Improve accuracy of check for presence of deflateBound.
[git/git.git] / configure.ac
CommitLineData
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1# -*- Autoconf -*-
2# Process this file with autoconf to produce a configure script.
3
4AC_PREREQ(2.59)
3900145e 5AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
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6
7AC_CONFIG_SRCDIR([git.c])
8
9config_file=config.mak.autogen
d3a6db98 10config_append=config.mak.append
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11config_in=config.mak.in
12
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13echo "# ${config_append}. Generated by configure." > "${config_append}"
14
15
16## Definitions of macros
17# GIT_CONF_APPEND_LINE(LINE)
18# --------------------------
19# Append LINE to file ${config_append}
20AC_DEFUN([GIT_CONF_APPEND_LINE],
21[echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE
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22#
23# GIT_ARG_SET_PATH(PROGRAM)
24# -------------------------
25# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
26AC_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)
37AC_DEFUN([GIT_CONF_APPEND_PATH],
38[PROGRAM=m4_toupper($1); \
39if test "$withval" = "no"; then \
b52b1d43 40 AC_MSG_ERROR([You cannot use git without $1]); \
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41else \
42 if test "$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; \
47fi; \
48]) # GIT_CONF_APPEND_PATH
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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
56AC_DEFUN([GIT_PARSE_WITH],
57[PACKAGE=m4_toupper($1); \
58if test "$withval" = "no"; then \
59 m4_toupper(NO_$1)=YesPlease; \
60elif test "$withval" = "yes"; then \
61 m4_toupper(NO_$1)=; \
62else \
63 m4_toupper(NO_$1)=; \
64 GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval); \
65fi \
66])# GIT_PARSE_WITH
d3a6db98 67
633b4239 68
a20b4d89 69## Site configuration related to programs (before tests)
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70## --with-PACKAGE[=ARG] and --without-PACKAGE
71#
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72# Set lib to alternative name of lib directory (e.g. lib64)
73AC_ARG_WITH([lib],
74 [AS_HELP_STRING([--with-lib=ARG],
75 [ARG specifies alternative name for lib directory])],
76 [if test "$withval" = "no" -o "$withval" = "yes"; then \
77 AC_MSG_WARN([You should provide name for --with-lib=ARG]); \
78else \
79 GIT_CONF_APPEND_LINE(lib=$withval); \
80fi; \
81],[])
82#
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83# Define SHELL_PATH to provide path to shell.
84GIT_ARG_SET_PATH(shell)
85#
86# Define PERL_PATH to provide path to Perl.
87GIT_ARG_SET_PATH(perl)
88#
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89# Define ZLIB_PATH to provide path to zlib.
90GIT_ARG_SET_PATH(zlib)
91#
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92# Declare the with-tcltk/without-tcltk options.
93AC_ARG_WITH(tcltk,
94AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
95AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
96AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
97AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),\
98GIT_PARSE_WITH(tcltk))
99#
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100
101
633b4239 102## Checks for programs.
fd22c027 103AC_MSG_NOTICE([CHECKS for programs])
f6719572 104#
60a144f2 105AC_PROG_CC([cc gcc])
fd22c027 106#AC_PROG_INSTALL # needs install-sh or install.sh in sources
96e24abc 107AC_CHECK_TOOLS(AR, [gar ar], :)
fd22c027 108AC_CHECK_PROGS(TAR, [gtar tar])
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109# TCLTK_PATH will be set to some value if we want Tcl/Tk
110# or will be empty otherwise.
111if 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], )
68daee08 119 else
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120 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
121 TCLTK_PATH="$with_tcltk"
122 AC_SUBST(TCLTK_PATH)
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123 fi
124fi
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125
126## Checks for libraries.
ebdf5321 127AC_MSG_NOTICE([CHECKS for libraries])
f6719572 128#
633b4239 129# Define NO_OPENSSL environment variable if you do not have OpenSSL.
ebdf5321 130# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
d5c31a1c 131AC_CHECK_LIB([crypto], [SHA1_Init],
424adc50 132[NEEDS_SSL_WITH_CRYPTO=],
3068f6c4 133[AC_CHECK_LIB([ssl], [SHA1_Init],
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134 [NEEDS_SSL_WITH_CRYPTO=YesPlease
135 NEEDS_SSL_WITH_CRYPTO=],
136 [NO_OPENSSL=YesPlease])])
137AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
138AC_SUBST(NO_OPENSSL)
f6719572 139#
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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.
d5c31a1c 143AC_CHECK_LIB([curl], [curl_global_init],
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144[NO_CURL=],
145[NO_CURL=YesPlease])
146AC_SUBST(NO_CURL)
f6719572 147#
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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.
d5c31a1c 150AC_CHECK_LIB([expat], [XML_ParserCreate],
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151[NO_EXPAT=],
152[NO_EXPAT=YesPlease])
153AC_SUBST(NO_EXPAT)
f6719572 154#
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155# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
156# some Solaris installations).
6ff88de7 157# Define NO_ICONV if neither libc nor libiconv support iconv.
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158AC_DEFUN([ICONVTEST_SRC], [
159#include <iconv.h>
160
161int main(void)
162{
163 iconv_open("", "");
164 return 0;
165}
166])
167AC_MSG_CHECKING([for iconv in -lc])
168AC_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="$old_LIBS"])
424adc50 181AC_SUBST(NEEDS_LIBICONV)
baf1219a 182AC_SUBST(NO_ICONV)
825b045f 183test -n "$NEEDS_LIBICONV" && LIBS="$LIBS -liconv"
f6719572 184#
609a2289
DS
185# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
186AC_DEFUN([ZLIBTEST_SRC], [
187#include <zlib.h>
188
189int main(void)
190{
191 deflateBound(0, 0);
192 return 0;
193}
194])
195AC_MSG_CHECKING([for deflateBound in -lz])
196old_LIBS="$LIBS"
197LIBS="$LIBS -lz"
198AC_LINK_IFELSE(ZLIBTEST_SRC,
199 [AC_MSG_RESULT([yes])],
200 [AC_MSG_RESULT([no])
201 NO_DEFLATE_BOUND=yes])
202LIBS="$old_LIBS"
203AC_SUBST(NO_DEFLATE_BOUND)
204#
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205# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
206# Patrick Mauritz).
d5c31a1c 207AC_CHECK_LIB([c], [socket],
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208[NEEDS_SOCKET=],
209[NEEDS_SOCKET=YesPlease])
210AC_SUBST(NEEDS_SOCKET)
d1b9944d 211test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
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212
213
214## Checks for header files.
215
216
217## Checks for typedefs, structures, and compiler characteristics.
eb0f255d 218AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
f6719572 219#
633b4239 220# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
d5c31a1c 221AC_CHECK_MEMBER(struct dirent.d_ino,
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222[NO_D_INO_IN_DIRENT=],
223[NO_D_INO_IN_DIRENT=YesPlease],
eb0f255d 224[#include <dirent.h>])
424adc50 225AC_SUBST(NO_D_INO_IN_DIRENT)
f6719572 226#
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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).
d5c31a1c 229AC_CHECK_MEMBER(struct dirent.d_type,
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230[NO_D_TYPE_IN_DIRENT=],
231[NO_D_TYPE_IN_DIRENT=YesPlease],
eb0f255d 232[#include <dirent.h>])
424adc50 233AC_SUBST(NO_D_TYPE_IN_DIRENT)
f6719572 234#
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235# Define NO_SOCKADDR_STORAGE if your platform does not have struct
236# sockaddr_storage.
d5c31a1c 237AC_CHECK_TYPE(struct sockaddr_storage,
424adc50 238[NO_SOCKADDR_STORAGE=],
ab5573ae
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239[NO_SOCKADDR_STORAGE=YesPlease],[
240#include <sys/types.h>
241#include <sys/socket.h>
242])
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243AC_SUBST(NO_SOCKADDR_STORAGE)
244#
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245# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
246AC_CHECK_TYPE([struct addrinfo],[
d5c31a1c 247 AC_CHECK_FUNC([getaddrinfo],
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248 [NO_IPV6=],
249 [NO_IPV6=YesPlease])
250],[NO_IPV6=YesPlease],[
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251#include <sys/types.h>
252#include <sys/socket.h>
253#include <netdb.h>
254])
424adc50 255AC_SUBST(NO_IPV6)
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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.
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261AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers],
262 [ac_cv_c_c99_format],
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263[# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
264AC_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])
274if test $ac_cv_c_c99_format = no; then
424adc50 275 NO_C99_FORMAT=YesPlease
d5c31a1c 276else
424adc50 277 NO_C99_FORMAT=
656517b9 278fi
424adc50 279AC_SUBST(NO_C99_FORMAT)
633b4239 280
a20b4d89 281
633b4239 282## Checks for library functions.
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283## (in default C library and libraries checked by AC_CHECK_LIB)
284AC_MSG_NOTICE([CHECKS for library functions])
f6719572 285#
633b4239 286# Define NO_STRCASESTR if you don't have strcasestr.
d5c31a1c 287AC_CHECK_FUNC(strcasestr,
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288[NO_STRCASESTR=],
289[NO_STRCASESTR=YesPlease])
290AC_SUBST(NO_STRCASESTR)
f6719572 291#
633b4239 292# Define NO_STRLCPY if you don't have strlcpy.
d5c31a1c 293AC_CHECK_FUNC(strlcpy,
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294[NO_STRLCPY=],
295[NO_STRLCPY=YesPlease])
296AC_SUBST(NO_STRLCPY)
f6719572 297#
633b4239 298# Define NO_SETENV if you don't have setenv in the C library.
d5c31a1c 299AC_CHECK_FUNC(setenv,
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300[NO_SETENV=],
301[NO_SETENV=YesPlease])
302AC_SUBST(NO_SETENV)
f6719572 303#
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304# Define NO_MMAP if you want to avoid mmap.
305#
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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.
633b4239 315
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316## Site configuration (override autodetection)
317## --with-PACKAGE[=ARG] and --without-PACKAGE
318AC_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.
340AC_ARG_WITH(openssl,
341AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
342AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),\
343GIT_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.
351AC_ARG_WITH(curl,
352AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
353AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
354GIT_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.
361AC_ARG_WITH(expat,
362AS_HELP_STRING([--with-expat],
363[support git-push using http:// and https:// transports via WebDAV (default is YES)])
364AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
365GIT_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.
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380#
381# Define NO_ICONV if your libc does not properly support iconv.
382AC_ARG_WITH(iconv,
383AS_HELP_STRING([--without-iconv],
384[if your architecture doesn't properly support iconv])
385AS_HELP_STRING([--with-iconv=PATH],
386[PATH is prefix for libiconv library and headers])
387AS_HELP_STRING([],
388[used only if you need linking with libiconv]),
389GIT_PARSE_WITH(iconv))
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390
391## --enable-FEATURE[=ARG] and --disable-FEATURE
392#
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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
633b4239 403## Output files
d3a6db98 404AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
55667714 405AC_OUTPUT
d3a6db98 406
f6719572 407
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408## Cleanup
409rm -f "${config_append}"