Don't require C++ support at configure time.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/tools/make/trunk@32739 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,12 @@
+2011-03-22  Richard Frith-Macdonald <rfm@gnu.org>
+
+	* configure.ac:
+	* gnustep-config.in:
+	* TestFramework/gnustep-tests.in:
+	Change to only require ObjC++ support (for the test framework).
+	Assume C++ is supported even if it actually isn't, since we usually
+	don't care.
+
 2011-03-22  Richard Frith-Macdonald <rfm@gnu.org>
 
 	* configure.ac: work around the fact that AC_PROG_CXX is buggy and

TestFramework/gnustep-tests.in

@@ -119,17 +119,22 @@ export GSTESTLOG
 GSTESTSUM=$GSTESTDIR/tests.sum
 export GSTESTSUM
 
+# We assume that the C compiler supports ObjC
 if test x"$CC" = x
 then
   CC=`gnustep-config --variable=CC`
   export CC
 fi
 
-if test x"$CXX" = x
+# We only suport C++ and ObjC++ code if ObjC++ is available ... so having
+# a C++ compiler is not sufficient, it has to support ObjC++ too.
+if test x"$OBJCXX" = x
 then
-  CXX=`gnustep-config --variable=CXX`
-  export CXX
+  CXX=`gnustep-config --variable=OBJCXX`
+else
+  CXX=
 fi
+export CXX
 
 GSTESTFLAGS=
 if test "$GSTESTMODE" = "failfast"
@@ -293,7 +298,7 @@ build_and_run ()
     tmp=`basename $TESTFILE .m`
     if test x"$tmp" = x"$TESTFILE"
     then
-      BUILD_CMD="$CXX -o ./obj/$TESTNAME $TESTFILE $GSTESTFLAGS $GSTESTLIBS"
+      BUILD_CMD="$OBJCXX -o ./obj/$TESTNAME $TESTFILE $GSTESTFLAGS $GSTESTLIBS"
     else
       BUILD_CMD="$CC -o ./obj/$TESTNAME $TESTFILE $GSTESTFLAGS $GSTESTLIBS"
     fi
@@ -429,7 +434,7 @@ do
   if test x"$TESTS" = x
   then
     # Get the names of all subdirectories containing source files.
-    if test x"$CXX" = x
+    if test x"$OBJCXX" = x
     then
       # Only Objective-C (and C)
       SRCDIRS=`find $TESTDIR -name "*.m" | sed -e 's;/[^/]*$;;' | sort -u | sed -e 's/\(^\| \)X[^ ]*//g'`
@@ -498,7 +503,7 @@ do
       # Get the names of all the source files in the current directory.
       if test x"$TESTS" = x
       then
-        if test x"$CXX" = x
+        if test x"$OBJCXX" = x
         then
           # Only Objective-C (and C)
 	  TESTS=`find . \( -name . -o -prune \) -name "*.m" | sed -e 's;^.*/;;' | sort -u | sed -e 's/\(^\| \)X[^ ]*//g'`

configure.ac

@@ -37,6 +37,9 @@ AC_PROG_CPP
 # compile/link C++ code. :-)
 AC_PROG_CXX
 
+# Similarly for the ObjC++ compiler
+AC_PROG_OBJCXX
+
 AC_CANONICAL_TARGET([])
 
 
@@ -1246,11 +1249,11 @@ AC_SUBST(objc_threaded)
 AC_SUBST(ac_cv_objc_threaded)
 
 AC_MSG_CHECKING(whether Objective-C++ is supported)
-AC_LANG_PUSH(C++)
-CXXFLAGS_saved="$CXXFLAGS"
-CXXFLAGS="$CXXFLAGS -x objective-c++"
-CPPFLAGS_saved="$CPPFLAGS"
-CPPFLAGS="$CPPFLAGS -x objective-c++"
+AC_LANG_PUSH(Objective C++)
+OBJCXXFLAGS_saved="$OBJCXXFLAGS"
+OBJCXXFLAGS="$OBJCXXFLAGS -x objective-c++"
+OBJCXXPPFLAGS_saved="$OBJCXXPPFLAGS"
+OBJCXXPPFLAGS="$OBJCXXPPFLAGS -x objective-c++"
 AC_RUN_IFELSE([[
 
 @interface	ObjCClass
@@ -1272,12 +1275,12 @@ main()
 ]], objcc=yes, objcc=no)
 AC_MSG_RESULT($objcc)
 if test x"$objcc" = x"no"; then
-  CXX=
+  OBJCXX=
 fi
-AC_SUBST(CXX)
-CXXFLAGS="$CXXFLAGS_saved"
-CPPFLAGS="$CPPFLAGS_saved"
-AC_LANG_POP(C++)
+AC_SUBST(OBJCXX)
+OBJCXXFLAGS="$OBJCXXFLAGS_saved"
+OBJCXXPPFLAGS="$OBJCXXPPFLAGS_saved"
+AC_LANG_POP(Objective C++)
 
 #--------------------------------------------------------------------
 # Check if GCC supports -fobjc-nonfragile-abi, and if so, turn it on!

gnustep-config.in

@@ -62,6 +62,7 @@ if [ "$1" = "--help" ]; then
     echo
     echo "    --variable=CC"
     echo "    --variable=CXX"
+    echo "    --variable=OBJCXX"
     echo "    --variable=GNUMAKE"
     echo "    --variable=GNUSTEP_MAKEFILES"
     echo "    --variable=GNUSTEP_USER_DEFAULTS_DIR"
@@ -160,6 +161,8 @@ case "$1" in
               exit 0;;
   --variable=CXX) echo "@CXX@"
               exit 0;;
+  --variable=OBJCXX) echo "@OBJCXX@"
+              exit 0;;
   --variable=GNUSTEP_MAKEFILES) echo "$GNUSTEP_MAKEFILES"
               exit 0;;
   --variable=GNUMAKE) echo "@GNUMAKE@"