| 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 "$ZLIB_DIR" = no; then |
| MOZ_NATIVE_ZLIB= |
| else |
| AC_CHECK_LIB(z, gzread, [MOZ_NATIVE_ZLIB=1 MOZ_ZLIB_LIBS="$MOZ_ZLIB_LIBS -lz"], |
| [MOZ_NATIVE_ZLIB=]) |
| if test "$MOZ_NATIVE_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_NATIVE_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_NATIVE_ZLIB) |
| |
| ]) |
