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-rw-r--r--configure.in10
1 files changed, 9 insertions, 1 deletions
diff --git a/configure.in b/configure.in
index e0f8f6444f..43962e026c 100644
--- a/configure.in
+++ b/configure.in
@@ -2344,6 +2344,13 @@ AC_SUBST(INSTALLDOC)
if test "$rb_with_pthread" = "yes"; then
THREAD_MODEL=pthread
fi
+AC_CACHE_CHECK([for prefixed underscore of exported symbols], rb_cv_export_prefix, [
+ AC_TRY_COMPILE([extern void conftest_exported(void) {}], [], [
+ rb_cv_export_prefix=`$NM conftest.$ac_objext |
+ sed -n ['s/.*\(_\)conftest_exported.*/\1/p']`
+ ],
+ [rb_cv_export_prefix=''])
+])
MINIDLNOBJ=dmydln.o
AS_CASE(["$target_os"],
[linux*], [
@@ -2409,7 +2416,8 @@ AS_CASE(["$target_os"],
LIBRUBY_SO='$(RUBY_SO_NAME)'.dll
LIBRUBY_DLDFLAGS="${LIBRUBY_DLDFLAGS}"' $(RUBYDEF)'
fi
- EXPORT_PREFIX=' '
+ test -z "$rb_cv_export_prefix" && rb_cv_export_prefix=' '
+ EXPORT_PREFIX="$rb_cv_export_prefix"
DLDFLAGS="${DLDFLAGS}"' $(DEFFILE)'
AC_LIBOBJ([win32])
COMMON_LIBS=m