| blob | 7f8415140f309e0522310fac3160b5a01cefc7cd |
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 '$CSSMIN' to enable CSS minifying])
229 GIT_CONF_SUBST([CSSMIN])
230 ])
232 ## Site configuration (override autodetection)
233 ## --with-PACKAGE[=ARG] and --without-PACKAGE
234 AC_MSG_NOTICE([CHECKS for site configuration])
235 #
236 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
237 # tests. These tests take up a significant amount of the total test time
238 # but are not needed unless you plan to talk to SVN repos.
239 #
240 # Define PPC_SHA1 environment variable when running make to make use of
241 # a bundled SHA1 routine optimized for PowerPC.
242 #
243 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
244 #
245 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
246 # /foo/bar/include and /foo/bar/lib directories.
247 AC_ARG_WITH(openssl,
248 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
249 AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),
250 GIT_PARSE_WITH([openssl]))
252 # Define USE_LIBPCRE if you have and want to use libpcre. Various
253 # commands such as log and grep offer runtime options to use
254 # Perl-compatible regular expressions instead of standard or extended
255 # POSIX regular expressions.
256 #
257 # Currently USE_LIBPCRE is a synonym for USE_LIBPCRE1, define
258 # USE_LIBPCRE2 instead if you'd like to use version 2 of the PCRE
259 # library. The USE_LIBPCRE flag will likely be changed to mean v2 by
260 # default in future releases.
261 #
262 # Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in
263 # /foo/bar/include and /foo/bar/lib directories.
264 #
265 AC_ARG_WITH(libpcre,
266 AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre1]),
267 if test "$withval" = "no"; then
268 USE_LIBPCRE1=
269 elif test "$withval" = "yes"; then
270 USE_LIBPCRE1=YesPlease
271 else
272 USE_LIBPCRE1=YesPlease
273 LIBPCREDIR=$withval
274 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
275 dnl USE_LIBPCRE1 can still be modified below, so don't substitute
276 dnl it yet.
277 GIT_CONF_SUBST([LIBPCREDIR])
278 fi)
280 AC_ARG_WITH(libpcre1,
281 AS_HELP_STRING([--with-libpcre1],[support Perl-compatible regexes via libpcre1 (default is NO)])
282 AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]),
283 if test "$withval" = "no"; then
284 USE_LIBPCRE1=
285 elif test "$withval" = "yes"; then
286 USE_LIBPCRE1=YesPlease
287 else
288 USE_LIBPCRE1=YesPlease
289 LIBPCREDIR=$withval
290 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
291 dnl USE_LIBPCRE1 can still be modified below, so don't substitute
292 dnl it yet.
293 GIT_CONF_SUBST([LIBPCREDIR])
294 fi)
296 AC_ARG_WITH(libpcre2,
297 AS_HELP_STRING([--with-libpcre2],[support Perl-compatible regexes via libpcre2 (default is NO)])
298 AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]),
299 if test -n "$USE_LIBPCRE1"; then
300 AC_MSG_ERROR([Only supply one of --with-libpcre1 or --with-libpcre2!])
301 fi
303 if test "$withval" = "no"; then
304 USE_LIBPCRE2=
305 elif test "$withval" = "yes"; then
306 USE_LIBPCRE2=YesPlease
307 else
308 USE_LIBPCRE2=YesPlease
309 LIBPCREDIR=$withval
310 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
311 dnl USE_LIBPCRE2 can still be modified below, so don't substitute
312 dnl it yet.
313 GIT_CONF_SUBST([LIBPCREDIR])
314 fi)
315 #
316 # Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header.
317 AC_FUNC_ALLOCA
318 case $ac_cv_working_alloca_h in
319 yes) HAVE_ALLOCA_H=YesPlease;;
320 *) HAVE_ALLOCA_H='';;
321 esac
322 GIT_CONF_SUBST([HAVE_ALLOCA_H])
323 #
324 # Define NO_CURL if you do not have curl installed. git-http-pull and
325 # git-http-push are not built, and you cannot use http:// and https://
326 # transports.
327 #
328 # Define CURLDIR=/foo/bar if your curl header and library files are in
329 # /foo/bar/include and /foo/bar/lib directories.
330 AC_ARG_WITH(curl,
331 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
332 AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
333 GIT_PARSE_WITH(curl))
334 #
335 # Define NO_EXPAT if you do not have expat installed. git-http-push is
336 # not built, and you cannot push using http:// and https:// transports.
337 #
338 # Define EXPATDIR=/foo/bar if your expat header and library files are in
339 # /foo/bar/include and /foo/bar/lib directories.
340 AC_ARG_WITH(expat,
341 AS_HELP_STRING([--with-expat],
342 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
343 AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
344 GIT_PARSE_WITH(expat))
345 #
346 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
347 # installed in /sw, but don't want GIT to link against any libraries
348 # installed there. If defined you may specify your own (or Fink's)
349 # include directories and library directories by defining CFLAGS
350 # and LDFLAGS appropriately.
351 #
352 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
353 # have DarwinPorts installed in /opt/local, but don't want GIT to
354 # link against any libraries installed there. If defined you may
355 # specify your own (or DarwinPort's) include directories and
356 # library directories by defining CFLAGS and LDFLAGS appropriately.
357 #
358 # Define NO_MMAP if you want to avoid mmap.
359 #
360 # Define NO_ICONV if your libc does not properly support iconv.
361 AC_ARG_WITH(iconv,
362 AS_HELP_STRING([--without-iconv],
363 [if your architecture doesn't properly support iconv])
364 AS_HELP_STRING([--with-iconv=PATH],
365 [PATH is prefix for libiconv library and headers])
366 AS_HELP_STRING([],
367 [used only if you need linking with libiconv]),
368 GIT_PARSE_WITH(iconv))
370 ## --enable-FEATURE[=ARG] and --disable-FEATURE
371 #
372 # Define USE_NSEC below if you want git to care about sub-second file mtimes
373 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
374 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
375 # randomly break unless your underlying filesystem supports those sub-second
376 # times (my ext3 doesn't).
377 #
378 # Define USE_STDEV below if you want git to care about the underlying device
379 # change being considered an inode change from the update-index perspective.
381 #
382 # Allow user to set ETC_GITCONFIG variable
383 GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
384 Use VALUE instead of /etc/gitconfig as the
385 global git configuration file.
386 If VALUE is not fully qualified it will be interpreted
387 as a path relative to the computed prefix at runtime.)
389 #
390 # Allow user to set ETC_GITATTRIBUTES variable
391 GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
392 Use VALUE instead of /etc/gitattributes as the
393 global git attributes file.
394 If VALUE is not fully qualified it will be interpreted
395 as a path relative to the computed prefix at runtime.)
397 #
398 # Allow user to set the default pager
399 GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
400 Use VALUE as the fall-back pager instead of 'less'.
401 This is used by things like 'git log' when the user
402 does not specify a pager to use through alternate
403 methods. eg: /usr/bin/pager)
404 #
405 # Allow user to set the default editor
406 GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
407 Use VALUE as the fall-back editor instead of 'vi'.
408 This is used by things like 'git commit' when the user
409 does not specify a preferred editor through other
410 methods. eg: /usr/bin/editor)
412 #
413 # Define SHELL_PATH to provide path to shell.
414 GIT_ARG_SET_PATH(shell)
415 #
416 # Define PERL_PATH to provide path to Perl.
417 GIT_ARG_SET_PATH(perl)
418 #
419 # Define PYTHON_PATH to provide path to Python.
420 GIT_ARG_SET_PATH(python, allow-without)
421 #
422 # Define ZLIB_PATH to provide path to zlib.
423 GIT_ARG_SET_PATH(zlib)
424 #
425 # Declare the with-tcltk/without-tcltk options.
426 AC_ARG_WITH(tcltk,
427 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
428 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
429 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
430 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
431 GIT_PARSE_WITH(tcltk))
432 #
435 ## Checks for programs.
436 AC_MSG_NOTICE([CHECKS for programs])
437 #
438 AC_PROG_CC([cc gcc])
439 AC_C_INLINE
440 case $ac_cv_c_inline in
441 inline | yes | no) INLINE='';;
442 *) INLINE=$ac_cv_c_inline ;;
443 esac
444 GIT_CONF_SUBST([INLINE])
446 # which switch to pass runtime path to dynamic libraries to the linker
447 AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
448 SAVE_LDFLAGS="${LDFLAGS}"
449 LDFLAGS="${SAVE_LDFLAGS} -R /"
450 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
451 LDFLAGS="${SAVE_LDFLAGS}"
452 ])
453 if test "$git_cv_ld_dashr" = "yes"; then
454 CC_LD_DYNPATH=-R
455 else
456 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
457 SAVE_LDFLAGS="${LDFLAGS}"
458 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
459 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
460 LDFLAGS="${SAVE_LDFLAGS}"
461 ])
462 if test "$git_cv_ld_wl_rpath" = "yes"; then
463 CC_LD_DYNPATH=-Wl,-rpath,
464 else
465 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
466 SAVE_LDFLAGS="${LDFLAGS}"
467 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
468 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
469 LDFLAGS="${SAVE_LDFLAGS}"
470 ])
471 if test "$git_cv_ld_rpath" = "yes"; then
472 CC_LD_DYNPATH=-rpath
473 else
474 CC_LD_DYNPATH=
475 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
476 fi
477 fi
478 fi
479 GIT_CONF_SUBST([CC_LD_DYNPATH])
480 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
481 AC_CHECK_TOOLS(AR, [gar ar], :)
482 AC_CHECK_PROGS(TAR, [gtar tar])
483 AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
484 # TCLTK_PATH will be set to some value if we want Tcl/Tk
485 # or will be empty otherwise.
486 if test -n "$NO_TCLTK"; then
487 TCLTK_PATH=
488 else
489 if test "$with_tcltk" = ""; then
490 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
491 TCLTK_PATH=wish
492 elif test "$with_tcltk" = "yes"; then
493 # Tcl/Tk check requested.
494 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
495 else
496 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
497 TCLTK_PATH="$with_tcltk"
498 fi
499 fi
500 GIT_CONF_SUBST([TCLTK_PATH])
501 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
502 if test -n "$ASCIIDOC"; then
503 AC_MSG_CHECKING([for asciidoc version])
504 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
505 case "${asciidoc_version}" in
506 asciidoc' '8*)
507 AC_MSG_RESULT([${asciidoc_version}])
508 ;;
509 *)
510 AC_MSG_RESULT([${asciidoc_version} (unknown)])
511 ;;
512 esac
513 fi
515 if grep -a ascii configure.ac >/dev/null; then
516 AC_MSG_RESULT([Using 'grep -a' for sane_grep])
517 SANE_TEXT_GREP=-a
518 else
519 SANE_TEXT_GREP=
520 fi
521 GIT_CONF_SUBST([SANE_TEXT_GREP])
523 ## Checks for libraries.
524 AC_MSG_NOTICE([CHECKS for libraries])
525 #
526 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
527 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
529 GIT_STASH_FLAGS($OPENSSLDIR)
531 AC_CHECK_LIB([crypto], [SHA1_Init],
532 [NEEDS_SSL_WITH_CRYPTO=],
533 [AC_CHECK_LIB([ssl], [SHA1_Init],
534 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=],
535 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
537 GIT_UNSTASH_FLAGS($OPENSSLDIR)
539 GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO])
540 GIT_CONF_SUBST([NO_OPENSSL])
542 #
543 # Handle the USE_LIBPCRE1 and USE_LIBPCRE2 options potentially set
544 # above.
545 #
547 if test -n "$USE_LIBPCRE1"; then
549 GIT_STASH_FLAGS($LIBPCREDIR)
551 AC_CHECK_LIB([pcre], [pcre_version],
552 [USE_LIBPCRE=YesPlease],
553 [USE_LIBPCRE=])
555 GIT_UNSTASH_FLAGS($LIBPCREDIR)
557 GIT_CONF_SUBST([USE_LIBPCRE1])
559 fi
562 if test -n "$USE_LIBPCRE2"; then
564 GIT_STASH_FLAGS($LIBPCREDIR)
566 AC_CHECK_LIB([pcre2-8], [pcre2_config_8],
567 [USE_LIBPCRE2=YesPlease],
568 [USE_LIBPCRE2=])
570 GIT_UNSTASH_FLAGS($LIBPCREDIR)
572 GIT_CONF_SUBST([USE_LIBPCRE2])
574 fi
576 #
577 # Define NO_CURL if you do not have libcurl installed. git-http-pull and
578 # git-http-push are not built, and you cannot use http:// and https://
579 # transports.
581 GIT_STASH_FLAGS($CURLDIR)
583 AC_CHECK_LIB([curl], [curl_global_init],
584 [NO_CURL=],
585 [NO_CURL=YesPlease])
587 GIT_UNSTASH_FLAGS($CURLDIR)
589 GIT_CONF_SUBST([NO_CURL])
591 if test -z "$NO_CURL"; then
593 AC_CHECK_PROG([CURL_CONFIG], [curl-config],
594 [curl-config],
595 [no])
597 if test $CURL_CONFIG != no; then
598 GIT_CONF_SUBST([CURL_CONFIG])
599 if test -z "${NO_OPENSSL}"; then
600 AC_MSG_CHECKING([if Curl supports SSL])
601 if test $(curl-config --features|grep SSL) = SSL; then
602 NEEDS_SSL_WITH_CURL=YesPlease
603 AC_MSG_RESULT([yes])
604 else
605 NEEDS_SSL_WITH_CURL=
606 AC_MSG_RESULT([no])
607 fi
608 GIT_CONF_SUBST([NEEDS_SSL_WITH_CURL])
609 fi
610 fi
612 fi
615 #
616 # Define NO_EXPAT if you do not have expat installed. git-http-push is
617 # not built, and you cannot push using http:// and https:// transports.
619 GIT_STASH_FLAGS($EXPATDIR)
621 AC_CHECK_LIB([expat], [XML_ParserCreate],
622 [NO_EXPAT=],
623 [NO_EXPAT=YesPlease])
625 GIT_UNSTASH_FLAGS($EXPATDIR)
627 GIT_CONF_SUBST([NO_EXPAT])
629 #
630 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
631 # some Solaris installations).
632 # Define NO_ICONV if neither libc nor libiconv support iconv.
634 if test -z "$NO_ICONV"; then
636 GIT_STASH_FLAGS($ICONVDIR)
638 AC_DEFUN([ICONVTEST_SRC],
639 [AC_LANG_PROGRAM([#include <iconv.h>],
640 [iconv_open("", "");])])
642 if test -n "$ICONVDIR"; then
643 lib_order="-liconv -lc"
644 else
645 lib_order="-lc -liconv"
646 fi
648 NO_ICONV=YesPlease
650 for l in $lib_order; do
651 if test "$l" = "-liconv"; then
652 NEEDS_LIBICONV=YesPlease
653 else
654 NEEDS_LIBICONV=
655 fi
657 old_LIBS="$LIBS"
658 LIBS="$LIBS $l"
659 AC_MSG_CHECKING([for iconv in $l])
660 AC_LINK_IFELSE([ICONVTEST_SRC],
661 [AC_MSG_RESULT([yes])
662 NO_ICONV=
663 break],
664 [AC_MSG_RESULT([no])])
665 LIBS="$old_LIBS"
666 done
668 #in case of break
669 LIBS="$old_LIBS"
671 GIT_UNSTASH_FLAGS($ICONVDIR)
673 GIT_CONF_SUBST([NEEDS_LIBICONV])
674 GIT_CONF_SUBST([NO_ICONV])
676 if test -n "$NO_ICONV"; then
677 NEEDS_LIBICONV=
678 fi
680 fi
682 #
683 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
685 GIT_STASH_FLAGS($ZLIB_PATH)
687 AC_DEFUN([ZLIBTEST_SRC], [
688 AC_LANG_PROGRAM([#include <zlib.h>],
689 [deflateBound(0, 0);])])
690 AC_MSG_CHECKING([for deflateBound in -lz])
691 old_LIBS="$LIBS"
692 LIBS="$LIBS -lz"
693 AC_LINK_IFELSE([ZLIBTEST_SRC],
694 [AC_MSG_RESULT([yes])],
695 [AC_MSG_RESULT([no])
696 NO_DEFLATE_BOUND=yes])
697 LIBS="$old_LIBS"
699 GIT_UNSTASH_FLAGS($ZLIB_PATH)
701 GIT_CONF_SUBST([NO_DEFLATE_BOUND])
703 #
704 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
705 # Patrick Mauritz).
706 AC_CHECK_LIB([c], [socket],
707 [NEEDS_SOCKET=],
708 [NEEDS_SOCKET=YesPlease])
709 GIT_CONF_SUBST([NEEDS_SOCKET])
710 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
712 #
713 # The next few tests will define NEEDS_RESOLV if linking with
714 # libresolv provides some of the functions we would normally get
715 # from libc.
716 NEEDS_RESOLV=
717 #
718 # Define NO_INET_NTOP if linking with -lresolv is not enough.
719 # Solaris 2.7 in particular hos inet_ntop in -lresolv.
720 NO_INET_NTOP=
721 AC_CHECK_FUNC([inet_ntop],
722 [],
723 [AC_CHECK_LIB([resolv], [inet_ntop],
724 [NEEDS_RESOLV=YesPlease],
725 [NO_INET_NTOP=YesPlease])
726 ])
727 GIT_CONF_SUBST([NO_INET_NTOP])
728 #
729 # Define NO_INET_PTON if linking with -lresolv is not enough.
730 # Solaris 2.7 in particular hos inet_pton in -lresolv.
731 NO_INET_PTON=
732 AC_CHECK_FUNC([inet_pton],
733 [],
734 [AC_CHECK_LIB([resolv], [inet_pton],
735 [NEEDS_RESOLV=YesPlease],
736 [NO_INET_PTON=YesPlease])
737 ])
738 GIT_CONF_SUBST([NO_INET_PTON])
739 #
740 # Define NO_HSTRERROR if linking with -lresolv is not enough.
741 # Solaris 2.6 in particular has no hstrerror, even in -lresolv.
742 NO_HSTRERROR=
743 AC_CHECK_FUNC([hstrerror],
744 [],
745 [AC_CHECK_LIB([resolv], [hstrerror],
746 [NEEDS_RESOLV=YesPlease],
747 [NO_HSTRERROR=YesPlease])
748 ])
749 GIT_CONF_SUBST([NO_HSTRERROR])
751 dnl This must go after all the possible places for its initialization,
752 dnl in the AC_CHECK_FUNC invocations above.
753 GIT_CONF_SUBST([NEEDS_RESOLV])
754 #
755 # If any of the above tests determined that -lresolv is needed at
756 # build-time, also set it here for remaining configure-time checks.
757 test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
759 AC_CHECK_LIB([c], [basename],
760 [NEEDS_LIBGEN=],
761 [NEEDS_LIBGEN=YesPlease])
762 GIT_CONF_SUBST([NEEDS_LIBGEN])
763 test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
765 AC_CHECK_LIB([c], [gettext],
766 [LIBC_CONTAINS_LIBINTL=YesPlease],
767 [LIBC_CONTAINS_LIBINTL=])
768 GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL])
770 #
771 # Define NO_GETTEXT if you don't want Git output to be translated.
772 # A translated Git requires GNU libintl or another gettext implementation
773 AC_CHECK_HEADER([libintl.h],
774 [NO_GETTEXT=],
775 [NO_GETTEXT=YesPlease])
776 GIT_CONF_SUBST([NO_GETTEXT])
778 if test -z "$NO_GETTEXT"; then
779 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
780 fi
782 ## Checks for header files.
783 AC_MSG_NOTICE([CHECKS for header files])
784 #
785 # Define NO_SYS_SELECT_H if you don't have sys/select.h.
786 AC_CHECK_HEADER([sys/select.h],
787 [NO_SYS_SELECT_H=],
788 [NO_SYS_SELECT_H=UnfortunatelyYes])
789 GIT_CONF_SUBST([NO_SYS_SELECT_H])
790 #
791 # Define NO_SYS_POLL_H if you don't have sys/poll.h
792 AC_CHECK_HEADER([sys/poll.h],
793 [NO_SYS_POLL_H=],
794 [NO_SYS_POLL_H=UnfortunatelyYes])
795 GIT_CONF_SUBST([NO_SYS_POLL_H])
796 #
797 # Define NO_INTTYPES_H if you don't have inttypes.h
798 AC_CHECK_HEADER([inttypes.h],
799 [NO_INTTYPES_H=],
800 [NO_INTTYPES_H=UnfortunatelyYes])
801 GIT_CONF_SUBST([NO_INTTYPES_H])
802 #
803 # Define OLD_ICONV if your library has an old iconv(), where the second
804 # (input buffer pointer) parameter is declared with type (const char **).
805 AC_DEFUN([OLDICONVTEST_SRC], [
806 AC_LANG_PROGRAM([[
807 #include <iconv.h>
809 extern size_t iconv(iconv_t cd,
810 char **inbuf, size_t *inbytesleft,
811 char **outbuf, size_t *outbytesleft);
812 ]], [])])
814 GIT_STASH_FLAGS($ICONVDIR)
816 AC_MSG_CHECKING([for old iconv()])
817 AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
818 [AC_MSG_RESULT([no])],
819 [AC_MSG_RESULT([yes])
820 OLD_ICONV=UnfortunatelyYes])
822 GIT_UNSTASH_FLAGS($ICONVDIR)
824 GIT_CONF_SUBST([OLD_ICONV])
826 ## Checks for typedefs, structures, and compiler characteristics.
827 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
828 #
829 TYPE_SOCKLEN_T
830 case $ac_cv_type_socklen_t in
831 yes) SOCKLEN_T='';;
832 *) SOCKLEN_T=$git_cv_socklen_t_equiv;;
833 esac
834 GIT_CONF_SUBST([SOCKLEN_T])
836 #
837 # Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval.
838 AC_CHECK_TYPES([struct itimerval],
839 [NO_STRUCT_ITIMERVAL=],
840 [NO_STRUCT_ITIMERVAL=UnfortunatelyYes],
841 [#include <sys/time.h>])
842 GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL])
843 #
844 # Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists.
845 # Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor
846 # stat.st_mtimespec.tv_nsec exists.
847 AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec])
848 AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec])
849 if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then
850 USE_ST_TIMESPEC=YesPlease
851 GIT_CONF_SUBST([USE_ST_TIMESPEC])
852 elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then
853 NO_NSEC=YesPlease
854 GIT_CONF_SUBST([NO_NSEC])
855 fi
856 #
857 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
858 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
859 AC_CHECK_MEMBER(struct dirent.d_type,
860 [NO_D_TYPE_IN_DIRENT=],
861 [NO_D_TYPE_IN_DIRENT=YesPlease],
862 [#include <dirent.h>])
863 GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT])
864 #
865 # Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd
866 # in the C library.
867 AC_CHECK_MEMBER(struct passwd.pw_gecos,
868 [NO_GECOS_IN_PWENT=],
869 [NO_GECOS_IN_PWENT=YesPlease],
870 [#include <pwd.h>])
871 GIT_CONF_SUBST([NO_GECOS_IN_PWENT])
872 #
873 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
874 # sockaddr_storage.
875 AC_CHECK_TYPE(struct sockaddr_storage,
876 [NO_SOCKADDR_STORAGE=],
877 [NO_SOCKADDR_STORAGE=YesPlease],[
878 #include <sys/types.h>
879 #include <sys/socket.h>
880 ])
881 GIT_CONF_SUBST([NO_SOCKADDR_STORAGE])
882 #
883 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
884 AC_CHECK_TYPE([struct addrinfo],[
885 GIT_CHECK_FUNC([getaddrinfo],
886 [NO_IPV6=],
887 [NO_IPV6=YesPlease])
888 ],[NO_IPV6=YesPlease],[
889 #include <sys/types.h>
890 #include <sys/socket.h>
891 #include <netdb.h>
892 ])
893 GIT_CONF_SUBST([NO_IPV6])
894 #
895 # Define NO_REGEX if your C library lacks regex support with REG_STARTEND
896 # feature.
897 AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND],
898 [ac_cv_c_regex_with_reg_startend], [
899 AC_EGREP_CPP(yippeeyeswehaveit,
900 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
901 #include <regex.h>
902 ],
903 [#ifdef REG_STARTEND
904 yippeeyeswehaveit
905 #endif
906 ]),
907 [ac_cv_c_regex_with_reg_startend=yes],
908 [ac_cv_c_regex_with_reg_startend=no])
909 ])
910 if test $ac_cv_c_regex_with_reg_startend = yes; then
911 NO_REGEX=
912 else
913 NO_REGEX=YesPlease
914 fi
915 GIT_CONF_SUBST([NO_REGEX])
916 #
917 # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
918 # when attempting to read from an fopen'ed directory.
919 AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
920 [ac_cv_fread_reads_directories],
921 [
922 AC_RUN_IFELSE(
923 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
924 [[
925 FILE *f = fopen(".", "r");
926 return f)]])],
927 [ac_cv_fread_reads_directories=no],
928 [ac_cv_fread_reads_directories=yes])
929 ])
930 if test $ac_cv_fread_reads_directories = yes; then
931 FREAD_READS_DIRECTORIES=UnfortunatelyYes
932 else
933 FREAD_READS_DIRECTORIES=
934 fi
935 GIT_CONF_SUBST([FREAD_READS_DIRECTORIES])
936 #
937 # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
938 # or vsnprintf() return -1 instead of number of characters which would
939 # have been written to the final string if enough space had been available.
940 AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
941 [ac_cv_snprintf_returns_bogus],
942 [
943 AC_RUN_IFELSE(
944 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
945 #include "stdarg.h"
947 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
948 {
949 int ret;
950 va_list ap;
951 va_start(ap, format);
952 ret = vsnprintf(str, maxsize, format, ap);
953 va_end(ap);
954 return ret;
955 }],
956 [[char buf[6];
957 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
958 || strcmp(buf, "12")) return 1;
959 if (snprintf(buf, 3, "%s", "12345") != 5
960 || strcmp(buf, "12")) return 1]])],
961 [ac_cv_snprintf_returns_bogus=no],
962 [ac_cv_snprintf_returns_bogus=yes])
963 ])
964 if test $ac_cv_snprintf_returns_bogus = yes; then
965 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
966 else
967 SNPRINTF_RETURNS_BOGUS=
968 fi
969 GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS])
970 #
971 # Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type
972 # bits in mode values.
973 AC_CACHE_CHECK([whether the platform uses typical file type bits],
974 [ac_cv_sane_mode_bits], [
975 AC_EGREP_CPP(yippeeyeswehaveit,
976 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
977 [#if S_IFMT == 0170000 && \
978 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \
979 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \
980 S_IFIFO == 0010000 && S_IFSOCK == 0140000
981 yippeeyeswehaveit
982 #endif
983 ]),
984 [ac_cv_sane_mode_bits=yes],
985 [ac_cv_sane_mode_bits=no])
986 ])
987 if test $ac_cv_sane_mode_bits = yes; then
988 NEEDS_MODE_TRANSLATION=
989 else
990 NEEDS_MODE_TRANSLATION=UnfortunatelyYes
991 fi
992 GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION])
995 ## Checks for library functions.
996 ## (in default C library and libraries checked by AC_CHECK_LIB)
997 AC_MSG_NOTICE([CHECKS for library functions])
998 #
999 # Define NO_LIBGEN_H if you don't have libgen.h.
1000 AC_CHECK_HEADER([libgen.h],
1001 [NO_LIBGEN_H=],
1002 [NO_LIBGEN_H=YesPlease])
1003 GIT_CONF_SUBST([NO_LIBGEN_H])
1004 #
1005 # Define HAVE_PATHS_H if you have paths.h.
1006 AC_CHECK_HEADER([paths.h],
1007 [HAVE_PATHS_H=YesPlease],
1008 [HAVE_PATHS_H=])
1009 GIT_CONF_SUBST([HAVE_PATHS_H])
1010 #
1011 # Define HAVE_LIBCHARSET_H if have libcharset.h
1012 AC_CHECK_HEADER([libcharset.h],
1013 [HAVE_LIBCHARSET_H=YesPlease],
1014 [HAVE_LIBCHARSET_H=])
1015 GIT_CONF_SUBST([HAVE_LIBCHARSET_H])
1016 #
1017 # Define HAVE_STRINGS_H if you have strings.h
1018 AC_CHECK_HEADER([strings.h],
1019 [HAVE_STRINGS_H=YesPlease],
1020 [HAVE_STRINGS_H=])
1021 GIT_CONF_SUBST([HAVE_STRINGS_H])
1022 # Define CHARSET_LIB if libiconv does not export the locale_charset symbol
1023 # and libcharset does
1024 CHARSET_LIB=
1025 AC_CHECK_LIB([iconv], [locale_charset],
1026 [CHARSET_LIB=-liconv],
1027 [AC_CHECK_LIB([charset], [locale_charset],
1028 [CHARSET_LIB=-lcharset])])
1029 GIT_CONF_SUBST([CHARSET_LIB])
1030 #
1031 # Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.
1032 GIT_CHECK_FUNC(clock_gettime,
1033 [HAVE_CLOCK_GETTIME=YesPlease],
1034 [HAVE_CLOCK_GETTIME=])
1035 GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])
1037 AC_DEFUN([CLOCK_MONOTONIC_SRC], [
1038 AC_LANG_PROGRAM([[
1039 #include <time.h>
1040 clockid_t id = CLOCK_MONOTONIC;
1041 ]])])
1043 #
1044 # Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.
1045 AC_MSG_CHECKING([for CLOCK_MONOTONIC])
1046 AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],
1047 [AC_MSG_RESULT([yes])
1048 HAVE_CLOCK_MONOTONIC=YesPlease],
1049 [AC_MSG_RESULT([no])
1050 HAVE_CLOCK_MONOTONIC=])
1051 GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])
1052 #
1053 # Define NO_SETITIMER if you don't have setitimer.
1054 GIT_CHECK_FUNC(setitimer,
1055 [NO_SETITIMER=],
1056 [NO_SETITIMER=YesPlease])
1057 GIT_CONF_SUBST([NO_SETITIMER])
1058 #
1059 # Define NO_STRCASESTR if you don't have strcasestr.
1060 GIT_CHECK_FUNC(strcasestr,
1061 [NO_STRCASESTR=],
1062 [NO_STRCASESTR=YesPlease])
1063 GIT_CONF_SUBST([NO_STRCASESTR])
1064 #
1065 # Define NO_MEMMEM if you don't have memmem.
1066 GIT_CHECK_FUNC(memmem,
1067 [NO_MEMMEM=],
1068 [NO_MEMMEM=YesPlease])
1069 GIT_CONF_SUBST([NO_MEMMEM])
1070 #
1071 # Define NO_STRLCPY if you don't have strlcpy.
1072 GIT_CHECK_FUNC(strlcpy,
1073 [NO_STRLCPY=],
1074 [NO_STRLCPY=YesPlease])
1075 GIT_CONF_SUBST([NO_STRLCPY])
1076 #
1077 # Define NO_UINTMAX_T if your platform does not have uintmax_t
1078 AC_CHECK_TYPE(uintmax_t,
1079 [NO_UINTMAX_T=],
1080 [NO_UINTMAX_T=YesPlease],[
1081 #include <inttypes.h>
1082 ])
1083 GIT_CONF_SUBST([NO_UINTMAX_T])
1084 #
1085 # Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1086 GIT_CHECK_FUNC(strtoumax,
1087 [NO_STRTOUMAX=],
1088 [NO_STRTOUMAX=YesPlease])
1089 GIT_CONF_SUBST([NO_STRTOUMAX])
1090 #
1091 # Define NO_SETENV if you don't have setenv in the C library.
1092 GIT_CHECK_FUNC(setenv,
1093 [NO_SETENV=],
1094 [NO_SETENV=YesPlease])
1095 GIT_CONF_SUBST([NO_SETENV])
1096 #
1097 # Define NO_UNSETENV if you don't have unsetenv in the C library.
1098 GIT_CHECK_FUNC(unsetenv,
1099 [NO_UNSETENV=],
1100 [NO_UNSETENV=YesPlease])
1101 GIT_CONF_SUBST([NO_UNSETENV])
1102 #
1103 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1104 GIT_CHECK_FUNC(mkdtemp,
1105 [NO_MKDTEMP=],
1106 [NO_MKDTEMP=YesPlease])
1107 GIT_CONF_SUBST([NO_MKDTEMP])
1108 #
1109 # Define NO_INITGROUPS if you don't have initgroups in the C library.
1110 GIT_CHECK_FUNC(initgroups,
1111 [NO_INITGROUPS=],
1112 [NO_INITGROUPS=YesPlease])
1113 GIT_CONF_SUBST([NO_INITGROUPS])
1114 #
1115 # Define HAVE_GETDELIM if you have getdelim in the C library.
1116 GIT_CHECK_FUNC(getdelim,
1117 [HAVE_GETDELIM=YesPlease],
1118 [HAVE_GETDELIM=])
1119 GIT_CONF_SUBST([HAVE_GETDELIM])
1120 #
1121 #
1122 # Define NO_MMAP if you want to avoid mmap.
1123 #
1124 # Define NO_ICONV if your libc does not properly support iconv.
1126 AC_DEFUN([BSD_SYSCTL_SRC], [
1127 AC_LANG_PROGRAM([[
1128 #include <stddef.h>
1129 #include <sys/types.h>
1130 #include <sys/sysctl.h>
1131 ]],[[
1132 int val, mib[2];
1133 size_t len;
1134 mib[0] = CTL_HW;
1135 mib[1] = 1;
1136 len = sizeof(val);
1137 return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;
1138 ]])])
1140 #
1141 # Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.
1142 AC_MSG_CHECKING([for BSD sysctl])
1143 AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],
1144 [AC_MSG_RESULT([yes])
1145 HAVE_BSD_SYSCTL=YesPlease],
1146 [AC_MSG_RESULT([no])
1147 HAVE_BSD_SYSCTL=])
1148 GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
1150 ## Other checks.
1151 # Define USE_PIC if you need the main git objects to be built with -fPIC
1152 # in order to build and link perl/Git.so. x86-64 seems to need this.
1153 #
1154 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
1155 # Enable it on Windows. By default, symrefs are still used.
1156 #
1157 # Define NO_PTHREADS if we do not have pthreads.
1158 #
1159 # Define PTHREAD_LIBS to the linker flag used for Pthread support.
1160 AC_DEFUN([PTHREADTEST_SRC], [
1161 AC_LANG_PROGRAM([[
1162 #include <pthread.h>
1163 static void *noop(void *ignore) { return ignore; }
1164 ]], [[
1165 pthread_mutex_t test_mutex;
1166 pthread_key_t test_key;
1167 pthread_t th;
1168 int retcode = 0;
1169 void *ret = (void *)0;
1170 retcode |= pthread_key_create(&test_key, (void *)0);
1171 retcode |= pthread_mutex_init(&test_mutex,(void *)0);
1172 retcode |= pthread_mutex_lock(&test_mutex);
1173 retcode |= pthread_mutex_unlock(&test_mutex);
1174 retcode |= pthread_create(&th, ret, noop, ret);
1175 retcode |= pthread_join(th, &ret);
1176 return retcode;
1177 ]])])
1179 dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1180 dnl [[#include <pthread.h>]],
1181 dnl [[pthread_mutex_t test_mutex;]]
1182 dnl )])
1184 NO_PTHREADS=UnfortunatelyYes
1185 PTHREAD_LIBS=
1187 if test -n "$USER_NOPTHREAD"; then
1188 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1189 # handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1190 # -D_REENTRANT' or some such.
1191 elif test -z "$PTHREAD_CFLAGS"; then
1192 threads_found=no
1193 # Attempt to compile and link some code using pthreads to determine
1194 # required linker flags. The order is somewhat important here: We
1195 # first try it without any extra flags, to catch systems where
1196 # pthreads are part of the C library, then go on testing various other
1197 # flags. We do so to avoid false positives. For example, on Mac OS X
1198 # pthreads are part of the C library; moreover, the compiler allows us
1199 # to add "-mt" to the CFLAGS (although it will do nothing except
1200 # trigger a warning about an unused flag). Hence if we checked for
1201 # "-mt" before "" we would end up picking it. But unfortunately this
1202 # would then trigger compiler warnings on every single file we compile.
1203 for opt in "" -mt -pthread -lpthread; do
1204 old_CFLAGS="$CFLAGS"
1205 old_LIBS="$LIBS"
1206 case "$opt" in
1207 -l*) LIBS="$opt $LIBS" ;;
1208 *) CFLAGS="$opt $CFLAGS" ;;
1209 esac
1211 AC_MSG_CHECKING([for POSIX Threads with '$opt'])
1212 AC_LINK_IFELSE([PTHREADTEST_SRC],
1213 [AC_MSG_RESULT([yes])
1214 NO_PTHREADS=
1215 PTHREAD_LIBS="$opt"
1216 PTHREAD_CFLAGS="$opt"
1217 threads_found=yes
1218 break
1219 ],
1220 [AC_MSG_RESULT([no])])
1221 CFLAGS="$old_CFLAGS"
1222 LIBS="$old_LIBS"
1223 done
1224 if test $threads_found != yes; then
1225 AC_CHECK_LIB([pthread], [pthread_create],
1226 [PTHREAD_LIBS="-lpthread"],
1227 [NO_PTHREADS=UnfortunatelyYes])
1228 fi
1229 else
1230 old_CFLAGS="$CFLAGS"
1231 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1232 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])
1233 AC_LINK_IFELSE([PTHREADTEST_SRC],
1234 [AC_MSG_RESULT([yes])
1235 NO_PTHREADS=
1236 PTHREAD_LIBS="$PTHREAD_CFLAGS"
1237 ],
1238 [AC_MSG_RESULT([no])])
1240 CFLAGS="$old_CFLAGS"
1241 fi
1243 CFLAGS="$old_CFLAGS"
1245 GIT_CONF_SUBST([PTHREAD_CFLAGS])
1246 GIT_CONF_SUBST([PTHREAD_LIBS])
1247 GIT_CONF_SUBST([NO_PTHREADS])
1249 ## Output files
1250 AC_CONFIG_FILES(["${config_file}":"${config_in}"])
1251 AC_OUTPUT