Add test for GNU regex in libc, which we'll use to decide whether to
compile our own copy of the library in package text.
-dnl $Id: aclocal.m4,v 1.50 2000/06/15 20:22:53 panne Exp $
+dnl $Id: aclocal.m4,v 1.51 2000/06/29 13:40:17 simonmar Exp $
dnl
dnl Extra autoconf macros for the Glasgow fptools
dnl
dnl
dnl Extra autoconf macros for the Glasgow fptools
dnl
+dnl *** Does libc contain GNU regex? ***
+dnl
+AC_DEFUN(FPTOOLS_REGEX_IN_LIBC,
+[AC_CACHE_CHECK([for GNU regex in libc], fptools_cv_have_regex,
+[AC_TRY_LINK([#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <regex.h>
+],[ struct re_pattern_buffer patbuf; re_compile_pattern("",0,&patbuf); ],
+fptools_cv_have_regex=yes, fptools_cv_have_regex=no)])
+if test "$fptools_cv_have_regex" = yes; then
+ HaveRegex=YES
+else
+ HaveRegex=NO
+fi
+AC_SUBST(HaveRegex)
+])
+
+
dnl ** check for leading underscores in symbol names
dnl
dnl Test for determining whether symbol names have a leading
dnl ** check for leading underscores in symbol names
dnl
dnl Test for determining whether symbol names have a leading
AC_SUBST(HaveLibGmp)
AC_SUBST(LibGmp)
AC_SUBST(HaveLibGmp)
AC_SUBST(LibGmp)
+dnl ** check whether this machine has GNU regex in libc.
+FPTOOLS_REGEX_IN_LIBC
+
dnl ** check whether this machine has BFD and liberty installed (used for debugging)
dnl the order of these tests matters: bfd needs liberty
AC_CHECK_LIB(iberty, xmalloc)
dnl ** check whether this machine has BFD and liberty installed (used for debugging)
dnl the order of these tests matters: bfd needs liberty
AC_CHECK_LIB(iberty, xmalloc)
LibGmp = @LibGmp@
#-----------------------------------------------------------------------------
LibGmp = @LibGmp@
#-----------------------------------------------------------------------------
+# Regex library
+# (if present in libc use that one, otherwise use the one in the tree)
+#
+HaveRegex = @HaveRegex@
+
+#-----------------------------------------------------------------------------