PWD = $(shell pwd)

NOUX_PKG_DIR = $(call select_from_ports,gcc)/src/noux-pkg/gcc

NOUX_CONFIGURE_ARGS = --program-prefix=$(PROGRAM_PREFIX) \
                      --target=$(GCC_TARGET) \
                      --enable-languages=c,c++ \
                      --disable-libgo \
                      --disable-libssp \
                      --disable-libquadmath \
                      --disable-libffi \
                      --enable-targets=all \
                      --with-gnu-as \
                      --with-gnu-ld \
                      --disable-tls \
                      --disable-threads \
                      --disable-hosted-libstdcxx \
                      --enable-shared \
                      --enable-multiarch \
                      --disable-sjlj-exceptions

NOUX_ENV += host_configargs="$(HOST_CONFIG_ARGS)" \
            target_configargs="$(TARGET_CONFIG_ARGS)"

NOUX_ENV += CC_FOR_TARGET=$(CC) CXX_FOR_TARGET=$(CXX) GCC_FOR_TARGET=$(CC) CPP_FOR_TARGET="$(CC) -E" \
            LD_FOR_TARGET=$(LD) AS_FOR_TARGET=$(AS) AR_FOR_TARGET=$(AR)

# libgcc does not evaluate CPPFLAGS_FOR_TARGET, so everything is put into CFLAGS_FOR_TARGET here
NOUX_ENV += CFLAGS_FOR_TARGET='-I$(BASE_DIR)/../../tool -DUSE_PT_GNU_EH_FRAME -Dinhibit_libc -fPIC'

# libsupc++
NOUX_ENV += CXXFLAGS_FOR_TARGET='-fPIC'

NOUX_MAKE_ENV += MULTILIB_OPTIONS="m64/m32" MULTILIB_DIRNAMES="64 32"

#
# We link libraries to the final binaries using the 'LIBS' variable.  But
# unfortunately, the gcc build system has hardcoded some libs such as '-lc'.
# To satisfy the linker, we provide dummy archives.
#

LIBS = gmp mpfr mpc

NOUX_LDFLAGS += -L$(PWD)

.SECONDARY: dummy_libs
dummy_libs: libgmp.a libmpfr.a libmpc.a libc.a

libgmp.a libmpfr.a libmpc.a libc.a:
	$(VERBOSE)$(AR) -rc $@

Makefile: dummy_libs

LIBS  += libc libm libc_noux

include $(REP_DIR)/mk/noux.mk

#
# We have to specify 'LINK_ITEMS' twice to resolve inter-library dependencies.
# Unfortunately, the use of '--start-group' and '--end-group' does not suffice
# in all cases because 'libtool' strips those arguments from the 'LIBS' variable.
#
NOUX_LIBS += -Wl,--start-group $(sort $(LINK_ITEMS)) $(sort $(LINK_ITEMS)) $(LIBGCC) -Wl,--end-group