Can now cross-compile a working omc from Linux

Requires msys2 (installed using a pacman ported from arch Linux).
The compiled omc.exe is statically linked except for
libOpenModelicaCompiler.dll. The following configure flags were used:

'--host=i686-w64-mingw32'
'--with-omc=/usr/bin/omc'
'--without-omniORB'
'--with-lapack="-Wl,-Bstatic -lopenblas -lgfortran -lquadmath \
  -Wl,-Bdynamic -flto'
'--without-lpsolve'

CPPFLAGS:

* msys32/usr/include
* msys32/mingw32/include/tre
* msys32/mingw32/include'

LDFLAGS:
* msys32/usr/lib
* msys32/mingw32/lib

Compiler/boot/Makefile.in

@@ -18,7 +18,7 @@ GSLIB = -L$(TOP_DIR)/3rdParty/graphstream/gs-netstream/c++/ -lnetstream
 CPPFLAGS=-I"$(OMHOME)/include/omc/c" @CPPFLAGS@ -DADD_METARECORD_DEFINITIONS=
 CORBALIBS=@CORBALIBS@
 ULIMIT_CMD=true
-SHREXT=@SHREXT@
+SHREXT=@DLLEXT@
 OMC=@OMC@
 RPATH=@RPATH@
 STATIC=@BOOTSTRAP_STATIC@

Makefile.in

@@ -45,7 +45,7 @@ LAPACK_TARGET=@LAPACK_TARGET@
 OPENBLAS_EXTRA_ARGS=@OPENBLAS_EXTRA_ARGS@
 IPOPT_TARGET=ipopt
 UMFPACK_TARGET=@UMFPACK_TARGET@
-UMFPACK_SHARED=ON
+UMFPACK_SHARED=@UMFPACK_SHARED@
 # We don't want the shared version, but symbols are not exported if we use the static version
 # This compiles the shared and static versions, but we only copy the static version...
 FMILIB_SHARED = @FMILIB_SHARED@

Parser/Makefile.common

@@ -25,10 +25,13 @@ libomantlr3.a: $(ANTLR)/src/*.c $(ANTLR)/include/*.h $(ANTLR)/antlr3config.h
 	ar -ru $@ antlr3*.o
 	ranlib $@
 	rm -f antlr3*.o
+
+ifneq ($(SHREXT),.a)
 libomantlr3$(SHREXT): $(ANTLR)/src/*.c $(ANTLR)/include/*.h $(ANTLR)/antlr3config.h
 	# build the library
 	$(CC) -shared -o $@ ${LDFLAGS} ${CFLAGS} ${CPPFLAGS} -DANTLR3_NODEBUGGER $(ANTLR)/src/*.c -I$(ANTLR)/include -I$(ANTLR)
 	test ! `uname` = Darwin || install_name_tool -id "@rpath/$@" $@
+endif
 
 HFILES = \
   ModelicaParser.h \

configure.ac

@@ -612,10 +612,13 @@ FINAL_MESSAGES="$FINAL_MESSAGES\nParModelica: $OPENCL"
 
 AC_SUBST(CMAKE_LDFLAGS)
 AC_SUBST(CMAKE_EXTRA_DEFINES)
+AC_SUBST(DLLEXT)
+AC_SUBST(UMFPACK_SHARED)
 if test "$DARWIN" = "1"; then
   APP=".app"
   EXE=".app"
   SHREXT=".dylib"
+  DLLEXT=".dylib"
   LIBGC="$OMBUILDDIR/lib/$host_short/omc/libomcgc.a"
   LIBSIMULATION=libSimulationRuntimeC.dylib
   LIBRUNTIME=libOpenModelicaRuntimeC.dylib
@@ -642,11 +645,13 @@ if test "$DARWIN" = "1"; then
   OMC_LIBS="$(OMC_LIBS) -Wl,-undefined -Wl,dynamic_lookup"
   BOOTSTRAP_STATIC=""
   CMAKE_LDFLAGS="-Wl,-undefined -Wl,dynamic_lookup"
+  UMFPACK_SHARED=ON
 elif echo "$host" | grep -iq "mingw"; then
   APP=".exe"
   EXE=".exe"
   # Yes, we build static libs on Windows, so the "shared" extension is .a
-  SHREXT=".dll"
+  SHREXT=".a"
+  DLLEXT=".dll"
   LIBGC="$OMBUILDDIR/lib/$host_short/omc/libomcgc.a"
   LIBSIMULATION=libSimulationRuntimeC.a
   LIBRUNTIME=libOpenModelicaRuntimeC.a
@@ -657,7 +662,7 @@ elif echo "$host" | grep -iq "mingw"; then
   CMINPACKLIB_SHARED=OFF
   RT_LDFLAGS_SIM="$LDFLAGS $RT_LDFLAGS -lstdc++ -lomcgc -lexpat -lm"
   RT_LDFLAGS_SIM_OPTIONAL="$SUNDIALS_LDFLAGS $IPOPT_LDFLAGS $UMFPACK_LDFLAGS -llis -lcminpack"
-  RT_LDFLAGS="$LDFLAGS $RT_LDFLAGS -lomcgc -lexpat -lpthread -lm"
+  RT_LDFLAGS="$LDFLAGS $RT_LDFLAGS -lomcgc -lexpat -Wl,-Bstatic -lpthread -Wl,-Bdynamic -static-libgcc -lm"
   RT_LDFLAGS_OPTIONAL="$RT_LDFLAGS_OPTIONAL"
   RT_LDFLAGS_GENERATED_CODE="$LDFLAGS -lOpenModelicaRuntimeC $RT_LDFLAGS"
   RT_LDFLAGS_GENERATED_CODE_SIM="$LDFLAGS -lSimulationRuntimeC -lcdaskr $RT_LDFLAGS_SIM"
@@ -673,11 +678,13 @@ elif echo "$host" | grep -iq "mingw"; then
   AC_CHECK_TOOL(WINDRES, windres, [AC_MSG_ERROR([no])])
   CMAKE_EXTRA_DEFINES="-DCMAKE_SYSTEM_NAME=Windows -DCMAKE_RC_COMPILER=$WINDRES"
   CPPFLAGS="$CPPFLAGS -DMSYS2_AUTOCONF=1"
-  OMC_LIBS="$OMC_LIBS -lstdc++ -lwsock32 -ltre -liconv -lintl -lshlwapi"
+  OMC_LIBS="$OMC_LIBS -lwsock32 -Wl,-Bstatic -lstdc++ -ltre  -lintl -Wl,-Bdynamic -liconv -lshlwapi"
+  UMFPACK_SHARED=OFF
 else
   APP=""
   EXE=""
   SHREXT=".so"
+  DLLEXT=".so"
   LIBGC="$OMBUILDDIR/lib/$host_short/omc/libomcgc.so"
   LIBSIMULATION=libSimulationRuntimeC.so
   LIBRUNTIME=libOpenModelicaRuntimeC.so
@@ -702,6 +709,7 @@ else
   OS_TARGET="linux"
   AR_SH="$AR -ru"
   BOOTSTRAP_STATIC=""
+  UMFPACK_SHARED=ON
 fi
 
 AC_ARG_WITH(FMIL, [  --with-FMIL                 Link omc to FMIL (only disable when cross-compiling)],