-dnl YAZ Toolkit, Index Data 1994-2006
-dnl See the file LICENSE for details.
-dnl $Id: configure.ac,v 1.17 2006-05-24 12:33:21 adam Exp $
-AC_PREREQ(2.59)
-AC_INIT([yaz],[2.1.19],[adam@indexdata.dk])
+dnl This file is part of the YAZ toolkit.
+dnl Copyright (C) 1995-2008 Index Data
+AC_PREREQ(2.60)
+AC_INIT([yaz],[3.0.28],[yaz-help@indexdata.dk])
AC_CONFIG_SRCDIR(configure.ac)
AC_CONFIG_AUX_DIR([config])
-AM_INIT_AUTOMAKE([1.8])
+AM_INIT_AUTOMAKE([1.9])
dnl
AC_SUBST(READLINE_LIBS)
AC_SUBST(YAZ_CONF_CFLAGS)
AC_PROG_CPP
AC_CHECK_PROGS(YACC, 'bison -y')
test -z "$YACC" && AC_MSG_WARN([GNU bison not found])
-AC_CHECK_PROGS(TCLSH, tclsh8.5 tclsh8.4 tclsh8.3 tclsh8.2, tclsh)
+AC_CHECK_PROGS([TCLSH], [tclsh tclsh8.5 tclsh8.4 tclsh8.3 tclsh8.2], [tclsh])
AC_PROG_INSTALL
-AM_DISABLE_SHARED
AM_PROG_LIBTOOL
AC_PATH_PROG(pkgconfigpath, pkg-config, NONE)
dnl
dnl
dnl
dnl ------ Headers
-AC_CHECK_HEADERS(dirent.h fnmatch.h wchar.h locale.h langinfo.h pwd.h sys/select.h sys/socket.h sys/stat.h sys/time.h sys/types.h sys/un.h sys/wait.h unistd.h)
+AC_CHECK_HEADERS([dirent.h fnmatch.h wchar.h locale.h langinfo.h pwd.h unistd.h sys/select.h sys/socket.h sys/stat.h sys/time.h sys/times.h sys/types.h sys/un.h sys/wait.h netdb.h arpa/inet.h netinet/tcp.h netinet/in_systm.h])
+AC_CHECK_HEADERS([net/if.h netinet/in.h netinet/if_ether.h],[],[],[
+ #if HAVE_SYS_TYPES_H
+ #include <sys/types.h>
+ #endif
+ #if HAVE_SYS_SOCKET_H
+ #include <sys/socket.h>
+ #endif
+ #if HAVE_NET_IF_H
+ #include <net/if.h>
+ #endif
+ #if HAVE_NETINET_IN_H
+ #include <netinet/in.h>
+ #endif
+])
AC_HEADER_STDC
if test "$ac_cv_header_stdc" = "no"; then
- AC_MSG_WARN(Your system doesn't seem to support ANSI C)
+ AC_MSG_WARN([Your system doesn not seem to support ANSI C])
fi
dnl ----- Types
AC_CHECK_TYPES([long long])
checkBoth=0
AC_CHECK_FUNC(connect)
if test "$ac_cv_func_connect" = "no"; then
- AC_CHECK_LIB(socket, main, LIBS="$LIBS -lsocket", checkBoth=1)
+ AC_CHECK_LIB(socket, main, LIBS="$LIBS -lsocket", checkBoth=1)
fi
if test "$checkBoth" = "1"; then
- oldLibs=$LIBS
- LIBS="$LIBS -lsocket -lnsl"
- AC_CHECK_FUNC(accept, , [LIBS=$oldLibs])
+ oldLibs=$LIBS
+ LIBS="$LIBS -lsocket -lnsl"
+ AC_CHECK_FUNC(accept, , [LIBS=$oldLibs])
fi
AC_CHECK_FUNC(gethostbyname, ,[AC_CHECK_LIB(nsl, main, [LIBS="$LIBS -lnsl"])])
dnl
dnl ------ OpenSSL
AC_SUBST(SSL_CFLAGS)
-openssl=no
+openssl=default
AC_ARG_WITH(openssl, [ --with-openssl[=PREFIX] OpenSSL library in PREFIX], [openssl=$withval])
SSL_CFLAGS=""
SSL_LIBPATH=""
if test "$openssl" != "no"; then
- sslver=no
- if test "$openssl" != "yes"; then
- if test -x $openssl/bin/pkg-config; then
- if $openssl/bin/pkg-config --exists openssl; then
- SSL_CFLAGS=`$openssl/bin/pkg-config --cflags openssl`
- LIBS="$LIBS `$openssl/bin/pkg-config --libs openssl`"
- sslver=`$openssl/bin/pkg-config --modversion openssl`
- fi
- fi
- if test "$sslver" = "no"; then
- SSL_CFLAGS="-I$openssl/include -I$openssl/include/openssl"
- SSL_LIBPATH="-L$openssl/lib"
- fi
- else
- if test "$pkgconfigpath" != "NONE"; then
- if $pkgconfigpath --exists openssl; then
- SSL_CFLAGS=`$pkgconfigpath --cflags openssl`
- LIBS="$LIBS `$pkgconfigpath --libs openssl`"
- sslver=`$pkgconfigpath --modversion openssl`
- fi
- fi
- if test "$sslver" = "no"; then
- SSL_CFLAGS="-I/usr/include/openssl"
- fi
+ sslver=no
+ if test "$openssl" != "yes" -a "$openssl" != "default"; then
+ if test -x $openssl/bin/pkg-config; then
+ if $openssl/bin/pkg-config --exists openssl; then
+ SSL_CFLAGS=`$openssl/bin/pkg-config --cflags openssl`
+ LIBS="$LIBS `$openssl/bin/pkg-config --libs openssl`"
+ sslver=`$openssl/bin/pkg-config --modversion openssl`
+ fi
fi
if test "$sslver" = "no"; then
- xLIBS="$LIBS";
- xCPPFLAGS="$CPPFLAGS";
- CPPFLAGS="$CPPFLAGS $SSL_CFLAGS $SSL_LIBPATH"
- AC_CHECK_LIB(crypto, main)
- AC_CHECK_LIB(ssl, SSL_new)
- if test "$ac_cv_lib_ssl_SSL_new" = "yes"; then
- AC_CHECK_HEADER(openssl/ssl.h,[sslver=yes])
- LIBS="$SSL_LIBPATH $LIBS"
- fi
- if test "$sslver" != "yes"; then
- LIBS="$xLIBS"
- fi
- CPPFLAGS="$xCPPFLAGS"
+ SSL_CFLAGS="-I$openssl/include -I$openssl/include/openssl"
+ SSL_LIBPATH="-L$openssl/lib"
fi
- AC_MSG_CHECKING([for SSL])
- if test "$sslver" != "no"; then
- SSL_CFLAGS="-DHAVE_OPENSSL_SSL_H=1 $SSL_CFLAGS"
- AC_MSG_RESULT([$sslver])
- else
- SSL_CFLAGS=""
- AC_MSG_RESULT([None])
- AC_MSG_ERROR([OpenSSL development libraries missing])
+ else
+ if test "$pkgconfigpath" != "NONE"; then
+ if $pkgconfigpath --exists openssl; then
+ SSL_CFLAGS=`$pkgconfigpath --cflags openssl`
+ LIBS="$LIBS `$pkgconfigpath --libs openssl`"
+ sslver=`$pkgconfigpath --modversion openssl`
+ fi
+ fi
+ if test "$sslver" = "no"; then
+ SSL_CFLAGS="-I/usr/include/openssl"
fi
+ fi
+ if test "$sslver" = "no"; then
+ xLIBS="$LIBS";
+ xCPPFLAGS="$CPPFLAGS";
+ CPPFLAGS="$CPPFLAGS $SSL_CFLAGS $SSL_LIBPATH"
+ AC_CHECK_LIB(crypto, main)
+ AC_CHECK_LIB(ssl, SSL_new)
+ if test "$ac_cv_lib_ssl_SSL_new" = "yes"; then
+ AC_CHECK_HEADER(openssl/ssl.h,[sslver=yes])
+ LIBS="$SSL_LIBPATH $LIBS"
+ fi
+ if test "$sslver" != "yes"; then
+ LIBS="$xLIBS"
+ fi
+ CPPFLAGS="$xCPPFLAGS"
+ fi
+ AC_MSG_CHECKING([for SSL])
+ if test "$sslver" != "no"; then
+ SSL_CFLAGS="-DHAVE_OPENSSL_SSL_H=1 $SSL_CFLAGS"
+ AC_MSG_RESULT([$sslver])
+ else
+ SSL_CFLAGS=""
+ AC_MSG_RESULT([None])
+ if test "$openssl" != "default"; then
+ AC_MSG_ERROR([OpenSSL development libraries missing])
+ fi
+ fi
fi
dnl
dnl ------ GNU Readline
READLINE_SHARED_LIBADD=""
AC_CHECK_LIB(ncurses, tgetent, [READLINE_SHARED_LIBADD="-lncurses"],
- AC_CHECK_LIB(termcap, tgetent, [READLINE_SHARED_LIBADD="-ltermcap"])
+ AC_CHECK_LIB(termcap, tgetent, [READLINE_SHARED_LIBADD="-ltermcap"])
)
READLINE_LIBS=""
AC_CHECK_LIB(readline, readline, [READLINE_LIBS="$READLINE_LIBS -lreadline $READLINE_SHARED_LIBADD"],,$READLINE_SHARED_LIBADD)
AC_CHECK_LIB(history, add_history, [READLINE_LIBS="$READLINE_LIBS -lhistory"])
if test "$ac_cv_lib_readline_readline" = "yes"; then
- AC_CHECK_HEADERS(readline/readline.h readline/history.h)
- xLIBS=$LIBS
- LIBS="$LIBS $READLINE_LIBS"
- AC_TRY_LINK([
+ AC_CHECK_HEADERS(readline/readline.h readline/history.h)
+ xLIBS=$LIBS
+ LIBS="$LIBS $READLINE_LIBS"
+ AC_TRY_LINK([
#include <stdio.h>
#include <readline/readline.h>
- ],[
- rl_attempted_completion_over = 0;
- ],AC_DEFINE(HAVE_READLINE_COMPLETION_OVER))
- AC_TRY_LINK([
+ ],[
+ rl_attempted_completion_over = 0;
+ ],AC_DEFINE(HAVE_READLINE_COMPLETION_OVER))
+ AC_TRY_LINK([
#include <stdio.h>
#include <readline/readline.h>
- ],[
- rl_completion_matches (0, 0);
- ],[AC_DEFINE(HAVE_READLINE_RL_COMPLETION_MATCHES)])
- LIBS=$xLIBS
+ ],[
+ rl_completion_matches (0, 0);
+ ],[AC_DEFINE(HAVE_READLINE_RL_COMPLETION_MATCHES)])
+ LIBS=$xLIBS
fi
dnl ------ iconv
AC_ARG_WITH(iconv, [ --with-iconv[=PREFIX] iconv library in PREFIX])
if test "$with_iconv" != "no"; then
- AC_MSG_CHECKING(for iconv)
- oldLIBS="$LIBS"
- oldCPPFLAGS="${CPPFLAGS}"
- if test "$with_iconv" != "yes" -a "$with_iconv" != ""; then
- LIBS="$LIBS -L${with_iconv}/lib"
- CPPFLAGS="${CPPFLAGS} -I${with_iconv}/include"
- fi
- AC_TRY_LINK([
+ AC_MSG_CHECKING(for iconv)
+ oldLIBS="$LIBS"
+ oldCPPFLAGS="${CPPFLAGS}"
+ if test "$with_iconv" != "yes" -a "$with_iconv" != ""; then
+ LIBS="$LIBS -L${with_iconv}/lib"
+ CPPFLAGS="${CPPFLAGS} -I${with_iconv}/include"
+ fi
+ AC_TRY_LINK([
#include <iconv.h>
- ],[
- iconv_t t = iconv_open("", "");
- ],[
- AC_DEFINE(HAVE_ICONV_H)
- AC_MSG_RESULT(yes)
- ],[
- LIBS="$LIBS -liconv"
- AC_TRY_LINK([
+ ],[
+ iconv_t t = iconv_open("", "");
+ ],[
+ AC_DEFINE(HAVE_ICONV_H)
+ AC_MSG_RESULT(yes)
+ ],[
+ LIBS="$LIBS -liconv"
+ AC_TRY_LINK([
#include <iconv.h>
- ],[
- iconv_t t = iconv_open("", "");
- ],[
- AC_DEFINE(HAVE_ICONV_H)
- AC_MSG_RESULT(yes)
- ],[
- LIBS="$oldLIBS"
- CPPFLAGS="$oldCPPFLAGS"
- AC_MSG_RESULT(no)
- ])
- ])
+ ],[
+ iconv_t t = iconv_open("", "");
+ ],[
+ AC_DEFINE(HAVE_ICONV_H)
+ AC_MSG_RESULT(yes)
+ ],[
+ LIBS="$oldLIBS"
+ CPPFLAGS="$oldCPPFLAGS"
+ AC_MSG_RESULT(no)
+ ])
+ ])
fi
dnl ------ various functions
-AC_CHECK_FUNCS(vsnprintf gettimeofday poll strerror_r localtime_r usleep fopen64)
+AC_CHECK_FUNCS(getaddrinfo vsnprintf gettimeofday poll strerror_r localtime_r usleep fopen64)
case $host in
-*-*-darwin*)
+ *-*-darwin*)
trypoll="no";
- ;;
-*)
+ ;;
+ *)
trypoll="yes";
;;
esac
if test "$ac_cv_func_poll" = "yes" -a "$trypoll" = "yes"; then
- AC_CHECK_HEADERS(sys/poll.h)
+ AC_CHECK_HEADERS(sys/poll.h)
fi
dnl ------ socklen_t
dnl We check for socklen_t by making prototypes with the
dnl various types. First socklen_t, then size_t, finally int.
-dnl If the prototype succeeds, we're probably safe.
+dnl If the prototype succeeds, we are probably safe.
dnl That works if accept is not preprocessor defined (such sa AIX)
AC_MSG_CHECKING([for socklen_t])
AC_CACHE_VAL(ac_cv_check_socklen_t,[ac_cv_check_socklen_t=''
#ifdef __cplusplus
}
#endif
- ],,[ac_cv_check_socklen_t=size_t],[ac_cv_check_socklen_t=int])
+],,[ac_cv_check_socklen_t=size_t],[ac_cv_check_socklen_t=int])
+ ])
])
-])
AC_MSG_RESULT($ac_cv_check_socklen_t)
AC_DEFINE_UNQUOTED(YAZ_SOCKLEN_T,$ac_cv_check_socklen_t)
AC_DEFINE(YAZ_USE_NEW_LOG)
dnl ------ tcpd
AC_ARG_ENABLE(tcpd,[ --enable-tcpd[=PREFIX] enable TCP wrapper for server if available])
if test "$enable_tcpd" -a "$enable_tcpd" != "no"; then
- oldLibs=$LIBS
- oldCPPFLAGS=$CPPFLAGS
- if test "$enable_tcpd" != "yes"; then
- LIBS="$LIBS -L$enable_tcpd/lib"
- CPPFLAGS="$CPPFLAGS -I$enable_tcpd/include"
- fi
- AC_MSG_CHECKING(for working tcpd.h)
- LIBS="$LIBS -lwrap -lnsl"
- AC_TRY_LINK([#include <syslog.h>
+ oldLibs=$LIBS
+ oldCPPFLAGS=$CPPFLAGS
+ if test "$enable_tcpd" != "yes"; then
+ LIBS="$LIBS -L$enable_tcpd/lib"
+ CPPFLAGS="$CPPFLAGS -I$enable_tcpd/include"
+ fi
+ AC_MSG_CHECKING(for working tcpd.h)
+ LIBS="$LIBS -lwrap"
+ AC_TRY_LINK([#include <syslog.h>
#include <tcpd.h>
- int allow_severity = LOG_INFO;
- int deny_severity = LOG_WARNING;],
+ int allow_severity = LOG_INFO;
+ int deny_severity = LOG_WARNING;],
[struct request_info request_info; int i;
- i = hosts_access(&request_info);],
+ i = hosts_access(&request_info);],
tcpd_ok=1, tcpd_ok=0)
- if test "$tcpd_ok" = "0"; then
- AC_MSG_RESULT(no)
- AC_MSG_ERROR([tcpd development libraries missing])
+ if test "$tcpd_ok" = "0"; then
+ AC_MSG_RESULT(no)
+ AC_MSG_ERROR([tcpd development libraries missing])
LIBS=$oldLibs
CPPFLAGS=$oldCPPFLAGS
- else
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_TCPD_H)
- fi
+ else
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_TCPD_H)
+ fi
fi
dnl
-AC_SUBST(THREAD_CFLAGS)
-HAVETHREADS=0
-THREAD_CFLAGS=""
-LIBTHREAD=""
-dnl
+AC_SUBST(YAZ_CONFIG_CFLAGS)
dnl ------ GNU threads
+HAVETHREADS=0
AC_ARG_ENABLE(pth, [ --enable-pth enable GNU threads],[enable_pth=$enableval],[enable_pth=no])
AC_SUBST(LIBPTH)
if test "$enable_pth" = "yes"; then
- OLIBS=$LIBS
- AC_CHECK_LIB(pth,main)
- if test "$ac_cv_lib_pth_main" = "yes"; then
- AC_CHECK_HEADERS(pth.h)
- if test "$ac_cv_header_pth_h" = "yes"; then
- LIBTHREAD="-lpth"
- THREAD_CFLAGS="-DYAZ_GNU_THREADS=1"
- HAVETHREADS=1
- fi
- fi
- LIBS="$OLIBS $LIBTHREAD"
+ PTH_LIBS=""
+ OLIBS=$LIBS
+ AC_CHECK_LIB(pth,main)
+ if test "$ac_cv_lib_pth_main" = "yes"; then
+ AC_CHECK_HEADERS(pth.h)
+ if test "$ac_cv_header_pth_h" = "yes"; then
+ PTH_LIBS="-lpth"
+ CFLAGS="$CFLAGS -DYAZ_GNU_THREADS=1"
+ HAVETHREADS=1
+ fi
+ fi
+ LIBS="$OLIBS $PTH_LIBS"
fi
dnl
dnl ------ POSIX Threads
AC_ARG_ENABLE(threads, [ --disable-threads disable POSIX threads],[enable_threads=$enableval],[enable_threads=yes])
if test "$enable_threads" = "yes" -a "$HAVETHREADS" = "0"; then
- OLIBS=$LIBS
- OCC=$CC
- AC_CHECK_LIB(pthread,main)
- AC_MSG_CHECKING(for working POSIX Threads)
- AC_TRY_LINK([#include <pthread.h>
- void *func(void *p) { return 0; }
- ],[
- pthread_t pthread_id;
- pthread_create (&pthread_id, 0, func, 0);],
- thread_ok=yes,thread_ok=no)
- if test "$thread_ok" = "yes"; then
- AC_MSG_RESULT(yes)
- LIBTHREAD="-lpthread"
- THREAD_CFLAGS="-DYAZ_POSIX_THREADS=1 -D_REENTRANT"
- HAVETHREADS=1
- else
- CC="$CC -pthread"
- AC_TRY_LINK([#include <pthread.h>
- void *func(void *p) { return 0; }
- ],[
- pthread_t pthread_id;
- pthread_create (&pthread_id, 0, func, 0);],
- thread_ok=yes,thread_ok=no)
- if test "$thread_ok" = "yes"; then
- AC_MSG_RESULT([yes,BSD])
- THREAD_CFLAGS="-pthread -DYAZ_POSIX_THREADS=1 -D_REENTRANT"
- LIBTHREAD="-pthread"
- HAVETHREADS=1
- fi
- fi
- if test "$thread_ok" = "no"; then
- AC_MSG_RESULT(no)
- fi
- CC=$OCC
- LIBS="$OLIBS $LIBTHREAD"
+ ACX_PTHREAD([
+ OCFLAGS=$CFLAGS
+ CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+ dnl unfortunately empty thread lib spec is problematic because
+ dnl 'yaz-config --cflags' is not always passed to linker in
+ dnl applications using YAZ (such as Zebra).
+ if test "x$PTHREAD_LIBS" = "x"; then
+ OLIBS=$LIBS
+ for lib in -lpthread -lpthreads -lc_r; do
+ LIBS="$lib $OLIBS"
+ AC_TRY_LINK([ #include <pthread.h> ],
+ [ pthread_t id; pthread_join(id, 0); ],
+ [ PTHREAD_LIBS=$lib; break ]
+ )
+ done
+ LIBS=$OLIBS
+ fi
+ CFLAGS=$OCFLAGS
+ PTHREAD_CFLAGS="$PTHREAD_CFLAGS -DYAZ_POSIX_THREADS=1"
+ ])
fi
dnl ----- libXSLT/libEXLT/libXML2
AC_SUBST(XML2_CFLAGS)
-YAZ_LIBXML2
-YAZ_LIBXSLT
-YAZ_LIBEXSLT
+xml_enabled=false
+YAZ_LIBXML2(
+ [
+ AC_DEFINE(YAZ_HAVE_XML2)
+ YAZ_CONFIG_CFLAGS="$YAZ_CONFIG_CFLAGS -DYAZ_HAVE_XML2=1"
+ xml_enabled=true
+ ]
+)
+
+YAZ_LIBXSLT(
+ [
+ AC_DEFINE(YAZ_HAVE_XSLT)
+ YAZ_CONFIG_CFLAGS="$YAZ_CONFIG_CFLAGS -DYAZ_HAVE_XSLT=1"
+ ]
+)
+YAZ_LIBEXSLT(
+ [
+ AC_DEFINE(YAZ_HAVE_EXSLT)
+ YAZ_CONFIG_CFLAGS="$YAZ_CONFIG_CFLAGS -DYAZ_HAVE_EXSLT=1"
+ ]
+)
+
+YAZ_CONFIG_CFLAGS="$YAZ_CONFIG_CFLAGS $XML2_CFLAGS"
if test "$XML2_LIBS"; then
- LIBS="$XML2_LIBS $LIBS"
+ LIBS="$XML2_LIBS $LIBS"
fi
dnl
+dnl
+AC_CHECK_ICU([3.6],[
+ if test "$xml_enabled" = "true"; then
+ ICU_CPPFLAGS="$ICU_CPPFLAGS -D YAZ_HAVE_ICU=1"
+ else
+ ICU_CPPFLAGS=""
+ AC_MSG_WARN([ICU support disabled because XML support is unavailable])
+ fi
+])
+dnl
dnl ------ Memory debugging
AC_ARG_ENABLE(memdebug, [ --enable-memdebug enable memory debugging],[enable_memdebug=$enableval],[enable_memdebug=none])
if test "$enable_memdebug" = "yes"; then
- AC_DEFINE(TRACE_XMALLOC,2)
+ AC_DEFINE(TRACE_XMALLOC,2)
elif test "$enable_memdebug" = "no"; then
- AC_DEFINE(TRACE_XMALLOC,0)
+ AC_DEFINE(TRACE_XMALLOC,0)
fi
dnl
dnl ------ Using this for "in-source" yaz-config
AC_SUBST(YAZ_BUILD_ROOT)
YAZ_SRC_ROOT=`cd ${srcdir}; pwd`
YAZ_BUILD_ROOT=`pwd`
+
+dnl ------ windows version files
+WIN_FILEVERSION=`echo $PACKAGE_VERSION|tr . ,`.1
dnl
dnl ------ Makefiles
dnl
ztest/Makefile
zoom/Makefile
doc/Makefile
-doc/yaz.xml
+doc/local.ent
doc/common/Makefile
-doc/common/html.dsl
-doc/common/html.xsl
doc/common/print.dsl
-doc/common/tkl.xsl
-doc/common/man.xsl
etc/Makefile
yaz-config
+yaz.pc
Doxyfile
-],[sed s%yaz_echo_source=yes%yaz_echo_source=no%g < yaz-config > util/yaz-config && chmod +x yaz-config util/yaz-config])
-
-
-echo \ '
-Build and install binaries with the usual
- make
- make check
- make install
-
-Build distribution tarball with
- make dist
-
-Verify distribution tarball with
- make distcheck
+],[
+ sed s%yaz_echo_source=yes%yaz_echo_source=no%g < yaz-config > util/yaz-config && chmod +x yaz-config util/yaz-config
+ ]
+)
-Or just build the Debian packages without configuring
- dpkg-buildpackage -rfakeroot
-'
echo \
"------------------------------------------------------------------------
Ranlib: ${RANLIB}
------------------------------------------------------------------------"
+dnl Local Variables:
+dnl mode:shell-script
+dnl sh-indentation: 2
+dnl sh-basic-offset: 4
+dnl End:
projects / yaz-moved-to-github.git / blobdiff