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dnl--------------------------------------------------------------------------------
dnl
dnl This file is part of Code_Saturne, a general-purpose CFD tool.
dnl
dnl Copyright (C) 1998-2019 EDF S.A.
dnl
dnl This program is free software; you can redistribute it and/or modify it under
dnl the terms of the GNU General Public License as published by the Free Software
dnl Foundation; either version 2 of the License, or (at your option) any later
dnl version.
dnl
dnl This program is distributed in the hope that it will be useful, but WITHOUT
dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
dnl FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
dnl details.
dnl
dnl You should have received a copy of the GNU General Public License along with
dnl this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
dnl Street, Fifth Floor, Boston, MA 02110-1301, USA.
dnl
dnl--------------------------------------------------------------------------------
# CS_AC_TEST_ZLIB
#----------------
# Checks for Zlib support
# modifies or sets cs_have_zlib, ZLIB_CPPFLAGS, ZLIB_LDFLAGS, and ZLIB_LIBS
# depending on libraries found
AC_DEFUN([CS_AC_TEST_ZLIB],[
cs_have_zlib=no
AC_ARG_WITH(zlib,
[AS_HELP_STRING([--with-zlib=PATH],
[specify prefix directory for Zlib])],
[if test "x$withval" = "x"; then
with_zlib=yes
fi],
[with_zlib=check])
AC_ARG_WITH(zlib-include,
[AS_HELP_STRING([--with-zlib-include=PATH],
[specify directory for Zlib includes])],
[if test "x$with_zlib" = "xcheck"; then
with_zlib=yes
fi
ZLIB_CPPFLAGS="-I$with_zlib_include"],
[if test "x$with_zlib" != "xno" -a "x$with_zlib" != "xyes" \
-a "x$with_zlib" != "xcheck"; then
ZLIB_CPPFLAGS="-I$with_zlib/include"
fi])
AC_ARG_WITH(zlib-lib,
[AS_HELP_STRING([--with-zlib-lib=PATH],
[specify directory for Zlib library])],
[if test "x$with_zlib" = "xcheck"; then
with_zlib=yes
fi
ZLIB_LDFLAGS="-L$with_zlib_lib"],
[if test "x$with_zlib" != "xno" -a "x$with_zlib" != "xyes" \
-a "x$with_zlib" != "xcheck"; then
ZLIB_LDFLAGS="-L$with_zlib/lib"
fi])
if test "x$with_zlib" != "xno" ; then
saved_CPPFLAGS="$CPPFLAGS"
saved_LDFLAGS="$LDFLAGS"
saved_LIBS="$LIBS"
CPPFLAGS="${CPPFLAGS} ${ZLIB_CPPFLAGS}"
LDFLAGS="${LDFLAGS} ${ZLIB_LDFLAGS}"
LIBS="-lz ${LIBS}"
AC_MSG_CHECKING([for Zlib])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <zlib.h>]],
[[ gzFile *f; f = gzopen("filename", "r"); ]])],
[ AC_DEFINE([HAVE_ZLIB], 1, [gzipped file support])
cs_have_zlib=yes
],
[if test "x$with_zlib" != "xcheck" ; then
AC_MSG_FAILURE([gzipped file support is requested, but test for Zlib failed!])
else
AC_MSG_WARN([no gzipped file support])
fi
])
AC_MSG_RESULT($cs_have_zlib)
if test "x$cs_have_zlib" = "xno"; then
LIBS="$saved_LIBS"
fi
# Additional test if zlib found to check for type sizes
#------------------------------------------------------
if test "x$cs_have_zlib" = "xyes"; then
/bin/rm -f conftestval
AC_MSG_CHECKING([size of z_off_t])
AC_RUN_IFELSE([AC_LANG_SOURCE([
#include <stdio.h>
#include <stdlib.h>
#include <zlib.h>
int main(int argc, char** argv)
{
unsigned long i;
int z_size_uint, z_size_ulong, z_size_voidpf, z_size_off_t;
FILE *f = fopen("conftestval", "w");
i = zlibCompileFlags(); /* See zlib.h for documentation */
z_size_uint = ((i >> 0) & 3) * 4;
z_size_ulong = ((i >> 2) & 3) * 4;
z_size_voidpf = ((i >> 4) & 3) * 4;
z_size_off_t = ((i >> 6) & 3) * 4;
if ( z_size_uint != sizeof(unsigned int)
|| z_size_ulong != sizeof(unsigned long)
|| z_size_voidpf != sizeof(void *)) {
printf("\ncompile-time sizes for unsigned int, unsigned long, or void *\n"
"for zlib are %d, %d and %d,\n"
"while current values are %d, %d and %d.\n",
z_size_uint, z_size_ulong, z_size_voidpf,
sizeof(unsigned), sizeof(unsigned long), sizeof(void *));
fprintf(f, "0\n");
}
else {
fprintf(f, "%d\n", z_size_off_t);
}
fclose(f);
exit(0);
}])],
[
if test -f conftestval ; then
cs_ac_sizeof=`cat conftestval`
if test "$cs_ac_sizeof" = "0" ; then
AC_MSG_ERROR([zlib uint, ulong, or void sizes do not match current values.])
else
AC_MSG_RESULT([$cs_ac_sizeof])
AC_DEFINE_UNQUOTED([SIZEOF_Z_OFF_T], $cs_ac_sizeof,
[The size of z_off_t, as returned by zlibCompileFlags.])
fi
fi
],
[
AC_MSG_WARN([error running zlibCompileFlags configure test])
],
[
AC_MSG_WARN([unable to test for zlibCompileFlags when cross-compiling])
])
unset cs_ac_sizeof
/bin/rm -f conftest*]
fi # "x$cs_have_zlib" = "xyes"
fi)dnl
|
