Compile modelica3d with gcc instead of clang

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@19767 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Author: sjoelund

Makefile.in

@@ -14,6 +14,7 @@ datadir = @datadir@
 datarootdir = @datarootdir@
 docdir = @docdir@
 CMAKE = CC=$(CC) CXX=$(CXX) cmake
+CMAKE_GCC = GCC_CC=$(CC) GCC_CXX=$(CXX) cmake
 CMAKE_TARGET = "Unix Makefiles"
 OPENCL = @OPENCL@
 AR = @AR@
@@ -27,6 +28,8 @@ APP=@APP@
 
 CC=@CC@
 CXX=@CXX@
+GCC_CC=@CC@
+GCC_CXX=@CXX@
 CFLAGS=@CFLAGS@
 MSGPACK_CFLAGS =
 CPPFLAGS=@CPPFLAGS@
@@ -126,7 +129,7 @@ ifeq (@MODELICA3D@,)
 	@echo Skipping Modelica3D
 else
 	cd 3rdParty/modelica3d && mkdir -p build
-	cd 3rdParty/modelica3d/build && $(CMAKE) -DCMAKE_COLOR_MAKEFILE:Bool=OFF -DOSG_BACKEND=1 -DUSE_OMC=0 ..
+	cd 3rdParty/modelica3d/build && $(CMAKE_GCC) -DCMAKE_COLOR_MAKEFILE:Bool=OFF -DOSG_BACKEND=1 -DUSE_OMC=0 ..
 	$(MAKE) -C 3rdParty/modelica3d/build
 	cp -p 3rdParty/modelica3d/build/backends/osg-gtk/libm3d-osg-gtk.so 3rdParty/modelica3d/build/lib/proc3d/libproc3d.so build/lib/
 	cp -p 3rdParty/modelica3d/lib/modcount/src/c/modcount.h 3rdParty/modelica3d/lib/modbus/src/c/modbus.h build/include/omc/

configure.in

@@ -84,6 +84,8 @@ AC_SUBST(APP)
 AC_SUBST(OMC)
 AC_SUBST(OMCTARGET)
 AC_SUBST(BOOTSTRAP_STATIC)
+AC_SUBST(GCC_CC)
+AC_SUBST(GCC_CXX)
 
 FINAL_MESSAGES="\nConfigured OpenModelica successfully using the following options:"
 
@@ -791,6 +793,14 @@ if test -n "$QMAKE"; then
   fi
 fi
 
+if test -f /usr/bin/gcc -a -f /usr/bin/g++; then
+  GCC_CC=gcc
+  GCC_CXX=g++
+else
+  GCC_CC=$CC
+  GCC_CXX=$CXX
+fi
+
 if test "Darwin" = `uname`; then
   APP=".app"
   EXE=".app"