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|
dnl Functions for zlib
dnl
dnl Version: 20130402
dnl Function to detect if zlib is available
AC_DEFUN([AX_ZLIB_CHECK_LIB],
[dnl Check if parameters were provided
AS_IF(
[test "x$ac_cv_with_zlib" != x && test "x$ac_cv_with_zlib" != xno && test "x$ac_cv_with_zlib" != xauto-detect],
[AS_IF(
[test -d "$ac_cv_with_zlib"],
[CFLAGS="$CFLAGS -I${ac_cv_with_zlib}/include"
LDFLAGS="$LDFLAGS -L${ac_cv_with_zlib}/lib"],
[AC_MSG_WARN([no such directory: $ac_cv_with_zlib])
])
])
AS_IF(
[test "x$ac_cv_with_zlib" = xno],
[ac_cv_zlib=no],
[dnl Check for a pkg-config file
AS_IF(
[test "x$cross_compiling" != "xyes" && test "x$PKGCONFIG" != "x"],
[PKG_CHECK_MODULES(
[zlib],
[zlib >= 1.2.5],
[ac_cv_zlib=zlib],
[ac_cv_zlib=no])
])
AS_IF(
[test "x$ac_cv_zlib" = xzlib],
[ac_cv_zlib_CPPFLAGS="$pkg_cv_zlib_CFLAGS"
ac_cv_zlib_LIBADD="$pkg_cv_zlib_LIBS"],
[dnl Check for headers
AC_CHECK_HEADERS([zlib.h])
AS_IF(
[test "x$ac_cv_header_zlib_h" = xno],
[ac_cv_zlib=no],
[dnl Check for the individual functions
ac_cv_zlib=zlib
AC_CHECK_LIB(
z,
compress2,
[],
[ac_cv_zlib=no])
AS_IF(
[test "x$ac_cv_lib_z_compress2" = xno],
[AC_MSG_FAILURE(
[Missing function: compress2 in library: zlib.],
[1])
])
AC_CHECK_LIB(
z,
uncompress,
[ac_zlib_dummy=yes],
[ac_cv_zlib=no])
AS_IF(
[test "x$ac_cv_lib_z_uncompress" = xno],
[AC_MSG_FAILURE(
[Missing function: uncompress in library: zlib.],
[1])
])
ac_cv_zlib_LIBADD="-lz";
])
])
])
AS_IF(
[test "x$ac_cv_zlib" = xzlib],
[AC_CHECK_LIB(
z,
compressBound,
[ac_zlib_dummy=yes])
AS_IF(
[test "x$ac_cv_lib_z_compressBound" = xyes],
[AC_DEFINE(
[HAVE_COMPRESS_BOUND],
[1],
[Define to 1 if compressBound funtion is available in zlib.])
])
AC_CHECK_LIB(
z,
adler32,
[ac_zlib_dummy=yes])
])
AS_IF(
[test "x$ac_cv_lib_z_adler32" = xyes],
[AS_IF(
[test "x$ac_cv_with_adler32" != xzlib && test "x$ac_cv_with_adler32" != xauto-detect],
[ac_cv_adler32=local],
[AC_DEFINE(
[HAVE_ADLER32],
[1],
[Define to 1 if adler32 funtion is available in zlib.])
ac_cv_adler32=zlib])],
[AS_IF(
[test "x$ac_cv_with_adler32" = xzlib],
[AC_MSG_FAILURE(
[Missing function: adler32 in library: zlib.],
[1])
])
ac_cv_adler32=local])
AS_IF(
[test "x$ac_cv_zlib" = xzlib],
[AC_DEFINE(
[HAVE_ZLIB],
[1],
[Define to 1 if you have the 'zlib' library (-lz).])
])
AS_IF(
[test "x$ac_cv_zlib" != xno],
[AC_SUBST(
[HAVE_ZLIB],
[1]) ],
[AC_SUBST(
[HAVE_ZLIB],
[0])
])
])
dnl Function to detect how to enable zlib
AC_DEFUN([AX_ZLIB_CHECK_ENABLE],
[AX_COMMON_ARG_WITH(
[zlib],
[zlib],
[search for zlib in includedir and libdir or in the specified DIR, or no if not to use zlib],
[auto-detect],
[DIR])
AX_COMMON_ARG_WITH(
[adler32],
[adler32],
[specify which alder32 implementation to use, options: 'auto-detect', 'zlib' or 'local'],
[auto-detect],
[auto-detect])
dnl Check for a shared library version
AX_ZLIB_CHECK_LIB
AS_IF(
[test "x$ac_cv_zlib_CPPFLAGS" != "x"],
[AC_SUBST(
[ZLIB_CPPFLAGS],
[$ac_cv_zlib_CPPFLAGS])
])
AS_IF(
[test "x$ac_cv_zlib_LIBADD" != "x"],
[AC_SUBST(
[ZLIB_LIBADD],
[$ac_cv_zlib_LIBADD])
])
AS_IF(
[test "x$ac_cv_zlib" = xzlib],
[AC_SUBST(
[ax_zlib_pc_libs_private],
[-lz])
])
AS_IF(
[test "x$ac_cv_zlib" = xzlib],
[AC_SUBST(
[ax_zlib_spec_requires],
[zlib])
AC_SUBST(
[ax_zlib_static_spec_requires],
[zlib-static])
AC_SUBST(
[ax_zlib_spec_build_requires],
[zlib-devel])
])
])
|
