# VxWorks Munching Feature

# When compiling C++ sources on VxWorks in kernel mode, all .o files have to

# be processed by the so-called 'munch' script which will generate

# additional code for static c'tors and d'tors. The resulting .c file has to

# be compiled in turn and linked to the executable.

# This can only been done when linking applications, since the munch script

# generates a .c file containing static symbols: linking a lib that was

# already munched to a munched application would lead to duplicate symbols!

isEmpty(VXWORKS_MUNCH_EXT):VXWORKS_MUNCH_EXT = vxm

isEmpty(VXWORKS_MUNCH_TOOL):VXWORKS_MUNCH_TOOL = $(WIND_BASE)/host/resource/hutils/tcl/munch.tcl

!exists($$VXWORKS_MUNCH_TOOL) {

    error("Could not find VxWorks Munch tool: '$${VXWORKS_MUNCH_TOOL}'. Please set the environment variable WIND_BASE correctly.")

}

# The following scope is entered for any project that specifies 'shared' as well

# as for any project specifying neither 'shared', nor 'lib', nor 'staticlib'.

# This means that for a static build only the executable is munched, while for

# a shared build, every lib, plugin and executable is munched separately.

shared|!staticlib:!lib {

    *-dcc {

    VXWORKS_MUNCH_CMD = (targ=`basename $(TARGET)`; \

                         ddump -Ng \"$(TARGET)\" | tclsh $$VXWORKS_MUNCH_TOOL -c $$VXWORKS_ARCH_MUNCH >\"$(OBJECTS_DIR)/\$\${targ}_ctdt.c\" && \

                         $$QMAKE_CC -c $$QMAKE_CFLAGS \"$(OBJECTS_DIR)/\$\${targ}_ctdt.c\" -o \"$(OBJECTS_DIR)/\$\${targ}_ctdt.o\" && \

                         $$QMAKE_LINK $$QMAKE_LFLAGS -X -r5 -r4 \"$(OBJECTS_DIR)/\$\${targ}_ctdt.o\" \"$(TARGET)\" -o \"$(TARGET).munched\" && \

                         mv \"$(TARGET).munched\" \"$(TARGET)\" && \

                         chmod +x \"$(TARGET)\")

    }

    *-g++ {

    VXWORKS_MUNCH_CMD = (targ=`basename $(TARGET)`; \

                         nm \"$(DESTDIR)$(TARGET)\" | tclsh $$VXWORKS_MUNCH_TOOL -c $$VXWORKS_ARCH_MUNCH >\"$(OBJECTS_DIR)/\$\${targ}_ctdt.c\" && \

                         $$QMAKE_CC -c $$QMAKE_CFLAGS -fdollars-in-identifiers \"$(OBJECTS_DIR)/\$\${targ}_ctdt.c\" -o \"$(OBJECTS_DIR)/\$\${targ}_ctdt.o\" && \

                         $$QMAKE_LINK $$QMAKE_LFLAGS -nostdlib -Wl,-X -T $(WIND_BASE)/target/h/tool/gnu/ldscripts/link.OUT \"$(OBJECTS_DIR)/\$\${targ}_ctdt.o\" \"$(DESTDIR)$(TARGET)\" -o \"$(DESTDIR)$(TARGET).munched\" && \

                         mv \"$(DESTDIR)$(TARGET).munched\" \"$(DESTDIR)$(TARGET)\" && \

                         chmod +x \"$(DESTDIR)$(TARGET)\")

    }

    # We need to create a dummy lib.a in case someone links against this lib.

    # In VxWorks it's the responsibility of the run-time linker ld to resolve

    # symbols, since there are no real shared libraries for the toolchain linker

    # to link against.

    shared:contains(TEMPLATE, lib) {

        VXWORKS_MUNCH_CMD += "&&"

        VXWORKS_MUNCH_CMD += (atarg=`basename $(TARGET) .so.$${VERSION}`.a ; touch \"$(DESTDIR)\$\${atarg}\")

    }

    QMAKE_POST_LINK = $$VXWORKS_MUNCH_CMD $$QMAKE_POST_LINK

    silent:QMAKE_POST_LINK = @echo creating $@.$$VXWORKS_MUNCH_EXT && $$QMAKE_POST_LINK

    isEmpty(DESTDIR) {

        target.targets += "`basename $(TARGET)`.$$VXWORKS_MUNCH_EXT"

        QMAKE_DISTCLEAN += "`basename $(TARGET)`.$$VXWORKS_MUNCH_EXT"

    } else {

        target.targets += "$(DESTDIR)/`basename $(TARGET)`.$$VXWORKS_MUNCH_EXT"

        QMAKE_DISTCLEAN += "$(DESTDIR)/`basename $(TARGET)`.$$VXWORKS_MUNCH_EXT"

    }

    *-g++:LIBS += -lgcc

}