From 8c35d797572d3ccef6d1ed6ebc59e679b5b80aa6 Mon Sep 17 00:00:00 2001
From: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Date: Sun, 6 Sep 2009 09:48:33 +0200
Subject: [PATCH] Add testsuite exposure for passing of compiler and linker
 flags.

* tests/flags.at (passing flags through libtool): New file, new
test, for bug fixed in previous commit.
* Makefile.am (TESTSUITE_AT): Add tests/flags.at.

Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
---
 ChangeLog      |  7 ++++
 Makefile.am    |  1 +
 tests/flags.at | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 104 insertions(+)
 create mode 100644 tests/flags.at

diff --git a/ChangeLog b/ChangeLog
index 9e5d353b0..599d33e06 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2009-09-06  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	Add testsuite exposure for passing of compiler and linker flags.
+	* tests/flags.at (passing flags through libtool): New file, new
+	test, for bug fixed in previous commit.
+	* Makefile.am (TESTSUITE_AT): Add tests/flags.at.
+
 2009-09-04  Peter Rosin  <peda@lysator.liu.se>
 
 	Make -Wc,FLAG behave like -Xcompiler FLAG in link mode.
diff --git a/Makefile.am b/Makefile.am
index a18955eb3..e22fcc24d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -455,6 +455,7 @@ TESTSUITE_AT	= tests/testsuite.at \
 		  tests/duplicate_members.at \
 		  tests/duplicate_conv.at \
 		  tests/duplicate_deps.at \
+		  tests/flags.at \
 		  tests/inherited_flags.at \
 		  tests/convenience.at \
 		  tests/link-order.at \
diff --git a/tests/flags.at b/tests/flags.at
new file mode 100644
index 000000000..3de1fcb88
--- /dev/null
+++ b/tests/flags.at
@@ -0,0 +1,96 @@
+# flags.at -- libtool passing of flags             -*- Autotest -*-
+#
+#   Copyright (C) 2009 Free Software Foundation, Inc.
+#
+#   This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING.  If not, a copy
+# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
+# or obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+####
+
+AT_SETUP([passing flags through libtool])
+AT_KEYWORDS([libtool])
+AT_KEYWORDS([CXX F77 FC])
+
+LDFLAGS="$LDFLAGS -no-undefined"
+eval "`$LIBTOOL --config | $EGREP '^(FGREP)='`"
+
+AT_DATA([a.c],
+[[int main () { return 0; }
+]])
+
+AT_DATA([a.f],
+[[      program main
+      end
+]])
+
+cp a.c a.cpp
+cp a.f a.f90
+
+# Linker flags are not passed to the archiver, so don't test static libraries.
+if $LIBTOOL --features | grep 'enable shared libraries'; then
+  library_and_module='library.la "module.la -module -avoid-version"'
+else
+  library_and_module=
+fi
+
+for tag in CC CXX F77 FC; do
+  if $LIBTOOL --tag=$tag 2>&1 | grep 'unknown tag'; then
+    continue
+  fi
+  case $tag in
+  CC) compile="$CC $CPPFLAGS $CFLAGS" link="$CC $CFLAGS $LDFLAGS" source=a.c ;;
+  CXX) compile="$CXX $CPPFLAGS $CXXFLAGS" link="$CXX $CXXFLAGS $LDFLAGS" source=a.cpp;;
+  F77) compile="$CC $CPPFLAGS $CFLAGS" link="$CC $CFLAGS $LDFLAGS" source=a.f ;;
+  FC) compile="$CC $CPPFLAGS $CFLAGS" link="$CC $CFLAGS $LDFLAGS" source=a.f90 ;;
+  esac
+
+  eval "`$LIBTOOL --tag=$tag --config | $EGREP '^(wl|archive_cmds|reload_cmds)='`"
+
+  AT_CHECK([$LIBTOOL --tag=$tag --mode=compile $compile -c $source],
+	   [], [ignore], [ignore])
+
+  # Linker flags are prefixed with ${wl} iff they are passed to the
+  # compiler driver, instead of directly to the linker.
+  case $archive_cmds in
+  *\$LD*\$linker_flags*) maybe_wl= ;;
+  *) maybe_wl=$wl ;;
+  esac
+
+  for flag in -Wc, -Wl, '-Xcompiler ' '-Xlinker '; do
+    case $flag in
+    -Wc, | -Xcompiler\ )
+      AT_CHECK([$LIBTOOL -n --tag=$tag --mode=compile $compile ]dnl
+	       [$flag-foo -c $source], [], [stdout], [ignore])
+      AT_CHECK([$FGREP " -foo" stdout], [], [ignore])
+      flag_prefix=
+      ;;
+    -Wl, | -Xlinker\ )
+      flag_prefix=$maybe_wl
+      ;;
+    esac
+
+    eval set program "$library_and_module"
+    for output
+    do
+      AT_CHECK([$LIBTOOL -n --tag=$tag --mode=link $link ]dnl
+	       [-o $output a.lo -rpath /nowhere $flag-foo], [], [stdout], [ignore])
+      AT_CHECK([$FGREP " $flag_prefix-foo" stdout], [], [ignore])
+    done
+  done
+done
+
+AT_CLEANUP
-- 
2.47.2