gcc/config/zlib.m4
H.J. Lu 96a58590dd This patch syncs zlib.m4 with binutils-gdb and uses AM_ZLIB from zlib.m4
in gcc/configure.ac.

config/

	* zlib.m4: Sync with binutils-gdb.

gcc/

	* Makefile.in (top_srcdir): New.
	* configure.ac: Use AM_ZLIB.
	* configure: Regeneated.

From-SVN: r225774
2015-07-14 07:25:35 -07:00

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dnl A function to check if the system's zlib library should be used. The
dnl builtin zlib dnl is used by default unless the user configured with
dnl --with-system-zlib.
AC_DEFUN([AM_ZLIB],
[
# Use the system's zlib library.
zlibdir="-L\$(top_builddir)/../zlib"
zlibinc="-I\$(top_srcdir)/../zlib"
AC_ARG_WITH(system-zlib,
[AS_HELP_STRING([--with-system-zlib], [use installed libz])],
if test x$with_system_zlib = xyes ; then
zlibdir=
zlibinc=
fi
)
AC_SUBST(zlibdir)
AC_SUBST(zlibinc)
])