From: Peter Rosin <peda@lysator.liu.se>
Date: Fri, 17 Sep 2010 14:15:04 +0000 (+0200)
Subject: Copy over DLL_EXPORT handling from C to C++ for non-GCC on w32.
X-Git-Tag: v2.4~21
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a93b8481087b3eb9675ea9e6ca15b09e7e6901ae;p=thirdparty%2Flibtool.git

Copy over DLL_EXPORT handling from C to C++ for non-GCC on w32.

* libltdl/m4/libtool.m4 (_LT_COMPILER_PIC) [mingw, cygwin, os2]
[pw32, cegcc]: Copy over the DLL_EXPORT handling from C to C++.

Signed-off-by: Peter Rosin <peda@lysator.liu.se>
---

diff --git a/ChangeLog b/ChangeLog
index 326b65840..514a20e72 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-09-17  Peter Rosin  <peda@lysator.liu.se>
+
+	Copy over DLL_EXPORT handling from C to C++ for non-GCC on w32.
+	* libltdl/m4/libtool.m4 (_LT_COMPILER_PIC) [mingw, cygwin, os2]
+	[pw32, cegcc]: Copy over the DLL_EXPORT handling from C to C++.
+
 2010-09-17  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	LTO: consistently accept -fwhopr* and -flto* for GCC.
diff --git a/libltdl/m4/libtool.m4 b/libltdl/m4/libtool.m4
index 1a5b85dda..a8b07bfdd 100644
--- a/libltdl/m4/libtool.m4
+++ b/libltdl/m4/libtool.m4
@@ -3873,6 +3873,12 @@ m4_if([$1], [CXX], [
 	  ;;
 	esac
 	;;
+      mingw* | cygwin* | os2* | pw32* | cegcc*)
+	# This hack is so that the source file can tell whether it is being
+	# built for inclusion in a dll (and should export symbols for example).
+	m4_if([$1], [GCJ], [],
+	  [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+	;;
       dgux*)
 	case $cc_basename in
 	  ec++*)