1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
dnl This Source Code Form is subject to the terms of the Mozilla Public
dnl License, v. 2.0. If a copy of the MPL was not distributed with this
dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
dnl Usage: MOZ_ZLIB_CHECK([version])
AC_DEFUN([MOZ_ZLIB_CHECK],
[
MOZZLIB=$1
MOZ_ARG_WITH_STRING(system-zlib,
[ --with-system-zlib[=PFX]
Use system libz [installed at prefix PFX]],
ZLIB_DIR=$withval)
if test -z "$MOZ_ZLIB_LIBS$MOZ_ZLIB_CFLAGS$SKIP_LIBRARY_CHECKS"; then
_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
if test -n "${ZLIB_DIR}" -a "${ZLIB_DIR}" != "yes"; then
MOZ_ZLIB_CFLAGS="-I${ZLIB_DIR}/include"
MOZ_ZLIB_LIBS="-L${ZLIB_DIR}/lib"
CFLAGS="$MOZ_ZLIB_CFLAGS $CFLAGS"
LDFLAGS="$MOZ_ZLIB_LIBS $LDFLAGS"
fi
if test -z "$ZLIB_DIR" -o "$ZLIB_DIR" = no; then
MOZ_SYSTEM_ZLIB=
else
AC_CHECK_LIB(z, gzread, [MOZ_SYSTEM_ZLIB=1 MOZ_ZLIB_LIBS="$MOZ_ZLIB_LIBS -lz"],
[MOZ_SYSTEM_ZLIB=])
if test "$MOZ_SYSTEM_ZLIB" = 1; then
MOZZLIBNUM=`echo $MOZZLIB | awk -F. changequote(<<, >>)'{printf "0x%x\n", (((<<$>>1 * 16 + <<$>>2) * 16) + <<$>>3) * 16 + <<$>>4}'changequote([, ])`
AC_TRY_COMPILE([ #include <stdio.h>
#include <string.h>
#include <zlib.h> ],
[ #if ZLIB_VERNUM < $MOZZLIBNUM
#error "Insufficient zlib version ($MOZZLIBNUM required)."
#endif ],
MOZ_SYSTEM_ZLIB=1,
AC_MSG_ERROR([Insufficient zlib version for --with-system-zlib ($MOZZLIB required)]))
fi
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS
fi
AC_SUBST_LIST(MOZ_ZLIB_CFLAGS)
AC_SUBST_LIST(MOZ_ZLIB_LIBS)
AC_SUBST(MOZ_SYSTEM_ZLIB)
])
|
