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log4c.m4
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# Configure paths for LOG4C
# Owen Taylor 97-11-3
dnl AM_PATH_LOG4C([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for LOG4C, and define LOG4C_CFLAGS and LOG4C_LIBS
dnl
AC_DEFUN([AM_PATH_LOG4C],
[dnl
dnl Get the cflags and libraries from the log4c-config script
dnl
AC_ARG_WITH(log4c-prefix,[ --with-log4c-prefix=PFX Prefix where LOG4C is installed (optional)],
log4c_config_prefix="$withval", log4c_config_prefix="")
AC_ARG_WITH(log4c-exec-prefix,[ --with-log4c-exec-prefix=PFX Exec prefix where LOG4C is installed (optional)],
log4c_config_exec_prefix="$withval", log4c_config_exec_prefix="")
AC_ARG_ENABLE(log4ctest, [ --disable-log4ctest Do not try to compile and run a test LOG4C program],
, enable_log4ctest=yes)
if test x$log4c_config_exec_prefix != x ; then
log4c_config_args="$log4c_config_args --exec-prefix=$log4c_config_exec_prefix"
if test x${LOG4C_CONFIG+set} != xset ; then
LOG4C_CONFIG=$log4c_config_exec_prefix/bin/log4c-config
fi
fi
if test x$log4c_config_prefix != x ; then
log4c_config_args="$log4c_config_args --prefix=$log4c_config_prefix"
if test x${LOG4C_CONFIG+set} != xset ; then
LOG4C_CONFIG=$log4c_config_prefix/bin/log4c-config
fi
fi
AC_PATH_PROG(LOG4C_CONFIG, log4c-config, no)
min_log4c_version=ifelse([$1], ,0.99.7,$1)
AC_MSG_CHECKING(for LOG4C - version >= $min_log4c_version)
no_log4c=""
if test "$LOG4C_CONFIG" = "no" ; then
no_log4c=yes
else
LOG4C_CFLAGS=`$LOG4C_CONFIG $log4c_config_args --cflags`
LOG4C_LIBS=`$LOG4C_CONFIG $log4c_config_args --libs`
log4c_config_major_version=`$LOG4C_CONFIG $log4c_config_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
log4c_config_minor_version=`$LOG4C_CONFIG $log4c_config_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
log4c_config_micro_version=`$LOG4C_CONFIG $log4c_config_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
if test "x$enable_log4ctest" = "xyes" ; then
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $LOG4C_CFLAGS"
LIBS="$LOG4C_LIBS $LIBS"
dnl
dnl Now check if the installed LOG4C is sufficiently new. (Also sanity
dnl checks the results of log4c-config to some extent
dnl
rm -f conf.log4ctest
AC_TRY_RUN([
#include <log4c.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int
main ()
{
int major, minor, micro;
char *tmp_version;
system ("touch conf.log4ctest");
/* HP/UX 9 (%@#!) writes to sscanf strings */
tmp_version = strdup("$min_log4c_version");
if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
printf("%s, bad version string\n", "$min_log4c_version");
exit(1);
}
if ((log4c_major_version != $log4c_config_major_version) ||
(log4c_minor_version != $log4c_config_minor_version) ||
(log4c_micro_version != $log4c_config_micro_version))
{
printf("\n*** 'log4c-config --version' returned %d.%d.%d, but LOG4C (%d.%d.%d)\n",
$log4c_config_major_version, $log4c_config_minor_version, $log4c_config_micro_version,
log4c_major_version, log4c_minor_version, log4c_micro_version);
printf ("*** was found! If log4c-config was correct, then it is best\n");
printf ("*** to remove the old version of LOG4C. You may also be able to fix the error\n");
printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
printf("*** required on your system.\n");
printf("*** If log4c-config was wrong, set the environment variable LOG4C_CONFIG\n");
printf("*** to point to the correct copy of log4c-config, and remove the file config.cache\n");
printf("*** before re-running configure\n");
}
else if ((log4c_major_version != LOG4C_MAJOR_VERSION) ||
(log4c_minor_version != LOG4C_MINOR_VERSION) ||
(log4c_micro_version != LOG4C_MICRO_VERSION))
{
printf("*** LOG4C header files (version %d.%d.%d) do not match\n",
LOG4C_MAJOR_VERSION, LOG4C_MINOR_VERSION, LOG4C_MICRO_VERSION);
printf("*** library (version %d.%d.%d)\n",
log4c_major_version, log4c_minor_version, log4c_micro_version);
}
else
{
if ((log4c_major_version > major) ||
((log4c_major_version == major) && (log4c_minor_version > minor)) ||
((log4c_major_version == major) && (log4c_minor_version == minor) && (log4c_micro_version >= micro)))
{
return 0;
}
else
{
printf("\n*** An old version of LOG4C (%d.%d.%d) was found.\n",
log4c_major_version, log4c_minor_version, log4c_micro_version);
printf("*** You need a version of LOG4C newer than %d.%d.%d. The latest version of\n",
major, minor, micro);
printf("***\n");
printf("*** If you have already installed a sufficiently new version, this error\n");
printf("*** probably means that the wrong copy of the log4c-config shell script is\n");
printf("*** being found. The easiest way to fix this is to remove the old version\n");
printf("*** of LOG4C, but you can also set the LOG4C_CONFIG environment to point to the\n");
printf("*** correct copy of log4c-config. (In this case, you will have to\n");
printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
printf("*** so that the correct libraries are found at run-time))\n");
}
}
return 1;
}
],, no_log4c=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
if test "x$no_log4c" = x ; then
AC_MSG_RESULT(yes)
ifelse([$2], , :, [$2])
else
AC_MSG_RESULT(no)
if test "$LOG4C_CONFIG" = "no" ; then
echo "*** The log4c-config script installed by LOG4C could not be found"
echo "*** If LOG4C was installed in PREFIX, make sure PREFIX/bin is in"
echo "*** your path, or set the LOG4C_CONFIG environment variable to the"
echo "*** full path to log4c-config."
else
if test -f conf.log4ctest ; then
:
else
echo "*** Could not run LOG4C test program, checking why..."
CFLAGS="$CFLAGS $LOG4C_CFLAGS"
LIBS="$LIBS $LOG4C_LIBS"
AC_TRY_LINK([
#include <log4c.h>
#include <stdio.h>
], [ return ((log4c_major_version) || (log4c_minor_version) || (log4c_micro_version)); ],
[ echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding LOG4C or finding the wrong"
echo "*** version of LOG4C. If it is not finding LOG4C, you'll need to set your"
echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
echo "*** to the installed location Also, make sure you have run ldconfig if that"
echo "*** is required on your system"
echo "***"
echo "*** If you have an old version installed, it is best to remove it, although"
echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
echo "***" ],
[ echo "*** The test program failed to compile or link. See the file config.log for the"
echo "*** exact error that occured. This usually means LOG4C was incorrectly installed"
echo "*** or that you have moved LOG4C since it was installed. In the latter case, you"
echo "*** may want to edit the log4c-config script: $LOG4C_CONFIG" ])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
LOG4C_CFLAGS=""
LOG4C_LIBS=""
ifelse([$3], , :, [$3])
fi
AC_SUBST(LOG4C_CFLAGS)
AC_SUBST(LOG4C_LIBS)
rm -f conf.log4ctest
])