[PATCH] Add test case for 69e77671 (cwrapper PATH manipulation order)

[libtool]

* tests/cwrapper.at: Add new test 'cwrapper and installed shared
libraries.'
---
This patch was actually proposed by Roumen Petrov here:
http://lists.gnu.org/archive/html/bug-libtool/2009-12/msg00037.html

He mentioned here:
http://lists.gnu.org/archive/html/libtool-patches/2010-09/msg00222.html
that 69e77671 would actually fix the error exposed by this test. I
ran this test both with and without 69e77671; without 69e77671 this
test fails (cygwin), but with it the new test passes.  Examination
shows that Roumen's test is exactly what is needed to verify that
the problem fixed by 69e77671 does not regress; his test explicitly
verifies that a newly built DLL (more generally, shared library)
is used at runtime in preference to an installed version.


 tests/cwrapper.at |   70 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 70 insertions(+), 0 deletions(-)

diff --git a/tests/cwrapper.at b/tests/cwrapper.at
index 248c0c0..ff3d04f 100644
--- a/tests/cwrapper.at
+++ b/tests/cwrapper.at
@@ -134,3 +134,73 @@ done
 
 AT_CLEANUP
 
+
+AT_SETUP([cwrapper and installed shared libraries])
+AT_KEYWORDS([libtool])
+
+# make sure existing libtool is configured for shared libraries
+AT_CHECK([$LIBTOOL --features | grep 'disable shared libraries' && exit 77],
+        [1], [ignore])
+
+# FIXME with shared_fails for this test on AIX
+# copy from link-order2.at:
+eval `$LIBTOOL --config | $EGREP '^(shlibpath_var|allow_undefined_flag)='`
+
+undefined_setting=-no-undefined
+shared_fails=no
+case $host_os,$LDFLAGS,$allow_undefined_flag in
+aix*,*-brtl*,*) ;;
+aix*) shared_fails=yes ;;
+darwin*,*,*-flat_namespace*) undefined_setting= ;;
+darwin*,*,*) shared_fails=yes ;;
+esac
+# end of copy from link-order2.at
+
+LDFLAGS="$LDFLAGS $undefined_setting"
+
+inst=`pwd`/inst
+libdir=$inst/lib
+bindir=$inst/bin
+mkdir $inst $libdir $bindir
+
+# we must build foo library in a separate directory to avoid on some
+# platforms shared library to be loaded from "current" directory
+
+mkdir foo
+cd foo
+# build and install "old" library version
+AT_DATA([a.c], [[
+int liba_ver (void) { return(1); }
+]])
+$LIBTOOL --mode=compile --tag=CC $CC $CPPFLAGS $CFLAGS -c a.c
+$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -version-info=0.0.0 -o liba.la 
-rpath $libdir a.lo
+$LIBTOOL --mode=install $lt_INSTALL liba.la $libdir
+
+# build a new library version
+AT_DATA([a.c], [[
+int liba_ver (void) { return(2); }
+]])
+$LIBTOOL --mode=compile --tag=CC $CC $CPPFLAGS $CFLAGS -c a.c
+$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -version-info=0.0.0 -o liba.la 
-rpath $libdir a.lo
+
+cd ..
+
+# build and run test application
+AT_DATA([m.c], [[
+extern int liba_ver (void);
+int main (void)
+{
+  int r = (liba_ver () == 2) ? 0 : 1;
+  return(r);
+}
+]])
+
+$LIBTOOL --mode=compile --tag=CC $CC $CPPFLAGS $CFLAGS -c m.c
+
+$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o m1$EXEEXT m.$OBJEXT foo/liba.la
+LT_AT_EXEC_CHECK([./m1], [0], [ignore], [ignore], [])
+
+$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o m2$EXEEXT m.$OBJEXT foo/liba.la 
-L$inst/lib
+LT_AT_EXEC_CHECK([./m2], [0], [ignore], [ignore], [])
+
+AT_CLEANUP
-- 
1.7.1