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- AC_DEFUN([AM_PATH_LIBZ],
- [
- AC_ARG_WITH([libz-prefix],
- [ --with-libz-prefix=PREFIX Prefix where zlib installed (optional)],
- [libz_prefix=$withval],
- [libz_prefix=""])
- if test "x$libz_prefix" = "x"; then
- libz_prefix="/usr"
- fi
- LIBS_save=$LIBS
- CPPFLAGS_save=$CPPFLAGS
- PKG_CONFIG_PATH_save=$PKG_CONFIG_PATH
- PKG_CONFIG_PATH="$libz_prefix/lib/pkgconfig:$PKG_CONFIG_PATH"
- PKG_CHECK_MODULES([ZLIB], [zlib >= 1.2.3], [have_zlib=yes], [have_zlib=no])
- if test "x$have_zlib" != "xyes"; then
- libz_prefix_lib=$libz_prefix/lib
- libz_prefix_include=$libz_prefix/include
- LIBS="-L$libz_prefix_lib $LIBS"
- CPPFLAGS="-I$libz_prefix_include $CPPFLAGS"
- AC_CHECK_LIB([z], [zlibVersion], [have_zlib=yes])
- if test "x$have_zlib" = "xyes"; then
- ZLIB_LIBS="-L$libz_prefix_lib -lz"
- ZLIB_CFLAGS="-I$libz_prefix_include"
- fi
- fi
- if test "x$have_zlib" = "xyes"; then
- AC_DEFINE([HAVE_ZLIB], [1], [Define to 1 if you have zlib.])
- fi
- LIBS=$LIBS_save
- CPPFLAGS=$CPPFLAGS_save
- PKG_CONFIG_PATH=$PKG_CONFIG_PATH_save
- ])
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