Merge branch 'jn/conf'

5 files changed, 229 insertions, 37 deletions

diff --git a/.gitignore b/.gitignore
index fb0fa3f16a..6e973b3d4b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -140,7 +140,7 @@ config.mak
 autom4te.cache
 config.log
 config.status
-config.mak.in
 config.mak.autogen
+config.mak.append
 configure
 git-blame
diff --git a/INSTALL b/INSTALL
index ba9778cd4d..fa9bf74a20 100644
--- a/INSTALL
+++ b/INSTALL
@@ -16,7 +16,7 @@ install" would not work.
 Alternatively you can use autoconf generated ./configure script to
 set up install paths (via config.mak.autogen), so you can write instead
 
-	$ autoconf ;# as yourself if ./configure doesn't exist yet
+	$ make configure ;# as yourself
 	$ ./configure --prefix=/usr ;# as yourself
 	$ make all doc ;# as yourself
 	# make install install-doc ;# as root
diff --git a/Makefile b/Makefile
index a3ba585cee..f9f7660cf1 100644
--- a/Makefile
+++ b/Makefile
@@ -27,7 +27,7 @@ all:
 # Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
 # do not support the 'size specifiers' introduced by C99, namely ll, hh,
 # j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
-# some c compilers supported these specifiers prior to C99 as an extension.
+# some C compilers supported these specifiers prior to C99 as an extension.
 #
 # Define NO_STRCASESTR if you don't have strcasestr.
 #
@@ -616,6 +616,13 @@ git-instaweb: git-instaweb.sh gitweb/gitweb.cgi gitweb/gitweb.css
 	chmod +x $@+
 	mv $@+ $@
 
+configure: configure.ac
+	rm -f $@ $<+
+	sed -e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
+	    $< > $<+
+	autoconf -o $@ $<+
+	rm -f $<+
+
 # These can record GIT_VERSION
 git$X git.spec \
 	$(patsubst %.sh,%,$(SCRIPT_SH)) \
@@ -807,7 +814,7 @@ clean:
 	rm -f $(ALL_PROGRAMS) $(BUILT_INS) git$X
 	rm -f *.spec *.pyc *.pyo */*.pyc */*.pyo common-cmds.h TAGS tags
 	rm -rf autom4te.cache
-	rm -f config.log config.mak.autogen configure config.status config.cache
+	rm -f configure config.log config.mak.autogen config.mak.append config.status config.cache
 	rm -rf $(GIT_TARNAME) .doc-tmp-dir
 	rm -f $(GIT_TARNAME).tar.gz git-core_$(GIT_VERSION)-*.tar.gz
 	rm -f $(htmldocs).tar.gz $(manpages).tar.gz
diff --git a/config.mak.in b/config.mak.in
index 04f508ab90..369e6116e0 100644
--- a/config.mak.in
+++ b/config.mak.in
@@ -22,3 +22,19 @@ VPATH = @srcdir@
 export exec_prefix mandir
 export srcdir VPATH
 
+NO_PYTHON=@NO_PYTHON@
+NEEDS_SSL_WITH_CRYPTO=@NEEDS_SSL_WITH_CRYPTO@
+NO_OPENSSL=@NO_OPENSSL@
+NO_CURL=@NO_CURL@
+NO_EXPAT=@NO_EXPAT@
+NEEDS_LIBICONV=@NEEDS_LIBICONV@
+NEEDS_SOCKET=@NEEDS_SOCKET@
+NO_D_INO_IN_DIRENT=@NO_D_INO_IN_DIRENT@
+NO_D_TYPE_IN_DIRENT=@NO_D_TYPE_IN_DIRENT@
+NO_SOCKADDR_STORAGE=@NO_SOCKADDR_STORAGE@
+NO_IPV6=@NO_IPV6@
+NO_C99_FORMAT=@NO_C99_FORMAT@
+NO_STRCASESTR=@NO_STRCASESTR@
+NO_STRLCPY=@NO_STRLCPY@
+NO_SETENV=@NO_SETENV@
+
diff --git a/configure.ac b/configure.ac
index a9c88c6a4d..e890131c46 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.59)
-AC_INIT([git], [1.4.2], [git@vger.kernel.org])
+AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
 
 AC_CONFIG_SRCDIR([git.c])
 
@@ -19,6 +19,77 @@ echo "# ${config_append}.  Generated by configure." > "${config_append}"
 # Append LINE to file ${config_append}
 AC_DEFUN([GIT_CONF_APPEND_LINE],
 [echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE
+#
+# GIT_ARG_SET_PATH(PROGRAM)
+# -------------------------
+# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
+AC_DEFUN([GIT_ARG_SET_PATH],
+[AC_ARG_WITH([$1],
+ [AS_HELP_STRING([--with-$1=PATH],
+                 [provide PATH to $1])],
+ [GIT_CONF_APPEND_PATH($1)],[])
+])# GIT_ARG_SET_PATH
+#
+# GIT_CONF_APPEND_PATH(PROGRAM)
+# ------------------------------
+# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
+# Used by GIT_ARG_SET_PATH(PROGRAM)
+AC_DEFUN([GIT_CONF_APPEND_PATH],
+[PROGRAM=m4_toupper($1); \
+if test "$withval" = "no"; then \
+	AC_MSG_ERROR([You cannot use git without $1]); \
+else \
+	if test "$withval" = "yes"; then \
+		AC_MSG_WARN([You should provide path for --with-$1=PATH]); \
+	else \
+		GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \
+	fi; \
+fi; \
+]) # GIT_CONF_APPEND_PATH
+#
+# GIT_PARSE_WITH(PACKAGE)
+# -----------------------
+# For use in AC_ARG_WITH action-if-found, for packages default ON.
+# * Set NO_PACKAGE=YesPlease for --without-PACKAGE
+# * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
+# * Unset NO_PACKAGE for --with-PACKAGE without ARG
+AC_DEFUN([GIT_PARSE_WITH],
+[PACKAGE=m4_toupper($1); \
+if test "$withval" = "no"; then \
+	m4_toupper(NO_$1)=YesPlease; \
+elif test "$withval" = "yes"; then \
+	m4_toupper(NO_$1)=; \
+else \
+	m4_toupper(NO_$1)=; \
+	GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval); \
+fi \
+])# GIT_PARSE_WITH
+
+
+## Site configuration related to programs (before tests)
+## --with-PACKAGE[=ARG] and --without-PACKAGE
+#
+# Define SHELL_PATH to provide path to shell.
+GIT_ARG_SET_PATH(shell)
+#
+# Define PERL_PATH to provide path to Perl.
+GIT_ARG_SET_PATH(perl)
+#
+# Define NO_PYTHON if you want to lose all benefits of the recursive merge.
+# Define PYTHON_PATH to provide path to Python.
+AC_ARG_WITH(python,[AS_HELP_STRING([--with-python=PATH], [provide PATH to python])
+AS_HELP_STRING([--without-python], [don't use python scripts])],
+ [if test "$withval" = "no"; then \
+    NO_PYTHON=YesPlease; \
+  elif test "$withval" = "yes"; then \
+    NO_PYTHON=; \
+  else \
+    NO_PYTHON=; \
+    PYTHON_PATH=$withval; \
+  fi; \
+ ])
+AC_SUBST(NO_PYTHON)
+AC_SUBST(PYTHON_PATH)
 
 
 ## Checks for programs.
@@ -30,6 +101,16 @@ AC_CHECK_TOOL(AR, ar, :)
 AC_CHECK_PROGS(TAR, [gtar tar])
 #
 # Define NO_PYTHON if you want to lose all benefits of the recursive merge.
+# Define PYTHON_PATH to provide path to Python.
+if test -z "$NO_PYTHON"; then
+	if test -z "$PYTHON_PATH"; then
+		AC_PATH_PROGS(PYTHON_PATH, [python python2.4 python2.3 python2])
+	fi
+	if test -n "$PYTHON_PATH"; then
+		GIT_CONF_APPEND_LINE([PYTHON_PATH=@PYTHON_PATH@])
+		NO_PYTHON=""
+	fi
+fi
 
 
 ## Checks for libraries.
@@ -37,32 +118,42 @@ AC_MSG_NOTICE([CHECKS for libraries])
 #
 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
-AC_CHECK_LIB([ssl], [SHA1_Init],[],
-[AC_CHECK_LIB([crypto], [SHA1_INIT],
- [GIT_CONF_APPEND_LINE(NEEDS_SSL_WITH_CRYPTO=YesPlease)],
- [GIT_CONF_APPEND_LINE(NO_OPENSSL=YesPlease)])])
+AC_CHECK_LIB([crypto], [SHA1_Init],
+[NEEDS_SSL_WITH_CRYPTO=],
+[AC_CHECK_LIB([ssl], [SHA1_Init],
+ [NEEDS_SSL_WITH_CRYPTO=YesPlease
+  NEEDS_SSL_WITH_CRYPTO=],
+ [NO_OPENSSL=YesPlease])])
+AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
+AC_SUBST(NO_OPENSSL)
 #
 # Define NO_CURL if you do not have curl installed.  git-http-pull and
 # git-http-push are not built, and you cannot use http:// and https://
 # transports.
-AC_CHECK_LIB([curl], [curl_global_init],[],
-[GIT_CONF_APPEND_LINE(NO_CURL=YesPlease)])
+AC_CHECK_LIB([curl], [curl_global_init],
+[NO_CURL=],
+[NO_CURL=YesPlease])
+AC_SUBST(NO_CURL)
 #
 # Define NO_EXPAT if you do not have expat installed.  git-http-push is
 # not built, and you cannot push using http:// and https:// transports.
-AC_CHECK_LIB([expat], [XML_ParserCreate],[],
-[GIT_CONF_APPEND_LINE(NO_EXPAT=YesPlease)])
+AC_CHECK_LIB([expat], [XML_ParserCreate],
+[NO_EXPAT=],
+[NO_EXPAT=YesPlease])
+AC_SUBST(NO_EXPAT)
 #
 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin).
-AC_CHECK_LIB([c], [iconv],[],
-[AC_CHECK_LIB([iconv],[iconv],
- [GIT_CONF_APPEND_LINE(NEEDS_LIBICONV=YesPlease)],[])])
+AC_CHECK_LIB([c], [iconv],
+[NEEDS_LIBICONV=],
+[NEEDS_LIBICONV=YesPlease])
+AC_SUBST(NEEDS_LIBICONV)
 #
 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
 # Patrick Mauritz).
-AC_CHECK_LIB([c], [socket],[],
-[AC_CHECK_LIB([socket],[socket],
- [GIT_CONF_APPEND_LINE(NEEDS_SOCKET=YesPlease)],[])])
+AC_CHECK_LIB([c], [socket],
+[NEEDS_SOCKET=],
+[NEEDS_SOCKET=YesPlease])
+AC_SUBST(NEEDS_SOCKET)
 
 
 ## Checks for header files.
@@ -72,21 +163,63 @@ AC_CHECK_LIB([c], [socket],[],
 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
 #
 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
-AC_CHECK_MEMBER(struct dirent.d_ino,[],
-[GIT_CONF_APPEND_LINE(NO_D_INO_IN_DIRENT=YesPlease)],
+AC_CHECK_MEMBER(struct dirent.d_ino,
+[NO_D_INO_IN_DIRENT=],
+[NO_D_INO_IN_DIRENT=YesPlease],
 [#include <dirent.h>])
+AC_SUBST(NO_D_INO_IN_DIRENT)
 #
 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
-AC_CHECK_MEMBER(struct dirent.d_type,[],
-[GIT_CONF_APPEND_LINE(NO_D_TYPE_IN_DIRENT=YesPlease)],
+AC_CHECK_MEMBER(struct dirent.d_type,
+[NO_D_TYPE_IN_DIRENT=],
+[NO_D_TYPE_IN_DIRENT=YesPlease],
 [#include <dirent.h>])
+AC_SUBST(NO_D_TYPE_IN_DIRENT)
 #
 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
 # sockaddr_storage.
-AC_CHECK_TYPE(struct sockaddr_storage,[],
-[GIT_CONF_APPEND_LINE(NO_SOCKADDR_STORAGE=YesPlease)],
+AC_CHECK_TYPE(struct sockaddr_storage,
+[NO_SOCKADDR_STORAGE=],
+[NO_SOCKADDR_STORAGE=YesPlease],
 [#include <netinet/in.h>])
+AC_SUBST(NO_SOCKADDR_STORAGE)
+#
+# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
+AC_CHECK_TYPE([struct addrinfo],[
+ AC_CHECK_FUNC([getaddrinfo],
+  [NO_IPV6=],
+  [NO_IPV6=YesPlease])
+],[NO_IPV6=YesPlease],[
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+])
+AC_SUBST(NO_IPV6)
+#
+# Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
+# do not support the 'size specifiers' introduced by C99, namely ll, hh,
+# j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
+# some C compilers supported these specifiers prior to C99 as an extension.
+AC_CACHE_CHECK(whether formatted IO functions support C99 size specifiers,
+ ac_cv_c_c99_format,
+[# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
+AC_RUN_IFELSE(
+	[AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
+		[[char buf[64];
+		if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
+		  exit(1);
+		else if (strcmp(buf, "12345"))
+		  exit(2);]])],
+	[ac_cv_c_c99_format=yes],
+	[ac_cv_c_c99_format=no])
+])
+if test $ac_cv_c_c99_format = no; then
+	NO_C99_FORMAT=YesPlease
+else
+	NO_C99_FORMAT=
+fi
+AC_SUBST(NO_C99_FORMAT)
 
 
 ## Checks for library functions.
@@ -94,21 +227,25 @@ AC_CHECK_TYPE(struct sockaddr_storage,[],
 AC_MSG_NOTICE([CHECKS for library functions])
 #
 # Define NO_STRCASESTR if you don't have strcasestr.
-AC_CHECK_FUNC(strcasestr,[],
-[GIT_CONF_APPEND_LINE(NO_STRCASESTR=YesPlease)])
+AC_CHECK_FUNC(strcasestr,
+[NO_STRCASESTR=],
+[NO_STRCASESTR=YesPlease])
+AC_SUBST(NO_STRCASESTR)
 #
 # Define NO_STRLCPY if you don't have strlcpy.
-AC_CHECK_FUNC(strlcpy,[],
-[GIT_CONF_APPEND_LINE(NO_STRLCPY=YesPlease)])
+AC_CHECK_FUNC(strlcpy,
+[NO_STRLCPY=],
+[NO_STRLCPY=YesPlease])
+AC_SUBST(NO_STRLCPY)
 #
 # Define NO_SETENV if you don't have setenv in the C library.
-AC_CHECK_FUNC(setenv,[],
-[GIT_CONF_APPEND_LINE(NO_SETENV=YesPlease)])
+AC_CHECK_FUNC(setenv,
+[NO_SETENV=],
+[NO_SETENV=YesPlease])
+AC_SUBST(NO_SETENV)
 #
 # Define NO_MMAP if you want to avoid mmap.
 #
-# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
-#
 # Define NO_ICONV if your libc does not properly support iconv.
 
 
@@ -125,9 +262,11 @@ AC_CHECK_FUNC(setenv,[],
 # a missing newline at the end of the file.
 
 
-## Site configuration
+## Site configuration (override autodetection)
 ## --with-PACKAGE[=ARG] and --without-PACKAGE
-# Define NO_SVN_TESTS if you want to skip time-consuming SVN interopability
+AC_MSG_NOTICE([CHECKS for site configuration])
+#
+# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
 # tests.  These tests take up a significant amount of the total test time
 # but are not needed unless you plan to talk to SVN repos.
 #
@@ -145,21 +284,51 @@ AC_CHECK_FUNC(setenv,[],
 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
 # This also implies MOZILLA_SHA1.
 #
+# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
+# /foo/bar/include and /foo/bar/lib directories.
+AC_ARG_WITH(openssl,
+AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
+AS_HELP_STRING([],              [ARG can be prefix for openssl library and headers]),\
+GIT_PARSE_WITH(openssl))
+#
 # Define NO_CURL if you do not have curl installed.  git-http-pull and
 # git-http-push are not built, and you cannot use http:// and https://
 # transports.
 #
 # Define CURLDIR=/foo/bar if your curl header and library files are in
 # /foo/bar/include and /foo/bar/lib directories.
+AC_ARG_WITH(curl,
+AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
+AS_HELP_STRING([],           [ARG can be also prefix for curl library and headers]),
+GIT_PARSE_WITH(curl))
 #
 # Define NO_EXPAT if you do not have expat installed.  git-http-push is
 # not built, and you cannot push using http:// and https:// transports.
 #
-# Define NO_MMAP if you want to avoid mmap.
+# Define EXPATDIR=/foo/bar if your expat header and library files are in
+# /foo/bar/include and /foo/bar/lib directories.
+AC_ARG_WITH(expat,
+AS_HELP_STRING([--with-expat],
+[support git-push using http:// and https:// transports via WebDAV (default is YES)])
+AS_HELP_STRING([],            [ARG can be also prefix for expat library and headers]),
+GIT_PARSE_WITH(expat))
+#
+# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
+# installed in /sw, but don't want GIT to link against any libraries
+# installed there.  If defined you may specify your own (or Fink's)
+# include directories and library directories by defining CFLAGS
+# and LDFLAGS appropriately.
 #
-# Define NO_PYTHON if you want to loose all benefits of the recursive merge.
+# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
+# have DarwinPorts installed in /opt/local, but don't want GIT to
+# link against any libraries installed there.  If defined you may
+# specify your own (or DarwinPort's) include directories and
+# library directories by defining CFLAGS and LDFLAGS appropriately.
 #
+# Define NO_MMAP if you want to avoid mmap.
+
 ## --enable-FEATURE[=ARG] and --disable-FEATURE
+#
 # Define COLLISION_CHECK below if you believe that SHA1's
 # 1461501637330902918203684832716283019655932542976 hashes do not give you
 # sufficient guarantee that no collisions between objects will ever happen.