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#
#  $Id$
#
# gcc 2.6.x compiler for a "native" nocpu/nobsp system
# Compiler (and tools) configuration
#

# Prefix on the installed GNU tools
#  Just use the native tools
GNU_TOOLS_PREFIX=

# Additional target names (other than debug, profile)
TARGET_VARIANTS +=

#
# Pre-processor defines using the target options header file.
#
# Local tailoring (on the command line) can be done by setting XCFLAGS
# or XCPPFLAGS -- neither of which are never set in the Makefile's
#

CPPFLAGS=$(CFLAGS) $(XCPPFLAGS) $(DEFINES)

CPLUS_CPPFLAGS=$(CFLAGS) $(XCPPFLAGS) $(DEFINES)

#  This section makes the target dependent options file.

#  NDEBUG (C library)
#     if defined asserts do not generate code.  This is commonly used
#     as a command line option.
#
#  RTEMS_TEST_NO_PAUSE (RTEMS tests)
#     do not pause between screens of output in the rtems tests
#
#  NO_TABLE_MOVE (SPARC PORT)
#     do not have a second trap table -- use the BSP's
#
#  STACK_CHECKER_ON (RTEMS support code)
#     If defined, stack bounds checking is enabled.
#
#  RTEMS_DEBUG (RTEMS)
#     If defined, debug checks in RTEMS and support library code are enabled.

define make-target-options
	echo "/* #define NDEBUG 1 */ "                     >>$@
	echo "#define RTEMS_TEST_NO_PAUSE 1"               >>$@
	echo "/* #define STACK_CHECKER_ON  1 */"           >>$@
	echo "/* #define RTEMS_DEBUG  1 */"                >>$@
endef

#
# Local tailoring (on the command line) can be done by setting XCFLAGS
# which is never set in the Makefile's
#

#
# 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 in the leaf
# Makefiles by the 'debug:' and 'profile:' targets to their _V values.
#

# default flags

#
#  This contains the compiler options necessary to select the CPU model
#  and (hopefully) optimize for it. 
#
CPU_CFLAGS =

CFLAGS_DEFAULT = $(CPU_CFLAGS) -Wall -ansi -fasm

# optimize flag: typically -0, could use -O4 or -fast
# -O4 is ok for RTEMS
CFLAGS_OPTIMIZE_V=-O4 -fomit-frame-pointer

# debug flag; typically -g
CFLAGS_DEBUG_V=-g -Wno-unused

# profile flag; use gprof(1)
CFLAGS_PROFILE_V=-pg

# default is to optimize
CFLAGS_OPTIMIZE=$(CFLAGS_OPTIMIZE_V)

# dynamic libraries
CFLAGS_DYNAMIC_V=-fpic
# ASFLAGS_DYNAMIC_V=

CFLAGS=$(CFLAGS_DEFAULT) $(CFLAGS_OPTIMIZE) $(CFLAGS_DEBUG) $(CFLAGS_PROFILE) \
       -I $(PROJECT_INCLUDE)

# List of library paths without -L
LD_PATHS= $(PROJECT_RELEASE)/lib

# libraries you want EVERYONE to link with
LD_LIBS=

# ld flag to ensure pure-text
LDFLAGS_MUST_BE_PURE_V =

# ld flag for [un]shared objects
LDFLAGS_STATIC_LIBRARIES_V =
LDFLAGS_SHARED_LIBRARIES_V =

# ld flag for incomplete link
LDFLAGS_INCOMPLETE = -r

# Special linker options when building lib.so
LDFLAGS_DYNAMIC_V = ??

# Some dynamic linking systems want the preferred name recorded in the binary
# ref: src/libxil/Makefile
LDFLAGS_DYNAMIC_LIBNAME_V = -h $(DYNAMIC_VERSION_LIBNAME)

# ld flags for profiling, debugging
LDFLAGS_PROFILE_V =
LDFLAGS_DEBUG_V =

LDFLAGS=$(LDFLAGS_PROFILE) $(LDFLAGS_DEBUG) $(LD_PATHS:%=-L %)

#
# Stuff to clean and clobber for the compiler and its tools
#

CLEAN_CC = a.out *.o *.BAK
CLOBBER_CC =

#
# Client compiler and support tools
#

CC=gcc
CXX=$(CC)
CCC=$(CXX)

# CPP command to write file to standard output
CPP=$(CC) -E

# flags set by cc when running cpp
CPP_CC_FLAGS=-D__STDC__

AS=as
ASPP=ERROR_NO_ASPP

ASFLAGS=


# NOTE: should never use full path .. but there is no guarantee ld, etc
#       will be in the same directory as gcc.. so hope they are in the path
#       Don't do this on a real target!!!
LD=ld
NM=nm
AR=ar
# egrep regexp to ignore symbol table entries in ar archives.
# Only used to make sure we skip them when coalescing libraries.
# skip __.SYMDEF and empty names (maybe bug in ranlib??).
AR_SYMBOL_TABLE="HIGHLY-UNLIKELY-TO-CONFLICT"
ARFLAGS=ruv

# NOTE: see comment on ld, nm, ar
SIZE=size

#
# Command to convert a normal archive to one searchable by $(LD)
# Not needed on SVR4
#

MKLIB=echo library is complete:

#
# How to compile stuff into ${ARCH} subdirectory
#
# NOTE: we override COMPILE.c
#

COMPILE.c=$(CC) $(CFLAGS) $(CPPFLAGS) $(XCFLAGS) -c

${ARCH}/%.o: %.c
	${COMPILE.c} -o $@ $<

${ARCH}/%.o: %.cc
	${COMPILE.c} -o $@ $<

${ARCH}/%.o: %.S
	${COMPILE.c} -DASM -o $@ $<

${ARCH}/%.o: %.s
	$(CPP) $(CPPFLAGS) - <$*.s  >$(ARCH)/$*.i
	$(AS) $(ASFLAGS) -o $@ $(ARCH)/$*.i
#	$(RM) $(ARCH)/$*.i

# Specify our own default rule for this to prevent having CFLAGS and
#  CPPFLAGS being passed to linker
${ARCH}/%: ${ARCH}/%.o
	${CC} ${LDFLAGS} -o $@ $@.o ${LD_LIBS}

# Make foo.rel from foo.o
${ARCH}/%.rel: ${ARCH}/%.o
	${LD} $(LDFLAGS_INCOMPLETE) -o $@ $^

# create $(ARCH)/pgm from pgm.sh
${ARCH}/%: %.sh
	$(RM) $@
	$(CP) $< $@
	$(CHMOD) +x $@

# 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'
#

depend: $(C_FILES) $(CC_FILES) $(S_FILES)
ifneq ($(words $(C_FILES) $(CC_FILES) $(S_FILES)), 0)
#       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.c) -M   $^    |  \
	$(SED) -e 's?^\(.*\)\.o[ ]*:?$$(ARCH)/\1.o:?' \
	    -e 's?$(ARCH)/?$$(ARCH)/?'   >$(DEPEND).tmp
	$(MV) $(DEPEND).tmp $(DEPEND)
endif


# List (possibly empty) of required managers
# We require:
#    region  -- used by lib/libcsupport for malloc()
#    ext     -- used by libc for libc reentrancy hooks

MANAGERS_REQUIRED=region ext sem

# Create a RTEMS executable based on MANAGERS which was set in
#  app's Makefile

MANAGERS_NOT_WANTED=$(filter-out $(MANAGERS), $(MANAGER_LIST))
MANAGERS_NOT_WANTED:=$(filter-out $(MANAGERS_REQUIRED), $(MANAGERS_NOT_WANTED))

# spell out all the LINK_FILE's, rather than using -lbsp, so
#  that $(LINK_FILES) can be a dependency

# Start file must be one of
#    $(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).o
#    $(PROJECT_RELEASE)/lib/asmiface$(LIB_VARIANT).o
# It defaults to start.o, but an app can override it.

# Note:  Normally RTEMS provides a start file...
START_FILE=

CONSTRUCTOR=

LIBGCC = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name $(GCCSED))

LINK_FILES= $(START_FILE) \
    $(CONSTRUCTOR) \
    $(OBJS) \
    $(MANAGERS_NOT_WANTED:%=$(PROJECT_RELEASE)/lib/no-%$(LIB_VARIANT).rel) \
    $(LD_LIBS) \
    $(LIBC_EXTRA_LIBS)  \
    $(PROJECT_RELEASE)/lib/libtest$(LIBSUFFIX_VA) \
    $(PROJECT_RELEASE)/lib/librtemsall$(LIBSUFFIX_VA) \
    $(LIBC_LIBM) $(LIBC_LIBC) $(LIBGCC) 

# Here is the rule to actually build a $(ARCH)/foo.exe
# It also builds $(ARCH)/foo.sr and $(ARCH)/foo.nm
# Usage ref: src/tests/sptest/sp1/Makefile

# On Solaris at least you need to had /usr/ucblib/libucb.a

define make-exe
	$(CC) -o $(basename $@).exe $(LINK_FILES) -lc -lm
	$(NM) -n $(basename $@).exe > $(basename $@).num
	$(SIZE) $(basename $@).exe
endef

define make-rel
	$(LD) $(LDFLAGS_INCOMPLETE) $(XLDFLAGS) -o $@ $(OBJS)
endef