Add a tool to generate random declarations.

[cdecl99.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index dcb55043595271729efff47c697121f8d311ef3b..f0b606f1aebc244e5d21ec5d79570012fe30977c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -13,6 +13,7 @@ AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects])
 AM_SILENT_RULES([yes])
 
 AC_PROG_CC_C99
+AM_PROG_CC_C_O
 gl_EARLY
 
 LT_INIT
@@ -41,6 +42,25 @@ AC_SUBST([GLOBAL_SYMBOL_PIPE])
 
 AH_BOTTOM([#include <cfgtail.h>])
 
+AC_ARG_WITH([gsl],
+       [AS_HELP_STRING([--with-gsl],
+               [specify whether to build test programs requiring the GNU Scientific Library. [default=auto]]
+       )], [with_gsl=$withval], [with_gsl=auto])
+
+case $with_gsl in
+no)
+       have_gsl=no
+;;
+yes)
+       DX_CHECK_GSL([1.0], [have_gsl=yes])
+;;
+*)
+       DX_CHECK_GSL([1.0], [have_gsl=yes], [have_gsl=no])
+;;
+esac
+
+AM_CONDITIONAL([HAVE_GSL], [test x"$have_gsl" = x"yes"])
+
 AC_CONFIG_FILES([
        exported.sh
        Makefile