[project @ 2002-03-26 16:36:09 by stolz]

[ghc-hetmet.git] / configure.in

diff --git a/configure.in b/configure.in
index ada52b6..53c0cd6 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -958,6 +958,8 @@ dnl ################################################################
 dnl Check for libraries
 dnl ################################################################
 
+dnl ** check for libdl & RTLD_NEXT
+
 AC_CHECK_LIB(dl, dlopen, 
        [HaveLibDL=YES
         AC_DEFINE(HAVE_LIBDL)
@@ -966,6 +968,24 @@ AC_CHECK_LIB(dl, dlopen,
 AC_CHECK_FUNCS(dlopen)
 AC_SUBST(HaveLibDL)
 
+dnl ** sometimes RTLD_NEXT is hidden in #ifdefs we really don't wan to set
+AC_MSG_CHECKING(for RTLD_NEXT from dlfcn.h)
+AC_EGREP_CPP(yes,
+[
+ #include <dlfcn.h>
+ #ifdef RTLD_NEXT
+        yes
+ #endif
+], [
+  AC_MSG_RESULT(yes)
+  AC_DEFINE(HAVE_RTLDNEXT)
+  HaveRtldNext=YES
+], [
+  AC_MSG_RESULT(no)
+  HaveRtldNext=NO
+  ])    
+AC_SUBST(HaveRtldNext)
+
 FPTOOLS_CHECK_LIB_NOWARN(m, atan)
 
 dnl --------------------------------------------------