Revert "[portability] GiNaC::compile_ex works on OpenBSD now."

This reverts commit 375a7aa1f13fa6061c278eb2c2447fd91521b45d.

diff --git a/acinclude.m4 b/acinclude.m4
index 06ac032ad48b0563c91c798a67e756c8a936958a..78c3bdb7a86a62919ccde358bafc336f0b7af3e5 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -187,29 +187,16 @@ case $host_os in
 esac
 
 if test "$CONFIG_EXCOMPILER" = "yes"; then
-       AC_CHECK_HEADER([dlfcn.h], [CONFIG_EXCOMPILER="yes"], [CONFIG_EXCOMPILER="no"])
+       AC_CHECK_LIB(dl, dlopen, [
+               DL_LIBS="-ldl"
+               AC_DEFINE(HAVE_LIBDL, 1, [set to 1 if you have a working libdl installed.])],
+
+               [AC_MSG_WARN([libdl not found. GiNaC::compile_ex will be disabled.])
+                CONFIG_EXCOMPILER="no"])
 elif test "$CONFIG_EXCOMPILER" = "no"; then
-       AC_MSG_NOTICE([GiNaC::compile_ex disabled at user request.])
+       AC_MSG_RESULT([INFO: GiNaC::compile_ex disabled at user request.])
 else
-       AC_MSG_NOTICE([GiNaC::compile_ex is not supported on $host_os.])
-fi
-       
-if test "$CONFIG_EXCOMPILER" = "yes"; then
-       dnl Some systems (GNU/Linux, Solaris) have dlopen in -ldl, some
-       dnl others (OpenBSD) -- in libc
-       found_dlopen_lib="no"
-       DL_LIBS="-ldl"
-       AC_CHECK_LIB(dl, dlopen, [found_dlopen_lib="yes"])
-       if test "$found_dlopen_lib" = "no"; then
-               DL_LIBS=""
-               AC_CHECK_FUNC(dlopen, [found_dlopen_lib="yes"])
-       fi
-       if test "$found_dlopen_lib" = "no"; then
-               CONFIG_EXCOMPILER="no"
-               AC_MSG_WARN([Could not found working dlopen(). GiNaC::compile_ex will be disabled.])
-       else
-               AC_DEFINE(HAVE_LIBDL, 1, [set to 1 if dlopen() works.])
-       fi
+       AC_MSG_RESULT([INFO: GiNaC::compile_ex is not supported on $host_os.])
 fi
 AC_SUBST(DL_LIBS)
 AC_SUBST(CONFIG_EXCOMPILER)])