1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/build/autoconf/zlib.m4 Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,54 @@
1.4 +dnl This Source Code Form is subject to the terms of the Mozilla Public
1.5 +dnl License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 +dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
1.7 +
1.8 +dnl Usage: MOZ_ZLIB_CHECK([version])
1.9 +
1.10 +AC_DEFUN([MOZ_ZLIB_CHECK],
1.11 +[
1.12 +
1.13 +MOZZLIB=$1
1.14 +
1.15 +MOZ_ARG_WITH_STRING(system-zlib,
1.16 +[ --with-system-zlib[=PFX]
1.17 + Use system libz [installed at prefix PFX]],
1.18 + ZLIB_DIR=$withval)
1.19 +
1.20 +if test -z "$MOZ_ZLIB_LIBS$MOZ_ZLIB_CFLAGS$SKIP_LIBRARY_CHECKS"; then
1.21 + _SAVE_CFLAGS=$CFLAGS
1.22 + _SAVE_LDFLAGS=$LDFLAGS
1.23 + _SAVE_LIBS=$LIBS
1.24 +
1.25 + if test -n "${ZLIB_DIR}" -a "${ZLIB_DIR}" != "yes"; then
1.26 + MOZ_ZLIB_CFLAGS="-I${ZLIB_DIR}/include"
1.27 + MOZ_ZLIB_LIBS="-L${ZLIB_DIR}/lib"
1.28 + CFLAGS="$MOZ_ZLIB_CFLAGS $CFLAGS"
1.29 + LDFLAGS="$MOZ_ZLIB_LIBS $LDFLAGS"
1.30 + fi
1.31 + if test -z "$ZLIB_DIR" -o "$ZLIB_DIR" = no; then
1.32 + MOZ_NATIVE_ZLIB=
1.33 + else
1.34 + AC_CHECK_LIB(z, gzread, [MOZ_NATIVE_ZLIB=1 MOZ_ZLIB_LIBS="$MOZ_ZLIB_LIBS -lz"],
1.35 + [MOZ_NATIVE_ZLIB=])
1.36 + if test "$MOZ_NATIVE_ZLIB" = 1; then
1.37 + MOZZLIBNUM=`echo $MOZZLIB | awk -F. changequote(<<, >>)'{printf "0x%x\n", (((<<$>>1 * 16 + <<$>>2) * 16) + <<$>>3) * 16 + <<$>>4}'changequote([, ])`
1.38 + AC_TRY_COMPILE([ #include <stdio.h>
1.39 + #include <string.h>
1.40 + #include <zlib.h> ],
1.41 + [ #if ZLIB_VERNUM < $MOZZLIBNUM
1.42 + #error "Insufficient zlib version ($MOZZLIBNUM required)."
1.43 + #endif ],
1.44 + MOZ_NATIVE_ZLIB=1,
1.45 + AC_MSG_ERROR([Insufficient zlib version for --with-system-zlib ($MOZZLIB required)]))
1.46 + fi
1.47 + fi
1.48 + CFLAGS=$_SAVE_CFLAGS
1.49 + LDFLAGS=$_SAVE_LDFLAGS
1.50 + LIBS=$_SAVE_LIBS
1.51 +fi
1.52 +
1.53 +AC_SUBST(MOZ_ZLIB_CFLAGS)
1.54 +AC_SUBST(MOZ_ZLIB_LIBS)
1.55 +AC_SUBST(MOZ_NATIVE_ZLIB)
1.56 +
1.57 +])
