re PR ipa/63566 (i686 bootstrap fails: ICE RTL flag check: INSN_UID used with unexpec...
[official-gcc.git] / config / zlib.m4
blobb0174994ec16782d27a8aa65c47d5c0f2cfbf71a
1 dnl A function to check for zlib availability.  zlib is used by default
2 dnl unless the user configured with --disable-nls.
4 AC_DEFUN([AM_ZLIB],
6   # See if the user specified whether he wants zlib support or not.
7   AC_ARG_WITH(zlib,
8     [  --with-zlib             include zlib support (auto/yes/no) [default=auto]],
9     [], [with_zlib=auto])
11   if test "$with_zlib" != "no"; then
12     AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)])
13     if test "$with_zlib" = "yes" -a "$ac_cv_header_zlib_h" != "yes"; then
14       AC_MSG_ERROR([zlib (libz) library was explicitly requested but not found])
15     fi
16   fi