac_cv_c_regex_with_reg_startend=yes],
856 [ac_cv_c_regex_with_reg_startend=no])
857 ])
858 if test $ac_cv_c_regex_with_reg_startend = yes; then
859 NO_REGEX=
860 else
861 NO_REGEX=YesPlease
862 fi
863 GIT_CONF_SUBST([NO_REGEX])
864 #
865 # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
866 # when attempting to read from an fopen'ed directory.
867 AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
868 [ac_cv_fread_reads_directories],
869 [
870 AC_RUN_IFELSE(
871 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
872 [[char c;
873 FILE *f = fopen(".", "r");
874 return f && fread(&c, 1, 1, f)]])],
875 [ac_cv_fread_reads_directories=no],
876 [ac_cv_fread_reads_directories=yes])
877 ])
878 if test $ac_cv_fread_reads_directories = yes; then
879 FREAD_READS_DIRECTORIES=UnfortunatelyYes
880 else
881 FREAD_READS_DIRECTORIES=
882 fi
883 GIT_CONF_SUBST([FREAD_READS_DIRECTORIES])
884 #
885 # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
886 # or vsnprintf() return -1 instead of number of characters which would
887 # have been written to the final string if enough space had been available.
888 AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
889 [ac_cv_snprintf_returns_bogus],
890 [
891 AC_RUN_IFELSE(
892 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
893 #include "stdarg.h"
895 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
896 {
897 int ret;
898 va_list ap;
899 va_start(ap, format);
900 ret = vsnprintf(str, maxsize, format, ap);
901 va_end(ap);
902 return ret;
903 }],
904 [[char buf[6];
905 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
906 || strcmp(buf, "12")) return 1;
907 if (snprintf(buf, 3, "%s", "12345") != 5
908 || strcmp(buf, "12")) return 1]])],
909 [ac_cv_snprintf_returns_bogus=no],
910 [ac_cv_snprintf_returns_bogus=yes])
911 ])
912 if test $ac_cv_snprintf_returns_bogus = yes; then
913 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
914 else
915 SNPRINTF_RETURNS_BOGUS=
916 fi
917 GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS])
918 #
919 # Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type
920 # bits in mode values.
921 AC_CACHE_CHECK([whether the platform uses typical file type bits],
922 [ac_cv_sane_mode_bits], [
923 AC_EGREP_CPP(yippeeyeswehaveit,
924 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
925 [#if S_IFMT == 0170000 && \
926 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \
927 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \
928 S_IFIFO == 0010000 && S_IFSOCK == 0140000
929 yippeeyeswehaveit
930 #endif
931 ]),
932 [ac_cv_sane_mode_bits=yes],
933 [ac_cv_sane_mode_bits=no])
934 ])
935 if test $ac_cv_sane_mode_bits = yes; then
936 NEEDS_MODE_TRANSLATION=
937 else
938 NEEDS_MODE_TRANSLATION=UnfortunatelyYes
939 fi
940 GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION])
943 ## Checks for library functions.
944 ## (in default C library and libraries checked by AC_CHECK_LIB)
945 AC_MSG_NOTICE([CHECKS for library functions])
946 #
947 # Define NO_LIBGEN_H if you don't have libgen.h.
948 AC_CHECK_HEADER([libgen.h],
949 [NO_LIBGEN_H=],
950 [NO_LIBGEN_H=YesPlease])
951 GIT_CONF_SUBST([NO_LIBGEN_H])
952 #
953 # Define HAVE_PATHS_H if you have paths.h.
954 AC_CHECK_HEADER([paths.h],
955 [HAVE_PATHS_H=YesPlease],
956 [HAVE_PATHS_H=])
957 GIT_CONF_SUBST([HAVE_PATHS_H])
958 #
959 # Define HAVE_LIBCHARSET_H if have libcharset.h
960 AC_CHECK_HEADER([libcharset.h],
961 [HAVE_LIBCHARSET_H=YesPlease],
962 [HAVE_LIBCHARSET_H=])
963 GIT_CONF_SUBST([HAVE_LIBCHARSET_H])
964 #
965 # Define HAVE_STRINGS_H if you have strings.h
966 AC_CHECK_HEADER([strings.h],
967 [HAVE_STRINGS_H=YesPlease],
968 [HAVE_STRINGS_H=])
969 GIT_CONF_SUBST([HAVE_STRINGS_H])
970 # Define CHARSET_LIB if libiconv does not export the locale_charset symbol
971 # and libcharset does
972 CHARSET_LIB=
973 AC_CHECK_LIB([iconv], [locale_charset],
974 [CHARSET_LIB=-liconv],
975 [AC_CHECK_LIB([charset], [locale_charset],
976 [CHARSET_LIB=-lcharset])])
977 GIT_CONF_SUBST([CHARSET_LIB])
978 #
979 # Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.
980 GIT_CHECK_FUNC(clock_gettime,
981 [HAVE_CLOCK_GETTIME=YesPlease],
982 [HAVE_CLOCK_GETTIME=])
983 GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])
985 AC_DEFUN([CLOCK_MONOTONIC_SRC], [
986 AC_LANG_PROGRAM([[
987 #include <time.h>
988 clockid_t id = CLOCK_MONOTONIC;
989 ]])])
991 #
992 # Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.
993 AC_MSG_CHECKING([for CLOCK_MONOTONIC])
994 AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],
995 [AC_MSG_RESULT([yes])
996 HAVE_CLOCK_MONOTONIC=YesPlease],
997 [AC_MSG_RESULT([no])
998 HAVE_CLOCK_MONOTONIC=])
999 GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])
1000 #
1001 # Define NO_SETITIMER if you don't have setitimer.
1002 GIT_CHECK_FUNC(setitimer,
1003 [NO_SETITIMER=],
1004 [NO_SETITIMER=YesPlease])
1005 GIT_CONF_SUBST([NO_SETITIMER])
1006 #
1007 # Define NO_STRCASESTR if you don't have strcasestr.
1008 GIT_CHECK_FUNC(strcasestr,
1009 [NO_STRCASESTR=],
1010 [NO_STRCASESTR=YesPlease])
1011 GIT_CONF_SUBST([NO_STRCASESTR])
1012 #
1013 # Define NO_MEMMEM if you don't have memmem.
1014 GIT_CHECK_FUNC(memmem,
1015 [NO_MEMMEM=],
1016 [NO_MEMMEM=YesPlease])
1017 GIT_CONF_SUBST([NO_MEMMEM])
1018 #
1019 # Define NO_STRLCPY if you don't have strlcpy.
1020 GIT_CHECK_FUNC(strlcpy,
1021 [NO_STRLCPY=],
1022 [NO_STRLCPY=YesPlease])
1023 GIT_CONF_SUBST([NO_STRLCPY])
1024 #
1025 # Define NO_UINTMAX_T if your platform does not have uintmax_t
1026 AC_CHECK_TYPE(uintmax_t,
1027 [NO_UINTMAX_T=],
1028 [NO_UINTMAX_T=YesPlease],[
1029 #include <inttypes.h>
1030 ])
1031 GIT_CONF_SUBST([NO_UINTMAX_T])
1032 #
1033 # Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1034 GIT_CHECK_FUNC(strtoumax,
1035 [NO_STRTOUMAX=],
1036 [NO_STRTOUMAX=YesPlease])
1037 GIT_CONF_SUBST([NO_STRTOUMAX])
1038 #
1039 # Define NO_SETENV if you don't have setenv in the C library.
1040 GIT_CHECK_FUNC(setenv,
1041 [NO_SETENV=],
1042 [NO_SETENV=YesPlease])
1043 GIT_CONF_SUBST([NO_SETENV])
1044 #
1045 # Define NO_UNSETENV if you don't have unsetenv in the C library.
1046 GIT_CHECK_FUNC(unsetenv,
1047 [NO_UNSETENV=],
1048 [NO_UNSETENV=YesPlease])
1049 GIT_CONF_SUBST([NO_UNSETENV])
1050 #
1051 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1052 GIT_CHECK_FUNC(mkdtemp,
1053 [NO_MKDTEMP=],
1054 [NO_MKDTEMP=YesPlease])
1055 GIT_CONF_SUBST([NO_MKDTEMP])
1056 #
1057 # Define NO_INITGROUPS if you don't have initgroups in the C library.
1058 GIT_CHECK_FUNC(initgroups,
1059 [NO_INITGROUPS=],
1060 [NO_INITGROUPS=YesPlease])
1061 GIT_CONF_SUBST([NO_INITGROUPS])
1062 #
1063 # Define HAVE_GETDELIM if you have getdelim in the C library.
1064 GIT_CHECK_FUNC(getdelim,
1065 [HAVE_GETDELIM=YesPlease],
1066 [HAVE_GETDELIM=])
1067 GIT_CONF_SUBST([HAVE_GETDELIM])
1068 #
1069 #
1070 # Define NO_MMAP if you want to avoid mmap.
1071 #
1072 # Define NO_ICONV if your libc does not properly support iconv.
1074 AC_DEFUN([BSD_SYSCTL_SRC], [
1075 AC_LANG_PROGRAM([[
1076 #include <stddef.h>
1077 #include <sys/types.h>
1078 #include <sys/sysctl.h>
1079 ]],[[
1080 int val, mib[2];
1081 size_t len;
1082 mib[0] = CTL_HW;
1083 mib[1] = 1;
1084 len = sizeof(val);
1085 return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;
1086 ]])])
1088 #
1089 # Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.
1090 AC_MSG_CHECKING([for BSD sysctl])
1091 AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],
1092 [AC_MSG_RESULT([yes])
1093 HAVE_BSD_SYSCTL=YesPlease],
1094 [AC_MSG_RESULT([no])
1095 HAVE_BSD_SYSCTL=])
1096 GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
1098 ## Other checks.
1099 # Define USE_PIC if you need the main git objects to be built with -fPIC
1100 # in order to build and link perl/Git.so. x86-64 seems to need this.
1101 #
1102 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
1103 # Enable it on Windows. By default, symrefs are still used.
1104 #
1105 # Define NO_PTHREADS if we do not have pthreads.
1106 #
1107 # Define PTHREAD_LIBS to the linker flag used for Pthread support.
1108 AC_DEFUN([PTHREADTEST_SRC], [
1109 AC_LANG_PROGRAM([[
1110 #include <pthread.h>
1111 static void *noop(void *ignore) { return ignore; }
1112 ]], [[
1113 pthread_mutex_t test_mutex;
1114 pthread_key_t test_key;
1115 pthread_t th;
1116 int retcode = 0;
1117 void *ret = (void *)0;
1118 retcode |= pthread_key_create(&test_key, (void *)0);
1119 retcode |= pthread_mutex_init(&test_mutex,(void *)0);
1120 retcode |= pthread_mutex_lock(&test_mutex);
1121 retcode |= pthread_mutex_unlock(&test_mutex);
1122 retcode |= pthread_create(&th, ret, noop, ret);
1123 retcode |= pthread_join(th, &ret);
1124 return retcode;
1125 ]])])
1127 dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1128 dnl [[#include <pthread.h>]],
1129 dnl [[pthread_mutex_t test_mutex;]]
1130 dnl )])
1132 NO_PTHREADS=UnfortunatelyYes
1133 PTHREAD_LIBS=
1135 if test -n "$USER_NOPTHREAD"; then
1136 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1137 # handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1138 # -D_REENTRANT' or some such.
1139 elif test -z "$PTHREAD_CFLAGS"; then
1140 threads_found=no
1141 # Attempt to compile and link some code using pthreads to determine
1142 # required linker flags. The order is somewhat important here: We
1143 # first try it without any extra flags, to catch systems where
1144 # pthreads are part of the C library, then go on testing various other
1145 # flags. We do so to avoid false positives. For example, on Mac OS X
1146 # pthreads are part of the C library; moreover, the compiler allows us
1147 # to add "-mt" to the CFLAGS (although it will do nothing except
1148 # trigger a warning about an unused flag). Hence if we checked for
1149 # "-mt" before "" we would end up picking it. But unfortunately this
1150 # would then trigger compiler warnings on every single file we compile.
1151 for opt in "" -mt -pthread -lpthread; do
1152 old_CFLAGS="$CFLAGS"
1153 old_LIBS="$LIBS"
1154 case "$opt" in
1155 -l*) LIBS="$opt $LIBS" ;;
1156 *) CFLAGS="$opt $CFLAGS" ;;
1157 esac
1159 AC_MSG_CHECKING([for POSIX Threads with '$opt'])
1160 AC_LINK_IFELSE([PTHREADTEST_SRC],
1161 [AC_MSG_RESULT([yes])
1162 NO_PTHREADS=
1163 PTHREAD_LIBS="$opt"
1164 PTHREAD_CFLAGS="$opt"
1165 threads_found=yes
1166 break
1167 ],
1168 [AC_MSG_RESULT([no])])
1169 CFLAGS="$old_CFLAGS"
1170 LIBS="$old_LIBS"
1171 done
1172 if test $threads_found != yes; then
1173 AC_CHECK_LIB([pthread], [pthread_create],
1174 [PTHREAD_LIBS="-lpthread"],
1175 [NO_PTHREADS=UnfortunatelyYes])
1176 fi
1177 else
1178 old_CFLAGS="$CFLAGS"
1179 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1180 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])
1181 AC_LINK_IFELSE([PTHREADTEST_SRC],
1182 [AC_MSG_RESULT([yes])
1183 NO_PTHREADS=
1184 PTHREAD_LIBS="$PTHREAD_CFLAGS"
1185 ],
1186 [AC_MSG_RESULT([no])])
1188 CFLAGS="$old_CFLAGS"
1189 fi
1191 CFLAGS="$old_CFLAGS"
1193 GIT_CONF_SUBST([PTHREAD_CFLAGS])
1194 GIT_CONF_SUBST([PTHREAD_LIBS])
1195 GIT_CONF_SUBST([NO_PTHREADS])
1197 ## Output files
1198 AC_CONFIG_FILES(["${config_file}":"${config_in}"])
1199 AC_OUTPUT