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##
## $Id$
##
## -------------------------------------------------------------------------
## NOTE: This file is rather immature and has to be considered to be
## almost experimental.
##
## Expect frequent changes -- It deserves to be cleaned up :(
## -------------------------------------------------------------------------
## The section below is based on make/compilers/gcc-target-default.cfg
## used in former versions of RTEMS.
##
## Set up the flags for the toolchains:
##
## We are considering 3 different building schemes here:
## * Using gcc's being able to accept -specs (aka gcc-2.8 building scheme)
## * Using gcc's not being able to accept -specs (aka gcc-2.7.2 building
## scheme)
## * Using third party toolchains (aka non-gcc building scheme)
##
## Automake conditionals in use:
## RTEMS_USE_GCC .. if we are using GCC
## NOTES:
## * The gcc-2.8 building scheme is the nominal building scheme and
## is actively supported.
## * The non-gcc building scheme requires manually setting up environment
## variables and is hardly tested at all
## CFLAGS_OPTIMIZE_V, CFLAGS_DEBUG_V are the values we
## would want the corresponding macros to be set to.
##
## CFLAGS_OPTIMIZE, CFLAGS_DEBUG are set by the
## 'VARIANT=<OPTIMIZE|DEBUG>' targets to their _V values.
## XCPPFLAGS, XCFLAGS, XCXXFLAGS, XASFLAGS
## are used to add flags from the shell
## cf. make.info ("Implicit rules/variables" for details)
if RTEMS_USE_GCC
## All the stuff below is specific to gcc
## gcc >= 2.8.x
GCCSPECS = $(GCC_SPECS) $(RTEMS_BSP_SPECS)
else
## fall back to the old style compilers/*.cfg
## CONFIG.CC is supposed to be provided by <BSP>.cfg
include $(CONFIG.CC)
endif # RTEMS_USE_GCC
DEFS = @DEFS@
CPPFLAGS = @CPPFLAGS@ $(CPU_DEFINES) $(DEFINES) $(XCPPFLAGS)
CFLAGS = @RTEMS_CFLAGS@ $(XCFLAGS)
## FIXME: This should be correct, but is not supported, yet
# CXXFLAGS = @RTEMS_CXXFLAGS@ $(XCXXFLAGS)
## Fall back to using RTEMS_CFLAGS for C++
CXXFLAGS = @RTEMS_CFLAGS@ $(XCXXFLAGS)
ASFLAGS = $(CPU_ASFLAGS) $(CPU_CFLAGS) $(XASFLAGS)
LINK_LIBS = $(LD_LIBS)
#
# Client compiler and support tools
#
#
# How to compile stuff into ${ARCH} subdirectory
#
COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
CCLD = $(CC)
LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
$(AM_LDFLAGS) $(LDFLAGS) -o $@
CXXCOMPILE = $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)
CXXLD = $(CXX)
CXXLINK = $(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) \
$(AM_LDFLAGS) $(LDFLAGS) -o $@
CCAS = $(CC)
CCASCOMPILE = $(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)
# OBSOLETE: Don't use
AS = $(CC)
ASCOMPILE = $(AS) $(AM_ASFLAGS) $(ASFLAGS)
${ARCH}/%.o: %.c
${COMPILE} -o $@ -c $<
${ARCH}/%.o: %.cc
${CXXCOMPILE} -o $@ -c $<
${ARCH}/%.o: %.S
${CCASCOMPILE} -DASM -o $@ -c $<
# Dependency files for use by gmake
# NOTE: we don't put them into $(ARCH)
# so that 'make clean' doesn't blow it away
DEPEND=Depends-${ARCH}
# We deliberately don't have anything depend on the
# $(DEPEND) file; otherwise it will get rebuilt even
# on 'make clean'
#
if RTEMS_USE_GCC
## HACK: Specific to gcc
## FIXME: The approach below is known to be conceptionally broken.
depend-gcc: $(C_FILES) $(CC_FILES) $(S_FILES)
## Use gcc -M to generate dependencies
## Replace foo.o with $(ARCH)/foo.o
## Replace $(ARCH) value with string $(ARCH)
## so that it will for debug cases
$(COMPILE) -M $^ | \
sed -e 's?^\(.*\)\.o[ ]*:?$$(ARCH)/\1.o:?' \
-e 's?$(ARCH)/?$$(ARCH)/?' >$(DEPEND).tmp
mv $(DEPEND).tmp $(DEPEND)
# pull in dependencies if they exist
ifeq (${DEPEND},$(wildcard ${DEPEND}))
include ${DEPEND}
@ENDIF@
endif
depend: depend-am
# spell out all the LINK_FILE's, rather than using -lbsp, so
# that $(LINK_FILES) can be a dependency
LINK_OBJS = \
$(OBJS) \
$(MANAGERS_NOT_WANTED:%=$(PROJECT_RELEASE)/lib/no-%$(LIB_VARIANT).rel)
LINK_FILES =\
$(START_FILE) \
$(OBJS) \
$(MANAGERS_NOT_WANTED:%=$(PROJECT_RELEASE)/lib/no-%$(LIB_VARIANT).rel)
if RTEMS_USE_GCC
## gcc >= 2.8
define make-rel
$(LINK) -qnolinkcmds -nostdlib -Wl,-r $(XLDFLAGS) $^
endef
else
## non-gcc
define make-rel
$(LINK) $(XLDFLAGS) $^
endef
endif
## -------------------------------------------------------------------------
## translate VARIANT into VARIANT_V
VARIANT = OPTIMIZE
VARIANT_OPTIMIZE_V = OPTIMIZE
VARIANT_DEBUG_V = DEBUG
VARIANT_optimize_V = OPTIMIZE
VARIANT_debug_V = DEBUG
VARIANT_V = $(VARIANT_$(VARIANT)_V)
## Setup the variant build subdirectory
ARCH_OPTIMIZE_V = o-optimize
ARCH_DEBUG_V = o-debug
ARCH__V = $(ARCH_OPTIMIZE_V)
ARCH = $(ARCH_$(VARIANT_V)_V)
## Setup the library suffix
LIBSUFFIX_OPTIMIZE_V =
LIBSUFFIX_DEBUG_V = _g
LIBSUFFIX__V = $(LIBSUFFIX_OPTIMIZE_V)
LIB_VARIANT = $(LIBSUFFIX_$(VARIANT_V)_V)
## These are supposed to be set in make/custom/<bsp>.cfg
CPU_CFLAGS = @CPU_CFLAGS@
CFLAGS_OPTIMIZE_V = @CFLAGS_OPTIMIZE_V@
CFLAGS_DEBUG_V = @CFLAGS_DEBUG_V@
CFLAGS__V = $(CFLAGS_OPTIMIZE_V)
## ------------------------------------------------------------------------
## Setup hard-coded flags
if RTEMS_USE_GCC
## gcc >= gcc-2.8
RTEMS_CFLAGS_OPTIMIZE_V =
RTEMS_CFLAGS_DEBUG_V = -qrtems_debug -Wno-unused
## non-gcc
## We can't guess what flags might be required here.
## Pass the values from the environment if you want to apply them.
endif
RTEMS_CFLAGS__V = $(RTEMS_CFLAGS_OPTIMIZE_V)
## -------------------------------------------------------------------------
CC = @CC@ $(GCCSPECS)
CXX = @CXX@ $(GCCSPECS)
CPP = @CPP@ $(GCCSPECS)
LD = @LD@
OBJCOPY = @OBJCOPY@
NM = @NM@
SIZE = @SIZE@
STRIP = @STRIP@
##
AM_CPPFLAGS = $(RTEMS_CPPFLAGS)
AM_CFLAGS =
AM_CXXFLAGS =
AM_CCASFLAGS = $(CPU_CFLAGS) $(RTEMS_CPPFLAGS) $(RTEMS_CCASFLAGS)
${ARCH}:
mkdir ${ARCH}
clean-local:
$(RM) -r o-optimize o-debug $(CLEANDIRS)
$(RM) Depends-o-optimize.tmp Depends-o-debug.tmp
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