| blob | e11b7976ab1c93d8ccec2e499d0093db42551059 |
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 '$CSSMIN' to enable CSS minifying])
229 GIT_CONF_SUBST([CSSMIN])
230 ])
232 ## Site configuration (override autodetection)
233 ## --with-PACKAGE[=ARG] and --without-PACKAGE
234 AC_MSG_NOTICE([CHECKS for site configuration])
235 #
236 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
237 # tests. These tests take up a significant amount of the total test time
238 # but are not needed unless you plan to talk to SVN repos.
239 #
240 # Define PPC_SHA1 environment variable when running make to make use of
241 # a bundled SHA1 routine optimized for PowerPC.
242 #
243 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
244 #
245 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
246 # /foo/bar/include and /foo/bar/lib directories.
247 AC_ARG_WITH(openssl,
248 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
249 AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),
250 GIT_PARSE_WITH([openssl]))
252 # Define USE_LIBPCRE if you have and want to use libpcre. Various
253 # commands such as log and grep offer runtime options to use
254 # Perl-compatible regular expressions instead of standard or extended
255 # POSIX regular expressions.
256 #
257 # USE_LIBPCRE is a synonym for USE_LIBPCRE2, define USE_LIBPCRE1
258 # instead if you'd like to use the legacy version 1 of the PCRE
259 # library. Support for version 1 will likely be removed in some future
260 # release of Git, as upstream has all but abandoned it.
261 #
262 # Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in
263 # /foo/bar/include and /foo/bar/lib directories.
264 #
265 AC_ARG_WITH(libpcre,
266 AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre2]),
267 if test "$withval" = "no"; then
268 USE_LIBPCRE2=
269 elif test "$withval" = "yes"; then
270 USE_LIBPCRE2=YesPlease
271 else
272 USE_LIBPCRE2=YesPlease
273 LIBPCREDIR=$withval
274 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
275 dnl USE_LIBPCRE2 can still be modified below, so don't substitute
276 dnl it yet.
277 GIT_CONF_SUBST([LIBPCREDIR])
278 fi)
280 AC_ARG_WITH(libpcre1,
281 AS_HELP_STRING([--with-libpcre1],[support Perl-compatible regexes via libpcre1 (default is NO)])
282 AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]),
283 if test "$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_LIBPCRE2"; then
300 AC_MSG_ERROR([Only supply one of --with-libpcre or its synonym --with-libpcre2!])
301 fi
303 if test -n "$USE_LIBPCRE1"; then
304 AC_MSG_ERROR([Only supply one of --with-libpcre1 or --with-libpcre2!])
305 fi
307 if test "$withval" = "no"; then
308 USE_LIBPCRE2=
309 elif test "$withval" = "yes"; then
310 USE_LIBPCRE2=YesPlease
311 else
312 USE_LIBPCRE2=YesPlease
313 LIBPCREDIR=$withval
314 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
315 dnl USE_LIBPCRE2 can still be modified below, so don't substitute
316 dnl it yet.
317 GIT_CONF_SUBST([LIBPCREDIR])
318 fi)
319 #
320 # Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header.
321 AC_FUNC_ALLOCA
322 case $ac_cv_working_alloca_h in
323 yes) HAVE_ALLOCA_H=YesPlease;;
324 *) HAVE_ALLOCA_H='';;
325 esac
326 GIT_CONF_SUBST([HAVE_ALLOCA_H])
327 #
328 # Define NO_CURL if you do not have curl installed. git-http-pull and
329 # git-http-push are not built, and you cannot use http:// and https://
330 # transports.
331 #
332 # Define CURLDIR=/foo/bar if your curl header and library files are in
333 # /foo/bar/include and /foo/bar/lib directories.
334 AC_ARG_WITH(curl,
335 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
336 AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
337 GIT_PARSE_WITH(curl))
338 #
339 # Define NO_EXPAT if you do not have expat installed. git-http-push is
340 # not built, and you cannot push using http:// and https:// transports.
341 #
342 # Define EXPATDIR=/foo/bar if your expat header and library files are in
343 # /foo/bar/include and /foo/bar/lib directories.
344 AC_ARG_WITH(expat,
345 AS_HELP_STRING([--with-expat],
346 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
347 AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
348 GIT_PARSE_WITH(expat))
349 #
350 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
351 # installed in /sw, but don't want GIT to link against any libraries
352 # installed there. If defined you may specify your own (or Fink's)
353 # include directories and library directories by defining CFLAGS
354 # and LDFLAGS appropriately.
355 #
356 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
357 # have DarwinPorts installed in /opt/local, but don't want GIT to
358 # link against any libraries installed there. If defined you may
359 # specify your own (or DarwinPort's) include directories and
360 # library directories by defining CFLAGS and LDFLAGS appropriately.
361 #
362 # Define NO_MMAP if you want to avoid mmap.
363 #
364 # Define NO_ICONV if your libc does not properly support iconv.
365 AC_ARG_WITH(iconv,
366 AS_HELP_STRING([--without-iconv],
367 [if your architecture doesn't properly support iconv])
368 AS_HELP_STRING([--with-iconv=PATH],
369 [PATH is prefix for libiconv library and headers])
370 AS_HELP_STRING([],
371 [used only if you need linking with libiconv]),
372 GIT_PARSE_WITH(iconv))
374 ## --enable-FEATURE[=ARG] and --disable-FEATURE
375 #
376 # Define USE_NSEC below if you want git to care about sub-second file mtimes
377 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
378 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
379 # randomly break unless your underlying filesystem supports those sub-second
380 # times (my ext3 doesn't).
381 #
382 # Define USE_STDEV below if you want git to care about the underlying device
383 # change being considered an inode change from the update-index perspective.
385 #
386 # Allow user to set ETC_GITCONFIG variable
387 GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
388 Use VALUE instead of /etc/gitconfig as the
389 global git configuration file.
390 If VALUE is not fully qualified it will be interpreted
391 as a path relative to the computed prefix at runtime.)
393 #
394 # Allow user to set ETC_GITATTRIBUTES variable
395 GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
396 Use VALUE instead of /etc/gitattributes as the
397 global git attributes file.
398 If VALUE is not fully qualified it will be interpreted
399 as a path relative to the computed prefix at runtime.)
401 #
402 # Allow user to set the default pager
403 GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
404 Use VALUE as the fall-back pager instead of 'less'.
405 This is used by things like 'git log' when the user
406 does not specify a pager to use through alternate
407 methods. eg: /usr/bin/pager)
408 #
409 # Allow user to set the default editor
410 GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
411 Use VALUE as the fall-back editor instead of 'vi'.
412 This is used by things like 'git commit' when the user
413 does not specify a preferred editor through other
414 methods. eg: /usr/bin/editor)
416 #
417 # Define SHELL_PATH to provide path to shell.
418 GIT_ARG_SET_PATH(shell)
419 #
420 # Define PERL_PATH to provide path to Perl.
421 GIT_ARG_SET_PATH(perl)
422 #
423 # Define PYTHON_PATH to provide path to Python.
424 GIT_ARG_SET_PATH(python, allow-without)
425 #
426 # Define ZLIB_PATH to provide path to zlib.
427 GIT_ARG_SET_PATH(zlib)
428 #
429 # Declare the with-tcltk/without-tcltk options.
430 AC_ARG_WITH(tcltk,
431 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
432 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
433 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
434 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
435 GIT_PARSE_WITH(tcltk))
436 #
439 ## Checks for programs.
440 AC_MSG_NOTICE([CHECKS for programs])
441 #
442 AC_PROG_CC([cc gcc])
443 AC_C_INLINE
444 case $ac_cv_c_inline in
445 inline | yes | no) INLINE='';;
446 *) INLINE=$ac_cv_c_inline ;;
447 esac
448 GIT_CONF_SUBST([INLINE])
450 # which switch to pass runtime path to dynamic libraries to the linker
451 AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
452 SAVE_LDFLAGS="${LDFLAGS}"
453 LDFLAGS="${SAVE_LDFLAGS} -R /"
454 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
455 LDFLAGS="${SAVE_LDFLAGS}"
456 ])
457 if test "$git_cv_ld_dashr" = "yes"; then
458 CC_LD_DYNPATH=-R
459 else
460 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
461 SAVE_LDFLAGS="${LDFLAGS}"
462 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
463 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
464 LDFLAGS="${SAVE_LDFLAGS}"
465 ])
466 if test "$git_cv_ld_wl_rpath" = "yes"; then
467 CC_LD_DYNPATH=-Wl,-rpath,
468 else
469 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
470 SAVE_LDFLAGS="${LDFLAGS}"
471 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
472 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
473 LDFLAGS="${SAVE_LDFLAGS}"
474 ])
475 if test "$git_cv_ld_rpath" = "yes"; then
476 CC_LD_DYNPATH=-rpath
477 else
478 CC_LD_DYNPATH=
479 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
480 fi
481 fi
482 fi
483 GIT_CONF_SUBST([CC_LD_DYNPATH])
484 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
485 AC_CHECK_TOOLS(AR, [gar ar], :)
486 AC_CHECK_PROGS(TAR, [gtar tar])
487 AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
488 # TCLTK_PATH will be set to some value if we want Tcl/Tk
489 # or will be empty otherwise.
490 if test -n "$NO_TCLTK"; then
491 TCLTK_PATH=
492 else
493 if test "$with_tcltk" = ""; then
494 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
495 TCLTK_PATH=wish
496 elif test "$with_tcltk" = "yes"; then
497 # Tcl/Tk check requested.
498 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
499 else
500 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
501 TCLTK_PATH="$with_tcltk"
502 fi
503 fi
504 GIT_CONF_SUBST([TCLTK_PATH])
505 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
506 if test -n "$ASCIIDOC"; then
507 AC_MSG_CHECKING([for asciidoc version])
508 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
509 case "${asciidoc_version}" in
510 asciidoc' '8*)
511 AC_MSG_RESULT([${asciidoc_version}])
512 ;;
513 *)
514 AC_MSG_RESULT([${asciidoc_version} (unknown)])
515 ;;
516 esac
517 fi
519 if grep -a ascii configure.ac >/dev/null; then
520 AC_MSG_RESULT([Using 'grep -a' for sane_grep])
521 SANE_TEXT_GREP=-a
522 else
523 SANE_TEXT_GREP=
524 fi
525 GIT_CONF_SUBST([SANE_TEXT_GREP])
527 ## Checks for libraries.
528 AC_MSG_NOTICE([CHECKS for libraries])
529 #
530 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
531 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
533 GIT_STASH_FLAGS($OPENSSLDIR)
535 AC_CHECK_LIB([crypto], [SHA1_Init],
536 [NEEDS_SSL_WITH_CRYPTO=],
537 [AC_CHECK_LIB([ssl], [SHA1_Init],
538 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=],
539 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
541 GIT_UNSTASH_FLAGS($OPENSSLDIR)
543 GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO])
544 GIT_CONF_SUBST([NO_OPENSSL])
546 #
547 # Handle the USE_LIBPCRE1 and USE_LIBPCRE2 options potentially set
548 # above.
549 #
551 if test -n "$USE_LIBPCRE1"; then
553 GIT_STASH_FLAGS($LIBPCREDIR)
555 AC_CHECK_LIB([pcre], [pcre_version],
556 [USE_LIBPCRE1=YesPlease],
557 [USE_LIBPCRE1=])
559 GIT_UNSTASH_FLAGS($LIBPCREDIR)
561 GIT_CONF_SUBST([USE_LIBPCRE1])
563 fi
566 if test -n "$USE_LIBPCRE2"; then
568 GIT_STASH_FLAGS($LIBPCREDIR)
570 AC_CHECK_LIB([pcre2-8], [pcre2_config_8],
571 [USE_LIBPCRE2=YesPlease],
572 [USE_LIBPCRE2=])
574 GIT_UNSTASH_FLAGS($LIBPCREDIR)
576 GIT_CONF_SUBST([USE_LIBPCRE2])
578 fi
580 #
581 # Define NO_CURL if you do not have libcurl installed. git-http-pull and
582 # git-http-push are not built, and you cannot use http:// and https://
583 # transports.
585 GIT_STASH_FLAGS($CURLDIR)
587 AC_CHECK_LIB([curl], [curl_global_init],
588 [NO_CURL=],
589 [NO_CURL=YesPlease])
591 GIT_UNSTASH_FLAGS($CURLDIR)
593 GIT_CONF_SUBST([NO_CURL])
595 if test -z "$NO_CURL"; then
597 AC_CHECK_PROG([CURL_CONFIG], [curl-config],
598 [curl-config],
599 [no])
601 if test $CURL_CONFIG != no; then
602 GIT_CONF_SUBST([CURL_CONFIG])
603 if test -z "${NO_OPENSSL}"; then
604 AC_MSG_CHECKING([if Curl supports SSL])
605 if test $(curl-config --features|grep SSL) = SSL; then
606 NEEDS_SSL_WITH_CURL=YesPlease
607 AC_MSG_RESULT([yes])
608 else
609 NEEDS_SSL_WITH_CURL=
610 AC_MSG_RESULT([no])
611 fi
612 GIT_CONF_SUBST([NEEDS_SSL_WITH_CURL])
613 fi
614 fi
616 fi
619 #
620 # Define NO_EXPAT if you do not have expat installed. git-http-push is
621 # not built, and you cannot push using http:// and https:// transports.
623 GIT_STASH_FLAGS($EXPATDIR)
625 AC_CHECK_LIB([expat], [XML_ParserCreate],
626 [NO_EXPAT=],
627 [NO_EXPAT=YesPlease])
629 GIT_UNSTASH_FLAGS($EXPATDIR)
631 GIT_CONF_SUBST([NO_EXPAT])
633 #
634 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
635 # some Solaris installations).
636 # Define NO_ICONV if neither libc nor libiconv support iconv.
638 if test -z "$NO_ICONV"; then
640 GIT_STASH_FLAGS($ICONVDIR)
642 AC_DEFUN([ICONVTEST_SRC],
643 [AC_LANG_PROGRAM([#include <iconv.h>],
644 [iconv_open("", "");])])
646 if test -n "$ICONVDIR"; then
647 lib_order="-liconv -lc"
648 else
649 lib_order="-lc -liconv"
650 fi
652 NO_ICONV=YesPlease
654 for l in $lib_order; do
655 if test "$l" = "-liconv"; then
656 NEEDS_LIBICONV=YesPlease
657 else
658 NEEDS_LIBICONV=
659 fi
661 old_LIBS="$LIBS"
662 LIBS="$LIBS $l"
663 AC_MSG_CHECKING([for iconv in $l])
664 AC_LINK_IFELSE([ICONVTEST_SRC],
665 [AC_MSG_RESULT([yes])
666 NO_ICONV=
667 break],
668 [AC_MSG_RESULT([no])])
669 LIBS="$old_LIBS"
670 done
672 #in case of break
673 LIBS="$old_LIBS"
675 GIT_UNSTASH_FLAGS($ICONVDIR)
677 GIT_CONF_SUBST([NEEDS_LIBICONV])
678 GIT_CONF_SUBST([NO_ICONV])
680 if test -n "$NO_ICONV"; then
681 NEEDS_LIBICONV=
682 fi
684 fi
686 #
687 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
689 GIT_STASH_FLAGS($ZLIB_PATH)
691 AC_DEFUN([ZLIBTEST_SRC], [
692 AC_LANG_PROGRAM([#include <zlib.h>],
693 [deflateBound(0, 0);])])
694 AC_MSG_CHECKING([for deflateBound in -lz])
695 old_LIBS="$LIBS"
696 LIBS="$LIBS -lz"
697 AC_LINK_IFELSE([ZLIBTEST_SRC],
698 [AC_MSG_RESULT([yes])],
699 [AC_MSG_RESULT([no])
700 NO_DEFLATE_BOUND=yes])
701 LIBS="$old_LIBS"
703 GIT_UNSTASH_FLAGS($ZLIB_PATH)
705 GIT_CONF_SUBST([NO_DEFLATE_BOUND])
707 #
708 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
709 # Patrick Mauritz).
710 AC_CHECK_LIB([c], [socket],
711 [NEEDS_SOCKET=],
712 [NEEDS_SOCKET=YesPlease])
713 GIT_CONF_SUBST([NEEDS_SOCKET])
714 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
716 #
717 # The next few tests will define NEEDS_RESOLV if linking with
718 # libresolv provides some of the functions we would normally get
719 # from libc.
720 NEEDS_RESOLV=
721 #
722 # Define NO_INET_NTOP if linking with -lresolv is not enough.
723 # Solaris 2.7 in particular hos inet_ntop in -lresolv.
724 NO_INET_NTOP=
725 AC_CHECK_FUNC([inet_ntop],
726 [],
727 [AC_CHECK_LIB([resolv], [inet_ntop],
728 [NEEDS_RESOLV=YesPlease],
729 [NO_INET_NTOP=YesPlease])
730 ])
731 GIT_CONF_SUBST([NO_INET_NTOP])
732 #
733 # Define NO_INET_PTON if linking with -lresolv is not enough.
734 # Solaris 2.7 in particular hos inet_pton in -lresolv.
735 NO_INET_PTON=
736 AC_CHECK_FUNC([inet_pton],
737 [],
738 [AC_CHECK_LIB([resolv], [inet_pton],
739 [NEEDS_RESOLV=YesPlease],
740 [NO_INET_PTON=YesPlease])
741 ])
742 GIT_CONF_SUBST([NO_INET_PTON])
743 #
744 # Define NO_HSTRERROR if linking with -lresolv is not enough.
745 # Solaris 2.6 in particular has no hstrerror, even in -lresolv.
746 NO_HSTRERROR=
747 AC_CHECK_FUNC([hstrerror],
748 [],
749 [AC_CHECK_LIB([resolv], [hstrerror],
750 [NEEDS_RESOLV=YesPlease],
751 [NO_HSTRERROR=YesPlease])
752 ])
753 GIT_CONF_SUBST([NO_HSTRERROR])
755 dnl This must go after all the possible places for its initialization,
756 dnl in the AC_CHECK_FUNC invocations above.
757 GIT_CONF_SUBST([NEEDS_RESOLV])
758 #
759 # If any of the above tests determined that -lresolv is needed at
760 # build-time, also set it here for remaining configure-time checks.
761 test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
763 AC_CHECK_LIB([c], [basename],
764 [NEEDS_LIBGEN=],
765 [NEEDS_LIBGEN=YesPlease])
766 GIT_CONF_SUBST([NEEDS_LIBGEN])
767 test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
769 AC_CHECK_LIB([c], [gettext],
770 [LIBC_CONTAINS_LIBINTL=YesPlease],
771 [LIBC_CONTAINS_LIBINTL=])
772 GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL])
774 #
775 # Define NO_GETTEXT if you don't want Git output to be translated.
776 # A translated Git requires GNU libintl or another gettext implementation
777 AC_CHECK_HEADER([libintl.h],
778 [NO_GETTEXT=],
779 [NO_GETTEXT=YesPlease])
780 GIT_CONF_SUBST([NO_GETTEXT])
782 if test -z "$NO_GETTEXT"; then
783 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
784 fi
786 ## Checks for header files.
787 AC_MSG_NOTICE([CHECKS for header files])
788 #
789 # Define NO_SYS_SELECT_H if you don't have sys/select.h.
790 AC_CHECK_HEADER([sys/select.h],
791 [NO_SYS_SELECT_H=],
792 [NO_SYS_SELECT_H=UnfortunatelyYes])
793 GIT_CONF_SUBST([NO_SYS_SELECT_H])
794 #
795 # Define NO_SYS_POLL_H if you don't have sys/poll.h
796 AC_CHECK_HEADER([sys/poll.h],
797 [NO_SYS_POLL_H=],
798 [NO_SYS_POLL_H=UnfortunatelyYes])
799 GIT_CONF_SUBST([NO_SYS_POLL_H])
800 #
801 # Define NO_INTTYPES_H if you don't have inttypes.h
802 AC_CHECK_HEADER([inttypes.h],
803 [NO_INTTYPES_H=],
804 [NO_INTTYPES_H=UnfortunatelyYes])
805 GIT_CONF_SUBST([NO_INTTYPES_H])
806 #
807 # Define OLD_ICONV if your library has an old iconv(), where the second
808 # (input buffer pointer) parameter is declared with type (const char **).
809 AC_DEFUN([OLDICONVTEST_SRC], [
810 AC_LANG_PROGRAM([[
811 #include <iconv.h>
813 extern size_t iconv(iconv_t cd,
814 char **inbuf, size_t *inbytesleft,
815 char **outbuf, size_t *outbytesleft);
816 ]], [])])
818 GIT_STASH_FLAGS($ICONVDIR)
820 AC_MSG_CHECKING([for old iconv()])
821 AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
822 [AC_MSG_RESULT([no])],
823 [AC_MSG_RESULT([yes])
824 OLD_ICONV=UnfortunatelyYes])
826 GIT_UNSTASH_FLAGS($ICONVDIR)
828 GIT_CONF_SUBST([OLD_ICONV])
830 ## Checks for typedefs, structures, and compiler characteristics.
831 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
832 #
833 TYPE_SOCKLEN_T
834 case $ac_cv_type_socklen_t in
835 yes) SOCKLEN_T='';;
836 *) SOCKLEN_T=$git_cv_socklen_t_equiv;;
837 esac
838 GIT_CONF_SUBST([SOCKLEN_T])
840 #
841 # Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval.
842 AC_CHECK_TYPES([struct itimerval],
843 [NO_STRUCT_ITIMERVAL=],
844 [NO_STRUCT_ITIMERVAL=UnfortunatelyYes],
845 [#include <sys/time.h>])
846 GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL])
847 #
848 # Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists.
849 # Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor
850 # stat.st_mtimespec.tv_nsec exists.
851 AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec])
852 AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec])
853 if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then
854 USE_ST_TIMESPEC=YesPlease
855 GIT_CONF_SUBST([USE_ST_TIMESPEC])
856 elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then
857 NO_NSEC=YesPlease
858 GIT_CONF_SUBST([NO_NSEC])
859 fi
860 #
861 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
862 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
863 AC_CHECK_MEMBER(struct dirent.d_type,
864 [NO_D_TYPE_IN_DIRENT=],
865 [NO_D_TYPE_IN_DIRENT=YesPlease],
866 [#include <dirent.h>])
867 GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT])
868 #
869 # Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd
870 # in the C library.
871 AC_CHECK_MEMBER(struct passwd.pw_gecos,
872 [NO_GECOS_IN_PWENT=],
873 [NO_GECOS_IN_PWENT=YesPlease],
874 [#include <pwd.h>])
875 GIT_CONF_SUBST([NO_GECOS_IN_PWENT])
876 #
877 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
878 # sockaddr_storage.
879 AC_CHECK_TYPE(struct sockaddr_storage,
880 [NO_SOCKADDR_STORAGE=],
881 [NO_SOCKADDR_STORAGE=YesPlease],[
882 #include <sys/types.h>
883 #include <sys/socket.h>
884 ])
885 GIT_CONF_SUBST([NO_SOCKADDR_STORAGE])
886 #
887 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
888 AC_CHECK_TYPE([struct addrinfo],[
889 GIT_CHECK_FUNC([getaddrinfo],
890 [NO_IPV6=],
891 [NO_IPV6=YesPlease])
892 ],[NO_IPV6=YesPlease],[
893 #include <sys/types.h>
894 #include <sys/socket.h>
895 #include <netdb.h>
896 ])
897 GIT_CONF_SUBST([NO_IPV6])
898 #
899 # Define NO_REGEX if your C library lacks regex support with REG_STARTEND
900 # feature.
901 AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND],
902 [ac_cv_c_regex_with_reg_startend], [
903 AC_EGREP_CPP(yippeeyeswehaveit,
904 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
905 #include <regex.h>
906 ],
907 [#ifdef REG_STARTEND
908 yippeeyeswehaveit
909 #endif
910 ]),
911 [ac_cv_c_regex_with_reg_startend=yes],
912 [ac_cv_c_regex_with_reg_startend=no])
913 ])
914 if test $ac_cv_c_regex_with_reg_startend = yes; then
915 NO_REGEX=
916 else
917 NO_REGEX=YesPlease
918 fi
919 GIT_CONF_SUBST([NO_REGEX])
920 #
921 # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
922 # when attempting to read from an fopen'ed directory.
923 AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
924 [ac_cv_fread_reads_directories],
925 [
926 AC_RUN_IFELSE(
927 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
928 [[
929 FILE *f = fopen(".", "r");
930 return f != NULL;]])],
931 [ac_cv_fread_reads_directories=no],
932 [ac_cv_fread_reads_directories=yes])
933 ])
934 if test $ac_cv_fread_reads_directories = yes; then
935 FREAD_READS_DIRECTORIES=UnfortunatelyYes
936 else
937 FREAD_READS_DIRECTORIES=
938 fi
939 GIT_CONF_SUBST([FREAD_READS_DIRECTORIES])
940 #
941 # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
942 # or vsnprintf() return -1 instead of number of characters which would
943 # have been written to the final string if enough space had been available.
944 AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
945 [ac_cv_snprintf_returns_bogus],
946 [
947 AC_RUN_IFELSE(
948 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
949 #include "stdarg.h"
951 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
952 {
953 int ret;
954 va_list ap;
955 va_start(ap, format);
956 ret = vsnprintf(str, maxsize, format, ap);
957 va_end(ap);
958 return ret;
959 }],
960 [[char buf[6];
961 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
962 || strcmp(buf, "12")) return 1;
963 if (snprintf(buf, 3, "%s", "12345") != 5
964 || strcmp(buf, "12")) return 1]])],
965 [ac_cv_snprintf_returns_bogus=no],
966 [ac_cv_snprintf_returns_bogus=yes])
967 ])
968 if test $ac_cv_snprintf_returns_bogus = yes; then
969 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
970 else
971 SNPRINTF_RETURNS_BOGUS=
972 fi
973 GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS])
974 #
975 # Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type
976 # bits in mode values.
977 AC_CACHE_CHECK([whether the platform uses typical file type bits],
978 [ac_cv_sane_mode_bits], [
979 AC_EGREP_CPP(yippeeyeswehaveit,
980 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
981 [#if S_IFMT == 0170000 && \
982 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \
983 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \
984 S_IFIFO == 0010000 && S_IFSOCK == 0140000
985 yippeeyeswehaveit
986 #endif
987 ]),
988 [ac_cv_sane_mode_bits=yes],
989 [ac_cv_sane_mode_bits=no])
990 ])
991 if test $ac_cv_sane_mode_bits = yes; then
992 NEEDS_MODE_TRANSLATION=
993 else
994 NEEDS_MODE_TRANSLATION=UnfortunatelyYes
995 fi
996 GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION])
999 ## Checks for library functions.
1000 ## (in default C library and libraries checked by AC_CHECK_LIB)
1001 AC_MSG_NOTICE([CHECKS for library functions])
1002 #
1003 # Define NO_LIBGEN_H if you don't have libgen.h.
1004 AC_CHECK_HEADER([libgen.h],
1005 [NO_LIBGEN_H=],
1006 [NO_LIBGEN_H=YesPlease])
1007 GIT_CONF_SUBST([NO_LIBGEN_H])
1008 #
1009 # Define HAVE_PATHS_H if you have paths.h.
1010 AC_CHECK_HEADER([paths.h],
1011 [HAVE_PATHS_H=YesPlease],
1012 [HAVE_PATHS_H=])
1013 GIT_CONF_SUBST([HAVE_PATHS_H])
1014 #
1015 # Define HAVE_LIBCHARSET_H if have libcharset.h
1016 AC_CHECK_HEADER([libcharset.h],
1017 [HAVE_LIBCHARSET_H=YesPlease],
1018 [HAVE_LIBCHARSET_H=])
1019 GIT_CONF_SUBST([HAVE_LIBCHARSET_H])
1020 #
1021 # Define HAVE_STRINGS_H if you have strings.h
1022 AC_CHECK_HEADER([strings.h],
1023 [HAVE_STRINGS_H=YesPlease],
1024 [HAVE_STRINGS_H=])
1025 GIT_CONF_SUBST([HAVE_STRINGS_H])
1026 # Define CHARSET_LIB if libiconv does not export the locale_charset symbol
1027 # and libcharset does
1028 CHARSET_LIB=
1029 AC_CHECK_LIB([iconv], [locale_charset],
1030 [CHARSET_LIB=-liconv],
1031 [AC_CHECK_LIB([charset], [locale_charset],
1032 [CHARSET_LIB=-lcharset])])
1033 GIT_CONF_SUBST([CHARSET_LIB])
1034 #
1035 # Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.
1036 GIT_CHECK_FUNC(clock_gettime,
1037 [HAVE_CLOCK_GETTIME=YesPlease],
1038 [HAVE_CLOCK_GETTIME=])
1039 GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])
1041 AC_DEFUN([CLOCK_MONOTONIC_SRC], [
1042 AC_LANG_PROGRAM([[
1043 #include <time.h>
1044 clockid_t id = CLOCK_MONOTONIC;
1045 ]])])
1047 #
1048 # Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.
1049 AC_MSG_CHECKING([for CLOCK_MONOTONIC])
1050 AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],
1051 [AC_MSG_RESULT([yes])
1052 HAVE_CLOCK_MONOTONIC=YesPlease],
1053 [AC_MSG_RESULT([no])
1054 HAVE_CLOCK_MONOTONIC=])
1055 GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])
1056 #
1057 # Define NO_SETITIMER if you don't have setitimer.
1058 GIT_CHECK_FUNC(setitimer,
1059 [NO_SETITIMER=],
1060 [NO_SETITIMER=YesPlease])
1061 GIT_CONF_SUBST([NO_SETITIMER])
1062 #
1063 # Define NO_STRCASESTR if you don't have strcasestr.
1064 GIT_CHECK_FUNC(strcasestr,
1065 [NO_STRCASESTR=],
1066 [NO_STRCASESTR=YesPlease])
1067 GIT_CONF_SUBST([NO_STRCASESTR])
1068 #
1069 # Define NO_MEMMEM if you don't have memmem.
1070 GIT_CHECK_FUNC(memmem,
1071 [NO_MEMMEM=],
1072 [NO_MEMMEM=YesPlease])
1073 GIT_CONF_SUBST([NO_MEMMEM])
1074 #
1075 # Define NO_STRLCPY if you don't have strlcpy.
1076 GIT_CHECK_FUNC(strlcpy,
1077 [NO_STRLCPY=],
1078 [NO_STRLCPY=YesPlease])
1079 GIT_CONF_SUBST([NO_STRLCPY])
1080 #
1081 # Define NO_UINTMAX_T if your platform does not have uintmax_t
1082 AC_CHECK_TYPE(uintmax_t,
1083 [NO_UINTMAX_T=],
1084 [NO_UINTMAX_T=YesPlease],[
1085 #include <inttypes.h>
1086 ])
1087 GIT_CONF_SUBST([NO_UINTMAX_T])
1088 #
1089 # Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1090 GIT_CHECK_FUNC(strtoumax,
1091 [NO_STRTOUMAX=],
1092 [NO_STRTOUMAX=YesPlease])
1093 GIT_CONF_SUBST([NO_STRTOUMAX])
1094 #
1095 # Define NO_SETENV if you don't have setenv in the C library.
1096 GIT_CHECK_FUNC(setenv,
1097 [NO_SETENV=],
1098 [NO_SETENV=YesPlease])
1099 GIT_CONF_SUBST([NO_SETENV])
1100 #
1101 # Define NO_UNSETENV if you don't have unsetenv in the C library.
1102 GIT_CHECK_FUNC(unsetenv,
1103 [NO_UNSETENV=],
1104 [NO_UNSETENV=YesPlease])
1105 GIT_CONF_SUBST([NO_UNSETENV])
1106 #
1107 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1108 GIT_CHECK_FUNC(mkdtemp,
1109 [NO_MKDTEMP=],
1110 [NO_MKDTEMP=YesPlease])
1111 GIT_CONF_SUBST([NO_MKDTEMP])
1112 #
1113 # Define NO_INITGROUPS if you don't have initgroups in the C library.
1114 GIT_CHECK_FUNC(initgroups,
1115 [NO_INITGROUPS=],
1116 [NO_INITGROUPS=YesPlease])
1117 GIT_CONF_SUBST([NO_INITGROUPS])
1118 #
1119 # Define HAVE_GETDELIM if you have getdelim in the C library.
1120 GIT_CHECK_FUNC(getdelim,
1121 [HAVE_GETDELIM=YesPlease],
1122 [HAVE_GETDELIM=])
1123 GIT_CONF_SUBST([HAVE_GETDELIM])
1124 #
1125 #
1126 # Define NO_MMAP if you want to avoid mmap.
1127 #
1128 # Define NO_ICONV if your libc does not properly support iconv.
1130 AC_DEFUN([BSD_SYSCTL_SRC], [
1131 AC_LANG_PROGRAM([[
1132 #include <stddef.h>
1133 #include <sys/types.h>
1134 #include <sys/sysctl.h>
1135 ]],[[
1136 int val, mib[2];
1137 size_t len;
1138 mib[0] = CTL_HW;
1139 mib[1] = 1;
1140 len = sizeof(val);
1141 return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;
1142 ]])])
1144 #
1145 # Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.
1146 AC_MSG_CHECKING([for BSD sysctl])
1147 AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],
1148 [AC_MSG_RESULT([yes])
1149 HAVE_BSD_SYSCTL=YesPlease],
1150 [AC_MSG_RESULT([no])
1151 HAVE_BSD_SYSCTL=])
1152 GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
1154 ## Other checks.
1155 # Define USE_PIC if you need the main git objects to be built with -fPIC
1156 # in order to build and link perl/Git.so. x86-64 seems to need this.
1157 #
1158 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
1159 # Enable it on Windows. By default, symrefs are still used.
1160 #
1161 # Define NO_PTHREADS if we do not have pthreads.
1162 #
1163 # Define PTHREAD_LIBS to the linker flag used for Pthread support.
1164 AC_DEFUN([PTHREADTEST_SRC], [
1165 AC_LANG_PROGRAM([[
1166 #include <pthread.h>
1167 static void *noop(void *ignore) { return ignore; }
1168 ]], [[
1169 pthread_mutex_t test_mutex;
1170 pthread_key_t test_key;
1171 pthread_t th;
1172 int retcode = 0;
1173 void *ret = (void *)0;
1174 retcode |= pthread_key_create(&test_key, (void *)0);
1175 retcode |= pthread_mutex_init(&test_mutex,(void *)0);
1176 retcode |= pthread_mutex_lock(&test_mutex);
1177 retcode |= pthread_mutex_unlock(&test_mutex);
1178 retcode |= pthread_create(&th, ret, noop, ret);
1179 retcode |= pthread_join(th, &ret);
1180 return retcode;
1181 ]])])
1183 dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1184 dnl [[#include <pthread.h>]],
1185 dnl [[pthread_mutex_t test_mutex;]]
1186 dnl )])
1188 NO_PTHREADS=UnfortunatelyYes
1189 PTHREAD_LIBS=
1191 if test -n "$USER_NOPTHREAD"; then
1192 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1193 # handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1194 # -D_REENTRANT' or some such.
1195 elif test -z "$PTHREAD_CFLAGS"; then
1196 threads_found=no
1197 # Attempt to compile and link some code using pthreads to determine
1198 # required linker flags. The order is somewhat important here: We
1199 # first try it without any extra flags, to catch systems where
1200 # pthreads are part of the C library, then go on testing various other
1201 # flags. We do so to avoid false positives. For example, on Mac OS X
1202 # pthreads are part of the C library; moreover, the compiler allows us
1203 # to add "-mt" to the CFLAGS (although it will do nothing except
1204 # trigger a warning about an unused flag). Hence if we checked for
1205 # "-mt" before "" we would end up picking it. But unfortunately this
1206 # would then trigger compiler warnings on every single file we compile.
1207 for opt in "" -mt -pthread -lpthread; do
1208 old_CFLAGS="$CFLAGS"
1209 old_LIBS="$LIBS"
1210 case "$opt" in
1211 -l*) LIBS="$opt $LIBS" ;;
1212 *) CFLAGS="$opt $CFLAGS" ;;
1213 esac
1215 AC_MSG_CHECKING([for POSIX Threads with '$opt'])
1216 AC_LINK_IFELSE([PTHREADTEST_SRC],
1217 [AC_MSG_RESULT([yes])
1218 NO_PTHREADS=
1219 PTHREAD_LIBS="$opt"
1220 PTHREAD_CFLAGS="$opt"
1221 threads_found=yes
1222 break
1223 ],
1224 [AC_MSG_RESULT([no])])
1225 CFLAGS="$old_CFLAGS"
1226 LIBS="$old_LIBS"
1227 done
1228 if test $threads_found != yes; then
1229 AC_CHECK_LIB([pthread], [pthread_create],
1230 [PTHREAD_LIBS="-lpthread"],
1231 [NO_PTHREADS=UnfortunatelyYes])
1232 fi
1233 else
1234 old_CFLAGS="$CFLAGS"
1235 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1236 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])
1237 AC_LINK_IFELSE([PTHREADTEST_SRC],
1238 [AC_MSG_RESULT([yes])
1239 NO_PTHREADS=
1240 PTHREAD_LIBS="$PTHREAD_CFLAGS"
1241 ],
1242 [AC_MSG_RESULT([no])])
1244 CFLAGS="$old_CFLAGS"
1245 fi
1247 CFLAGS="$old_CFLAGS"
1249 GIT_CONF_SUBST([PTHREAD_CFLAGS])
1250 GIT_CONF_SUBST([PTHREAD_LIBS])
1251 GIT_CONF_SUBST([NO_PTHREADS])
1253 ## Output files
1254 AC_CONFIG_FILES(["${config_file}":"${config_in}"])
1255 AC_OUTPUT