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authorRalf Corsepius <ralf.corsepius@rtems.org>2002-06-15 05:29:18 +0000
committerRalf Corsepius <ralf.corsepius@rtems.org>2002-06-15 05:29:18 +0000
commit9ea3832c6cec1db5fc6c72862e2c9fad5e738431 (patch)
treeb0296c93ed4703b311f08c9474fd3d0fd4351eb6 /cpukit/automake/compile.am
parent2002-06-14 Joel Sherrill <joel@OARcorp.com> (diff)
downloadrtems-9ea3832c6cec1db5fc6c72862e2c9fad5e738431.tar.bz2
Copied over from the automake/
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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, CFLAGS_PROFILE_V are the values we
+## would want the corresponding macros to be set to.
+##
+## CFLAGS_OPTIMIZE, CFLAGS_DEBUG, CFLAGS_PROFILE are set by the
+## 'VARIANT=<OPTIMIZE|DEBUG|PROFILE>' 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
+
+CFLAGS_DEFAULT=-g -Wall
+## 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) $(CPPFLAGS_GCC)
+CFLAGS = $(CFLAGS_DEFAULT) $(CPU_CFLAGS) $(XCFLAGS)
+CXXFLAGS = $(CFLAGS_DEFAULT) $(CPU_CFLAGS) $(XCXXFLAGS)
+ASFLAGS = $(CPU_ASFLAGS) $(CPU_CFLAGS) $(XASFLAGS)
+
+LINK_LIBS = $(LD_LIBS)
+
+## FIXME: This doesn't seem to be correct
+# when debugging, optimize flag: typically empty
+# some compilers do allow optimization with their "-g"
+CFLAGS_DEBUG_OPTIMIZE_V=-g
+CXXFLAGS_DEBUG_OPTIMIZE_V=-g
+LDFLAGS_DEBUG_V =
+
+# profile flag; use gprof(1)
+CFLAGS_PROFILE_V=-pg
+CXXFLAGS_PROFILE_V=-pg
+LDFLAGS_PROFILE_V =
+
+# List of library paths without -L
+LD_PATHS= $(PROJECT_RELEASE)/lib
+
+# ld flag for incomplete link
+LDFLAGS_INCOMPLETE = -r
+
+# ld flags for profiling, debugging
+LDFLAGS=$(LDFLAGS_PROFILE) $(LDFLAGS_DEBUG) $(LD_PATHS:%=-L %)
+
+#
+# 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 $@
+
+AS = $(CC)
+ASCOMPILE = $(AS) $(AM_ASFLAGS) $(ASFLAGS)
+
+${ARCH}/%.o: %.c
+ ${COMPILE} -o $@ -c $<
+
+${ARCH}/%.o: %.cc
+ ${CXXCOMPILE} -o $@ -c $<
+
+${ARCH}/%.o: %.cpp
+ ${CXXCOMPILE} -o $@ -c $<
+
+${ARCH}/%.o: %.cxx
+ ${CXXCOMPILE} -o $@ -c $<
+
+${ARCH}/%.o: %.C
+ ${CXXCOMPILE} -o $@ -c $<
+
+${ARCH}/%.o: %.S
+ ${ASCOMPILE} -DASM -o $@ -c $<
+
+# Make foo.rel from foo.o
+${ARCH}/%.rel: ${ARCH}/%.o
+ ${make-rel}
+
+# 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}
+
+CLEAN_DEPEND=$(DEPEND).tmp
+CLOBBER_DEPEND=$(DEPEND)
+
+# We deliberately don't have anything depend on the
+# $(DEPEND) file; otherwise it will get rebuilt even
+# on 'make clean'
+#
+
+## HACK: Specific to gcc
+## FIXME: The approach below is known to be conceptionally broken.
+depend-am: $(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 and profile cases
+ $(COMPILE) -M $^ | \
+ sed -e 's?^\(.*\)\.o[ ]*:?$$(ARCH)/\1.o:?' \
+ -e 's?$(ARCH)/?$$(ARCH)/?' >$(DEPEND).tmp
+ mv $(DEPEND).tmp $(DEPEND)
+depend: depend-am
+
+# pull in dependencies if they exist
+ifeq (${DEPEND},$(wildcard ${DEPEND}))
+include ${DEPEND}
+@ENDIF@
+
+
+# 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_PROFILE_V = PROFILE
+VARIANT_optimize_V = OPTIMIZE
+VARIANT_debug_V = DEBUG
+VARIANT_profile_V = PROFILE
+
+VARIANT_V = $(VARIANT_$(VARIANT)_V)
+
+## Setup the variant build subdirectory
+ARCH_OPTIMIZE_V = o-optimize
+ARCH_DEBUG_V = o-debug
+ARCH_PROFILE_V = o-profile
+
+ARCH__V = $(ARCH_OPTIMIZE_V)
+ARCH = $(ARCH_$(VARIANT_V)_V)
+
+## Setup the library suffix
+LIBSUFFIX_OPTIMIZE_V =
+LIBSUFFIX_DEBUG_V = _g
+LIBSUFFIX_PROFILE_V = _p
+LIBSUFFIX__V = $(LIBSUFFIX_OPTIMIZE_V)
+
+LIB_VARIANT = $(LIBSUFFIX_$(VARIANT_V)_V)
+LIBSUFFIX_VA = $(LIB_VARIANT).a
+
+## These are supposed to be set in make/custom/<bsp>.cfg
+## CFLAGS_OPTIMIZE_V =
+## CFLAGS_DEBUG_V =
+## CFLAGS_PROFILE_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
+RTEMS_CFLAGS_PROFILE_V =
+
+## 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 = $(RTEMS_CFLAGS_$(VARIANT_V)_V) $(CFLAGS_$(VARIANT_V)_V)
+AM_CXXFLAGS = $(RTEMS_CFLAGS_$(VARIANT_V)_V) $(CFLAGS_$(VARIANT_V)_V)