forked from Imagelibrary/rtems
98100d275f
made no attempt to divide the comments up and place them with just
the appropriate files. Here is an excerpt from Ralf's email:
Changes including comments on changes I made after cycling through
all the targets:
* Added ranlib support. Now all targets use "ranlib" instead of "ar -s"
to build an index for a library. If ranlib isn't detected during
configuration, check if ar -s is working and try "ar -s" instead of
* Removed $(XXX_FOR_TARGET) from make/target.cfg.in, use $(XXX) instead now.
* gcc-target-default.cfg: LINK_XXXX-defines reworked to solve the -l
problem under posix (cf gcc-target-default.cfg)
* rtems-glom replaced by Makefile-rules inside of the wrapup/Makefile.in
that has been using rtems-glom until now.
* Removed CCC and friends in gcc-target-default.cfg, as they have been
breaking CXX support.
* Removed CONFIG.$(TARGET_ARCH).CC lines from several custom/*.cfg
files, because this is now set in custom/default.cfg.
* Added aclocal/ar-s.m4, check whether "ar -s" is working
* Added aclocal/cygwin.m4 and aclocal/exeext.m4.
* Reworked aclocal/canonicalize-tools.m4: Added ar -s check; fixes for
problems when XXX_FOR_TARGET is given via environment variables (didn't
work for gcc until now), adding cygwin check, improved autoconf-cache
handling.
* Removed -l from make rule dependencies. LINK_LIBS is now allowed to
contain -L and -l. LINK_OBJS and LINK_FILES must not contain -L or -l.
gcc28 make-exe rules now link using $(LINK_OBJS) $(LINK_LIBS) => Almost
all custom/*.cfg are modified. This is very likely to break something
because of typos or having missed to edit a file.
Open problems, known bugs, things I didn't do:
* custom/p4000.cfg seems to be out of date and requires to be reviewed.
(JRS NOTE: It is subordinate p4650 and p4600 -- both of which build ok
after minor changes.)
* custom/psim.cfg needs to be reviewed, I added some changes to it, I am
insecure about.
(JRS NOTE: psim had a minor problem endif/endef swapped but runs fine.)
* rtems-glom.in can now be removed.
* gcc*.cfg files "make depend" rules don't honor language specific flags
(e.g CXXFLAGS is ignored for *.cc) - Nothing to worry about now, but may
cause problems for hosts/targets not using gcc or rtems-add-ons that use
external packages.
* AFAIS, the no_bsp BSP can't be build anymore, i.e. configure refused
to configure for it whatever I tried.
* The toplevel and toplevel+1 README files are quite out-dated
* cygwin.m4 isn't of much use for rtems. In most cases (cf.
aclocal/*.m4) it is worked around by directly using $host_os. I think
I'll remove it soon after the next snapshot
* Before release the cygwin patch needs to be tested under cygwin. I may
have broken/missed something (esp. the sed-pattern to convert \\ into /
may be broken).
* You should try to build/run the posix-BSP under solaris - I don't
expect problems, but I am not 100% sure, esp. with regard to ranlib/ar -s.
* You should consider to convert all make/compilers/*.cfg files into
make/compilers/*.cfg.in files and let autoconf generate the *.cfg. This
may help getting rid of some if/then/else statements and help
hard-coding some defines into those files in future and shouldn't
disturb now.
* Not having installed libc.a/libm.a on a host may still break building
rtems, esp. when using -disable-gcc28 as the gcc27-configuration scheme
directly accesses libc.a and libm.a. The problem should not appear when
using gcc28 because it references libc/libm only through -lc and -lm
which may be static or dynamic (I didn't test this).
* shgen is not yet included (I didn't yet have enough time to integrate it).
* I know about a few more configure-probs (esp. cross-checking
--enable-* flags).
+ warn/refuse to configure when --enable-libcdir and
--enable-gcc28 are given.
+ force --enable-libcdir when --disable-gcc28 is given
* Replaced KSHELL with @KSH@ in some shell scripts generated by configure.in.
* Added a dependency to aclocal/*.m4 in the toplevel Makefile => configure
and aclocal.m4 will now be rebuild when any aclocal/*.m4 file is changed
* Some changes to aclocal/gcc-pipe.m4 and aclocal/gcc-specs.m4
* Replaced i[[3456]]86-unknown-freebsd2.[[12]] with i[[3456]]86-*freebsd2.*
in configure.in, as I suppose there might exist a variety of valid vendors
(2nd field of the name-tripple)
* Disabled override MAKEFLAGS in toplevel Makefile.in - Potential
side-effects are not really clear to me.
* In mvme162.cfg, $(LINK_LIBS) is missing in the CC line in gcc28's make-exe
rule (yet another one I missed to edit). Just append $(LINK_LIBS) to
the "CC" line, like I hopefully did to ALL other custom/*.cfg files.
* the problem with mvme162lx.cfg is a follow-up problem of the
mvme162.cfg-bug.
* mvme162/console and idp/console had variables named Buffer which
conflicted with similarly named variables in some tests.
319 lines
7.9 KiB
INI
319 lines
7.9 KiB
INI
#
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# Shared compiler for all GNU tools configurations
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#
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# $Id$
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#
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CPPFLAGS=$(CFLAGS) $(XCPPFLAGS)
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CPLUS_CPPFLAGS=$(CFLAGS) $(XCPPFLAGS)
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##
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# CFLAGS_OPTIMIZE_V, CFLAGS_DEBUG_V, CFLAGS_PROFILE_V are the values we
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# would want the corresponding macros to be set to.
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#
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# CFLAGS_OPTIMIZE, CFLAGS_DEBUG, CFLAGS_PROFILE are set in the leaf
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# Makefiles by the 'debug:' and 'profile:' targets to their _V values.
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#
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# default flags
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# We only include the header files for KA9Q if it is enabled.
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INCLUDE_KA9Q_yes_V = -I$(PROJECT_INCLUDE)/ka9q
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INCLUDE_KA9Q = $(INCLUDE_KA9Q_$(HAS_KA9Q)_V)
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ifeq ($(RTEMS_USE_GCC272),yes)
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ifeq ($(RTEMS_CROSS_TARGET),no)
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ifdef RTEMS_LIBC_DIR
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RTEMS_LIBC_INCLUDES := -I$(RTEMS_LIBC_DIR)/include
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endif
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# Used for posix bsps
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CFLAGS_DEFAULT = $(CPU_DEFINES) $(CPU_CFLAGS) -Wall -ansi -fasm -g \
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-I$(PROJECT_INCLUDE) \
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$(INCLUDE_KA9Q) \
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$(RTEMS_LIBC_INCLUDES) $(DEFINES)
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ASMFLAGS=$(CPU_DEFINES) $(CPU_CFLAGS) -g \
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-I$(PROJECT_INCLUDE) \
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$(RTEMS_LIBC_INCLUDES) $(DEFINES)
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else
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# Used for embedded bsps
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# Ask gcc where it finds its own include files
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GCC_INCLUDE=$(shell $(CC) $(CPU_CFLAGS) -print-file-name=include $(GCCSED))
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CFLAGS_DEFAULT = $(CPU_DEFINES) $(CPU_CFLAGS) -Wall -ansi -fasm -g \
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-nostdinc -I$(PROJECT_INCLUDE) \
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$(INCLUDE_KA9Q) \
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-I$(RTEMS_LIBC_DIR)/include -I$(GCC_INCLUDE) $(DEFINES)
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ASMFLAGS=$(CPU_DEFINES) $(CPU_CFLAGS) -g \
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-nostdinc -I$(PROJECT_INCLUDE) \
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-I$(RTEMS_LIBC_DIR)/include -I$(GCC_INCLUDE) $(DEFINES)
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endif
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# default location of Standard C Library
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ifndef LIBC_LIBC
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LIBC_LIBC=$(RTEMS_LIBC_DIR)/lib/libc.a
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endif
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ifndef LIBC_LIBM
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LIBC_LIBM=$(RTEMS_LIBC_DIR)/lib/libm.a
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endif
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else
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CFLAGS_DEFAULT = $(CPU_DEFINES) $(CPU_CFLAGS) -Wall -ansi -fasm -g \
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-B$(PROJECT_RELEASE)/lib/ -specs bsp_specs -qrtems \
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$(INCLUDE_KA9Q) $(DEFINES)
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ASMFLAGS=$(CPU_DEFINES) $(CPU_CFLAGS) -g -I$(srcdir) \
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-B$(PROJECT_RELEASE)/lib/ -specs bsp_specs -qrtems $(DEFINES)
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# default location of Standard C Library
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ifndef LIBC_LIBC
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LIBC_LIBC=$(shell $(CC) $(CPU_CFLAGS) -print-file-name=libc.a $(GCCSED))
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endif
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ifndef LIBC_LIBM
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LIBC_LIBM=$(shell $(CC) $(CPU_CFLAGS) -print-file-name=libm.a $(GCCSED))
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endif
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endif
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# Define this to yes if C++ is included in the development environment.
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# This requires that at least the GNU C++ compiler and libg++ be installed.
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ifeq ($(RTEMS_HAS_CPLUSPLUS),yes)
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HAS_CPLUSPLUS=yes
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CPLUS_LD_LIBS += $(PROJECT_RELEASE)/lib/librtems++$(LIBSUFFIX_VA)
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else
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HAS_CPLUSPLUS=no
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endif
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# debug flag;
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CFLAGS_DEBUG_V+=-Wno-unused
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ifeq ($(RTEMS_USE_GCC272),no)
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CFLAGS_DEBUG_V+=-qrtems_debug
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endif
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# when debugging, optimize flag: typically empty
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# some compilers do allow optimization with their "-g"
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#CFLAGS_DEBUG_OPTIMIZE_V=
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# profile flag; use gprof(1)
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CFLAGS_PROFILE_V=-pg
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# default is to optimize
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CFLAGS_OPTIMIZE=$(CFLAGS_OPTIMIZE_V)
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# dynamic libraries
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CFLAGS_DYNAMIC_V=-fpic
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#ASFLAGS_DYNAMIC_V=
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CFLAGS=$(CFLAGS_DEFAULT) $(CFLAGS_OPTIMIZE) $(CFLAGS_DEBUG) $(CFLAGS_PROFILE)
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# List of library paths without -L
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LD_PATHS= $(PROJECT_RELEASE)/lib
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# libraries you want EVERYONE to link with
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#LD_LIBS=
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# ld flag to ensure pure-text
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#LDFLAGS_MUST_BE_PURE_V =
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# ld flag for [un]shared objects
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#LDFLAGS_STATIC_LIBRARIES_V =
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#LDFLAGS_SHARED_LIBRARIES_V =
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# ld flag for incomplete link
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LDFLAGS_INCOMPLETE = -r
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# Special linker options when building lib.so
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LDFLAGS_DYNAMIC_V = ??
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# Some dynamic linking systems want the preferred name recorded in the binary
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# ref: src/libxil/Makefile
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LDFLAGS_DYNAMIC_LIBNAME_V = -h $(DYNAMIC_VERSION_LIBNAME)
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# ld flags for profiling, debugging
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LDFLAGS_PROFILE_V =
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LDFLAGS_DEBUG_V =
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LDFLAGS=$(LDFLAGS_PROFILE) $(LDFLAGS_DEBUG) $(LD_PATHS:%=-L %)
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#
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# Stuff to clean and clobber for the compiler and its tools
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#
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CLEAN_CC = a.out *.o *.BAK
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CLOBBER_CC =
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#
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# Client compiler and support tools
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#
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# CPP command to write file to standard output
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CPP=$(CC) -E -ansi -w -Wp,-$$
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# flags set by cc when running cpp
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CPP_CC_FLAGS=-D__STDC__
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ASFLAGS=
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ASM4FLAGS := -I $(PROJECT_INCLUDE)
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# egrep regexp to ignore symbol table entries in ar archives.
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# Only used to make sure we skip them when coalescing libraries.
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# skip __.SYMDEF and empty names (maybe bug in ranlib??).
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AR_SYMBOL_TABLE="HIGHLY-UNLIKELY-TO-CONFLICT"
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ARFLAGS=ruv
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#
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# Command to convert a normal archive to one searchable by $(LD)
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#
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# NOTE: Obsolete, use $(RANLIB) instead, MKLIB may disappear soon
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MKLIB=$(RANLIB)
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#
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# How to compile stuff into ${ARCH} subdirectory
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#
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# NOTE: we override COMPILE.c
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#
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COMPILE.c=$(CC) $(CFLAGS) $(XCFLAGS) -c
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COMPILE.cc=$(CXX) $(CFLAGS) $(CXXFLAGS) -fno-rtti $(XCFLAGS) -c
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${ARCH}/%.o: %.c
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${COMPILE.c} -o $@ $<
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${ARCH}/%.o: %.cc
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${COMPILE.cc} -o $@ $<
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${ARCH}/%.o: %.S
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${COMPILE.c} -DASM -o $@ $<
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# strip out C++ style comments.
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${ARCH}/%.o: %.s
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sed -e 's/\/\/.*$$//' < $< | \
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$(CPP) $(ASMFLAGS) -I. -I$(srcdir) -DASM - >$(ARCH)/$*.i
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$(AS) $(ASFLAGS) -o $@ $(ARCH)/$*.i
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# $(CPP) $(CPPFLAGS) -DASM - < $< >$(ARCH)/$*.i
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# $(AS) $(ASFLAGS) -o $@ $(ARCH)/$*.i
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# $(RM) $(ARCH)/$*.i
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# Specify our own default rule for this to prevent having CFLAGS and
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# CPPFLAGS being passed to linker
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${ARCH}/%: ${ARCH}/%.o
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${CC} ${LDFLAGS} -o $@ $@.o ${LD_LIBS}
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# Make foo.rel from foo.o
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${ARCH}/%.rel: ${ARCH}/%.o
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${LD} $(LDFLAGS_INCOMPLETE) -o $@ $^
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# create $(ARCH)/pgm from pgm.sh
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${ARCH}/%: %.sh
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$(RM) $@
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$(CP) $< $@
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$(CHMOD) +x $@
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# Dependency files for use by gmake
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# NOTE: we don't put in $(TARGET_ARCH)
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# so that 'make clean' doesn't blow it away
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DEPEND=Depends-$(TARGET_ARCH:o-%=%)
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CLEAN_DEPEND=$(DEPEND).tmp
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CLOBBER_DEPEND=$(DEPEND)
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# We deliberately don't have anything depend on the
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# $(DEPEND) file; otherwise it will get rebuilt even
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# on 'make clean'
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#
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depend: $(C_FILES) $(CC_FILES) $(S_FILES)
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ifneq ($(words $(C_FILES) $(CC_FILES) $(S_FILES)), 0)
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# Use gcc -M to generate dependencies
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# Replace foo.o with $(ARCH)/foo.o
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# Replace $(ARCH) value with string $(ARCH)
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# so that it will for debug and profile cases
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$(COMPILE.c) -M $^ | \
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$(SED) -e 's?^\(.*\)\.o[ ]*:?$$(ARCH)/\1.o:?' \
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-e 's?$(ARCH)/?$$(ARCH)/?' >$(DEPEND).tmp
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$(MV) $(DEPEND).tmp $(DEPEND)
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endif
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# spell out all the LINK_FILE's, rather than using -lbsp, so
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# that $(LINK_FILES) can be a dependency
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# Start file must be one of
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# $(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).o
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# $(PROJECT_RELEASE)/lib/asmiface$(LIB_VARIANT).o
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# It defaults to start.o, but an app can override it.
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ifeq ($(START_BASE),)
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START_FILE=
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else
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START_FILE=$(PROJECT_RELEASE)/lib/$(START_BASE)$(LIB_VARIANT).o
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endif
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CONSTRUCTOR=
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LIBC_LOW=
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ifndef LIBGCC
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LIBGCC = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name $(GCCSED))
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endif
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#
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# NOTE: a rule to link an rtems' application should look similar to this
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# (cf. "make-exe" in make/custom/*.cfg):
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#
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# gcc27:
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# $(PGM): $(LINK_FILES)
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# $(LD) $(LDFLAGS) -o $@ $(LINK_OBJS) \
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# --start-group $(LIB_LIBS) --end-group
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#
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# gcc28:
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# $(PGM): $(LINK_FILES)
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# $(CC) $(CFLAGS) -o $@ $(LINK_OBJS) $(LIB_LIBS)
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#
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LINK_OBJS =\
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$(CONSTRUCTOR) \
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$(OBJS) \
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$(MANAGERS_NOT_WANTED:%=$(PROJECT_RELEASE)/lib/no-%$(LIB_VARIANT).rel) \
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$(PROJECT_RELEASE)/lib/libtest$(LIBSUFFIX_VA)
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LINK_FILES =\
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$(START_FILE) \
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$(CONSTRUCTOR) \
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$(OBJS) \
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$(MANAGERS_NOT_WANTED:%=$(PROJECT_RELEASE)/lib/no-%$(LIB_VARIANT).rel) \
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$(PROJECT_RELEASE)/lib/libtest$(LIBSUFFIX_VA) \
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$(PROJECT_RELEASE)/lib/librtemsall$(LIBSUFFIX_VA)
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ifeq ($(RTEMS_USE_GCC272),yes)
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LINK_LIBS = $(PROJECT_RELEASE)/lib/librtemsall$(LIBSUFFIX_VA)
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ifeq ($(RTEMS_CROSS_TARGET),yes)
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# NOTE: add libc and libgcc only for embedded targets
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# LIBC_LIBM should not be needed by rtems itself.
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# FIXME: If a BSP requires libm, its make/custom/*.cfg file should add
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# LIBC_LIBM to LINK_LIBS (untested)
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LINK_LIBS += $(LIBC_LIBC) $(LIBGCC)
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endif
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endif
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LINK_LIBS += $(LD_LIBS)
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#
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# Allow user to override link commands (to build a prom image, perhaps)
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#
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ifndef LINKCMDS
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LINKCMDS=$(PROJECT_RELEASE)/lib/linkcmds
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endif
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define make-rel
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$(LD) $(LDFLAGS_INCOMPLETE) $(XLDFLAGS) -o $@ $(OBJS)
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endef
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