Improve accuracy of check for presence of deflateBound.
[git/git.git] / configure.ac
1 # -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
3
4 AC_PREREQ(2.59)
5 AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
6
7 AC_CONFIG_SRCDIR([git.c])
8
9 config_file=config.mak.autogen
10 config_append=config.mak.append
11 config_in=config.mak.in
12
13 echo "# ${config_append}. Generated by configure." > "${config_append}"
14
15
16 ## Definitions of macros
17 # GIT_CONF_APPEND_LINE(LINE)
18 # --------------------------
19 # Append LINE to file ${config_append}
20 AC_DEFUN([GIT_CONF_APPEND_LINE],
21 [echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE
22 #
23 # GIT_ARG_SET_PATH(PROGRAM)
24 # -------------------------
25 # Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
26 AC_DEFUN([GIT_ARG_SET_PATH],
27 [AC_ARG_WITH([$1],
28 [AS_HELP_STRING([--with-$1=PATH],
29 [provide PATH to $1])],
30 [GIT_CONF_APPEND_PATH($1)],[])
31 ])# GIT_ARG_SET_PATH
32 #
33 # GIT_CONF_APPEND_PATH(PROGRAM)
34 # ------------------------------
35 # Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
36 # Used by GIT_ARG_SET_PATH(PROGRAM)
37 AC_DEFUN([GIT_CONF_APPEND_PATH],
38 [PROGRAM=m4_toupper($1); \
39 if test "$withval" = "no"; then \
40 AC_MSG_ERROR([You cannot use git without $1]); \
41 else \
42 if test "$withval" = "yes"; then \
43 AC_MSG_WARN([You should provide path for --with-$1=PATH]); \
44 else \
45 GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \
46 fi; \
47 fi; \
48 ]) # GIT_CONF_APPEND_PATH
49 #
50 # GIT_PARSE_WITH(PACKAGE)
51 # -----------------------
52 # For use in AC_ARG_WITH action-if-found, for packages default ON.
53 # * Set NO_PACKAGE=YesPlease for --without-PACKAGE
54 # * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
55 # * Unset NO_PACKAGE for --with-PACKAGE without ARG
56 AC_DEFUN([GIT_PARSE_WITH],
57 [PACKAGE=m4_toupper($1); \
58 if test "$withval" = "no"; then \
59 m4_toupper(NO_$1)=YesPlease; \
60 elif test "$withval" = "yes"; then \
61 m4_toupper(NO_$1)=; \
62 else \
63 m4_toupper(NO_$1)=; \
64 GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval); \
65 fi \
66 ])# GIT_PARSE_WITH
67
68
69 ## Site configuration related to programs (before tests)
70 ## --with-PACKAGE[=ARG] and --without-PACKAGE
71 #
72 # Set lib to alternative name of lib directory (e.g. lib64)
73 AC_ARG_WITH([lib],
74 [AS_HELP_STRING([--with-lib=ARG],
75 [ARG specifies alternative name for lib directory])],
76 [if test "$withval" = "no" -o "$withval" = "yes"; then \
77 AC_MSG_WARN([You should provide name for --with-lib=ARG]); \
78 else \
79 GIT_CONF_APPEND_LINE(lib=$withval); \
80 fi; \
81 ],[])
82 #
83 # Define SHELL_PATH to provide path to shell.
84 GIT_ARG_SET_PATH(shell)
85 #
86 # Define PERL_PATH to provide path to Perl.
87 GIT_ARG_SET_PATH(perl)
88 #
89 # Define ZLIB_PATH to provide path to zlib.
90 GIT_ARG_SET_PATH(zlib)
91 #
92 # Declare the with-tcltk/without-tcltk options.
93 AC_ARG_WITH(tcltk,
94 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
95 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
96 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
97 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),\
98 GIT_PARSE_WITH(tcltk))
99 #
100
101
102 ## Checks for programs.
103 AC_MSG_NOTICE([CHECKS for programs])
104 #
105 AC_PROG_CC([cc gcc])
106 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
107 AC_CHECK_TOOLS(AR, [gar ar], :)
108 AC_CHECK_PROGS(TAR, [gtar tar])
109 # TCLTK_PATH will be set to some value if we want Tcl/Tk
110 # or will be empty otherwise.
111 if test -z "$NO_TCLTK"; then
112 if test "$with_tcltk" = ""; then
113 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
114 TCLTK_PATH=wish
115 AC_SUBST(TCLTK_PATH)
116 elif test "$with_tcltk" = "yes"; then
117 # Tcl/Tk check requested.
118 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
119 else
120 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
121 TCLTK_PATH="$with_tcltk"
122 AC_SUBST(TCLTK_PATH)
123 fi
124 fi
125
126 ## Checks for libraries.
127 AC_MSG_NOTICE([CHECKS for libraries])
128 #
129 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
130 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
131 AC_CHECK_LIB([crypto], [SHA1_Init],
132 [NEEDS_SSL_WITH_CRYPTO=],
133 [AC_CHECK_LIB([ssl], [SHA1_Init],
134 [NEEDS_SSL_WITH_CRYPTO=YesPlease
135 NEEDS_SSL_WITH_CRYPTO=],
136 [NO_OPENSSL=YesPlease])])
137 AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
138 AC_SUBST(NO_OPENSSL)
139 #
140 # Define NO_CURL if you do not have curl installed. git-http-pull and
141 # git-http-push are not built, and you cannot use http:// and https://
142 # transports.
143 AC_CHECK_LIB([curl], [curl_global_init],
144 [NO_CURL=],
145 [NO_CURL=YesPlease])
146 AC_SUBST(NO_CURL)
147 #
148 # Define NO_EXPAT if you do not have expat installed. git-http-push is
149 # not built, and you cannot push using http:// and https:// transports.
150 AC_CHECK_LIB([expat], [XML_ParserCreate],
151 [NO_EXPAT=],
152 [NO_EXPAT=YesPlease])
153 AC_SUBST(NO_EXPAT)
154 #
155 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
156 # some Solaris installations).
157 # Define NO_ICONV if neither libc nor libiconv support iconv.
158 AC_DEFUN([ICONVTEST_SRC], [
159 #include <iconv.h>
160
161 int main(void)
162 {
163 iconv_open("", "");
164 return 0;
165 }
166 ])
167 AC_MSG_CHECKING([for iconv in -lc])
168 AC_LINK_IFELSE(ICONVTEST_SRC,
169 [AC_MSG_RESULT([yes])
170 NEEDS_LIBICONV=],
171 [AC_MSG_RESULT([no])
172 old_LIBS="$LIBS"
173 LIBS="$LIBS -liconv"
174 AC_MSG_CHECKING([for iconv in -liconv])
175 AC_LINK_IFELSE(ICONVTEST_SRC,
176 [AC_MSG_RESULT([yes])
177 NEEDS_LIBICONV=YesPlease],
178 [AC_MSG_RESULT([no])
179 NO_ICONV=YesPlease])
180 LIBS="$old_LIBS"])
181 AC_SUBST(NEEDS_LIBICONV)
182 AC_SUBST(NO_ICONV)
183 test -n "$NEEDS_LIBICONV" && LIBS="$LIBS -liconv"
184 #
185 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
186 AC_DEFUN([ZLIBTEST_SRC], [
187 #include <zlib.h>
188
189 int main(void)
190 {
191 deflateBound(0, 0);
192 return 0;
193 }
194 ])
195 AC_MSG_CHECKING([for deflateBound in -lz])
196 old_LIBS="$LIBS"
197 LIBS="$LIBS -lz"
198 AC_LINK_IFELSE(ZLIBTEST_SRC,
199 [AC_MSG_RESULT([yes])],
200 [AC_MSG_RESULT([no])
201 NO_DEFLATE_BOUND=yes])
202 LIBS="$old_LIBS"
203 AC_SUBST(NO_DEFLATE_BOUND)
204 #
205 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
206 # Patrick Mauritz).
207 AC_CHECK_LIB([c], [socket],
208 [NEEDS_SOCKET=],
209 [NEEDS_SOCKET=YesPlease])
210 AC_SUBST(NEEDS_SOCKET)
211 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
212
213
214 ## Checks for header files.
215
216
217 ## Checks for typedefs, structures, and compiler characteristics.
218 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
219 #
220 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
221 AC_CHECK_MEMBER(struct dirent.d_ino,
222 [NO_D_INO_IN_DIRENT=],
223 [NO_D_INO_IN_DIRENT=YesPlease],
224 [#include <dirent.h>])
225 AC_SUBST(NO_D_INO_IN_DIRENT)
226 #
227 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
228 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
229 AC_CHECK_MEMBER(struct dirent.d_type,
230 [NO_D_TYPE_IN_DIRENT=],
231 [NO_D_TYPE_IN_DIRENT=YesPlease],
232 [#include <dirent.h>])
233 AC_SUBST(NO_D_TYPE_IN_DIRENT)
234 #
235 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
236 # sockaddr_storage.
237 AC_CHECK_TYPE(struct sockaddr_storage,
238 [NO_SOCKADDR_STORAGE=],
239 [NO_SOCKADDR_STORAGE=YesPlease],[
240 #include <sys/types.h>
241 #include <sys/socket.h>
242 ])
243 AC_SUBST(NO_SOCKADDR_STORAGE)
244 #
245 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
246 AC_CHECK_TYPE([struct addrinfo],[
247 AC_CHECK_FUNC([getaddrinfo],
248 [NO_IPV6=],
249 [NO_IPV6=YesPlease])
250 ],[NO_IPV6=YesPlease],[
251 #include <sys/types.h>
252 #include <sys/socket.h>
253 #include <netdb.h>
254 ])
255 AC_SUBST(NO_IPV6)
256 #
257 # Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
258 # do not support the 'size specifiers' introduced by C99, namely ll, hh,
259 # j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
260 # some C compilers supported these specifiers prior to C99 as an extension.
261 AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers],
262 [ac_cv_c_c99_format],
263 [# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
264 AC_RUN_IFELSE(
265 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
266 [[char buf[64];
267 if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
268 exit(1);
269 else if (strcmp(buf, "12345"))
270 exit(2);]])],
271 [ac_cv_c_c99_format=yes],
272 [ac_cv_c_c99_format=no])
273 ])
274 if test $ac_cv_c_c99_format = no; then
275 NO_C99_FORMAT=YesPlease
276 else
277 NO_C99_FORMAT=
278 fi
279 AC_SUBST(NO_C99_FORMAT)
280
281
282 ## Checks for library functions.
283 ## (in default C library and libraries checked by AC_CHECK_LIB)
284 AC_MSG_NOTICE([CHECKS for library functions])
285 #
286 # Define NO_STRCASESTR if you don't have strcasestr.
287 AC_CHECK_FUNC(strcasestr,
288 [NO_STRCASESTR=],
289 [NO_STRCASESTR=YesPlease])
290 AC_SUBST(NO_STRCASESTR)
291 #
292 # Define NO_STRLCPY if you don't have strlcpy.
293 AC_CHECK_FUNC(strlcpy,
294 [NO_STRLCPY=],
295 [NO_STRLCPY=YesPlease])
296 AC_SUBST(NO_STRLCPY)
297 #
298 # Define NO_SETENV if you don't have setenv in the C library.
299 AC_CHECK_FUNC(setenv,
300 [NO_SETENV=],
301 [NO_SETENV=YesPlease])
302 AC_SUBST(NO_SETENV)
303 #
304 # Define NO_MMAP if you want to avoid mmap.
305 #
306 # Define NO_ICONV if your libc does not properly support iconv.
307
308
309 ## Other checks.
310 # Define USE_PIC if you need the main git objects to be built with -fPIC
311 # in order to build and link perl/Git.so. x86-64 seems to need this.
312 #
313 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
314 # Enable it on Windows. By default, symrefs are still used.
315
316 ## Site configuration (override autodetection)
317 ## --with-PACKAGE[=ARG] and --without-PACKAGE
318 AC_MSG_NOTICE([CHECKS for site configuration])
319 #
320 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
321 # tests. These tests take up a significant amount of the total test time
322 # but are not needed unless you plan to talk to SVN repos.
323 #
324 # Define MOZILLA_SHA1 environment variable when running make to make use of
325 # a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast
326 # on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default
327 # choice) has very fast version optimized for i586.
328 #
329 # Define PPC_SHA1 environment variable when running make to make use of
330 # a bundled SHA1 routine optimized for PowerPC.
331 #
332 # Define ARM_SHA1 environment variable when running make to make use of
333 # a bundled SHA1 routine optimized for ARM.
334 #
335 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
336 # This also implies MOZILLA_SHA1.
337 #
338 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
339 # /foo/bar/include and /foo/bar/lib directories.
340 AC_ARG_WITH(openssl,
341 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
342 AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),\
343 GIT_PARSE_WITH(openssl))
344 #
345 # Define NO_CURL if you do not have curl installed. git-http-pull and
346 # git-http-push are not built, and you cannot use http:// and https://
347 # transports.
348 #
349 # Define CURLDIR=/foo/bar if your curl header and library files are in
350 # /foo/bar/include and /foo/bar/lib directories.
351 AC_ARG_WITH(curl,
352 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
353 AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
354 GIT_PARSE_WITH(curl))
355 #
356 # Define NO_EXPAT if you do not have expat installed. git-http-push is
357 # not built, and you cannot push using http:// and https:// transports.
358 #
359 # Define EXPATDIR=/foo/bar if your expat header and library files are in
360 # /foo/bar/include and /foo/bar/lib directories.
361 AC_ARG_WITH(expat,
362 AS_HELP_STRING([--with-expat],
363 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
364 AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
365 GIT_PARSE_WITH(expat))
366 #
367 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
368 # installed in /sw, but don't want GIT to link against any libraries
369 # installed there. If defined you may specify your own (or Fink's)
370 # include directories and library directories by defining CFLAGS
371 # and LDFLAGS appropriately.
372 #
373 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
374 # have DarwinPorts installed in /opt/local, but don't want GIT to
375 # link against any libraries installed there. If defined you may
376 # specify your own (or DarwinPort's) include directories and
377 # library directories by defining CFLAGS and LDFLAGS appropriately.
378 #
379 # Define NO_MMAP if you want to avoid mmap.
380 #
381 # Define NO_ICONV if your libc does not properly support iconv.
382 AC_ARG_WITH(iconv,
383 AS_HELP_STRING([--without-iconv],
384 [if your architecture doesn't properly support iconv])
385 AS_HELP_STRING([--with-iconv=PATH],
386 [PATH is prefix for libiconv library and headers])
387 AS_HELP_STRING([],
388 [used only if you need linking with libiconv]),
389 GIT_PARSE_WITH(iconv))
390
391 ## --enable-FEATURE[=ARG] and --disable-FEATURE
392 #
393 # Define USE_NSEC below if you want git to care about sub-second file mtimes
394 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
395 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
396 # randomly break unless your underlying filesystem supports those sub-second
397 # times (my ext3 doesn't).
398 #
399 # Define USE_STDEV below if you want git to care about the underlying device
400 # change being considered an inode change from the update-cache perspective.
401
402
403 ## Output files
404 AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
405 AC_OUTPUT
406
407
408 ## Cleanup
409 rm -f "${config_append}"