From: Gilles Gouaillardet <gilles@rist.or.jp>
Date: Thu, 24 Aug 2017 08:16:46 +0000 (+0900)
Subject: libtool: Add support for flang (Fortran LLVM-based) compilers
X-Git-Tag: v2.5.0~63
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=33d4b69fccbbb557c1160cc46c3d8d2f30fb8a2d;p=thirdparty%2Flibtool.git

libtool: Add support for flang (Fortran LLVM-based) compilers

This patch adds support for flang compilers.  Some specific flags
are needed so these compilers must be handled in a specific way.
By default, the compiler is called 'flang', but ARM releases their
own flang-based compiler called 'armflang'.

Because of the current lack of flang support in libtool, the
generated 'libtool' must be manually modified after 'configure' is
invoked.  Such a process is for example described on ARM web site
(it involves the Open MPI library).

Url: https://savannah.gnu.org/patch/?9442

* m4/libtool.m4: Handle *flang.
---

diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 32485604e..156efe957 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -4712,6 +4712,12 @@ m4_if([$1], [CXX], [
 	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
 	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
         ;;
+      *flang)
+        # Flang compiler.
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+        ;;
       # icc used to be incompatible with GCC.
       # ICC 10 doesn't accept -KPIC any more.
       icc* | ifort*)