[9ea3832c] | 1 | ## |
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| 2 | ## $Id$ |
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| 3 | ## |
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| 4 | |
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| 5 | ## ------------------------------------------------------------------------- |
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| 6 | ## NOTE: This file is rather immature and has to be considered to be |
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| 7 | ## almost experimental. |
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| 8 | ## |
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| 9 | ## Expect frequent changes -- It deserves to be cleaned up :( |
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| 10 | ## ------------------------------------------------------------------------- |
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| 11 | |
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| 12 | ## The section below is based on make/compilers/gcc-target-default.cfg |
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| 13 | ## used in former versions of RTEMS. |
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| 14 | |
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| 15 | ## |
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| 16 | ## Set up the flags for the toolchains: |
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| 17 | ## |
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| 18 | ## We are considering 3 different building schemes here: |
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| 19 | ## * Using gcc's being able to accept -specs (aka gcc-2.8 building scheme) |
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| 20 | ## * Using gcc's not being able to accept -specs (aka gcc-2.7.2 building |
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| 21 | ## scheme) |
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| 22 | ## * Using third party toolchains (aka non-gcc building scheme) |
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| 23 | ## |
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| 24 | ## Automake conditionals in use: |
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| 25 | ## RTEMS_USE_GCC .. if we are using GCC |
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| 26 | |
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| 27 | ## NOTES: |
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| 28 | ## * The gcc-2.8 building scheme is the nominal building scheme and |
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| 29 | ## is actively supported. |
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| 30 | ## * The non-gcc building scheme requires manually setting up environment |
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| 31 | ## variables and is hardly tested at all |
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| 32 | |
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| 33 | ## CFLAGS_OPTIMIZE_V, CFLAGS_DEBUG_V, CFLAGS_PROFILE_V are the values we |
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| 34 | ## would want the corresponding macros to be set to. |
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| 35 | ## |
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| 36 | ## CFLAGS_OPTIMIZE, CFLAGS_DEBUG, CFLAGS_PROFILE are set by the |
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| 37 | ## 'VARIANT=<OPTIMIZE|DEBUG|PROFILE>' targets to their _V values. |
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| 38 | |
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[5261406] | 39 | ## XCPPFLAGS, XCFLAGS, XASFLAGS |
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[9ea3832c] | 40 | ## are used to add flags from the shell |
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| 41 | ## cf. make.info ("Implicit rules/variables" for details) |
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| 42 | |
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| 43 | if RTEMS_USE_GCC |
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| 44 | ## All the stuff below is specific to gcc |
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| 45 | |
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| 46 | CFLAGS_DEFAULT=-g -Wall |
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| 47 | ## gcc >= 2.8.x |
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| 48 | GCCSPECS = $(GCC_SPECS) $(RTEMS_BSP_SPECS) |
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| 49 | else |
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| 50 | ## fall back to the old style compilers/*.cfg |
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| 51 | ## CONFIG.CC is supposed to be provided by <BSP>.cfg |
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| 52 | include $(CONFIG.CC) |
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| 53 | endif # RTEMS_USE_GCC |
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| 54 | |
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| 55 | DEFS = @DEFS@ |
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| 56 | |
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| 57 | CPPFLAGS = @CPPFLAGS@ $(CPU_DEFINES) \ |
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| 58 | $(DEFINES) $(XCPPFLAGS) $(CPPFLAGS_GCC) |
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| 59 | CFLAGS = $(CFLAGS_DEFAULT) $(CPU_CFLAGS) $(XCFLAGS) |
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| 60 | ASFLAGS = $(CPU_ASFLAGS) $(CPU_CFLAGS) $(XASFLAGS) |
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| 61 | |
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| 62 | ## FIXME: This doesn't seem to be correct |
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| 63 | # when debugging, optimize flag: typically empty |
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| 64 | # some compilers do allow optimization with their "-g" |
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| 65 | CFLAGS_DEBUG_OPTIMIZE_V=-g |
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| 66 | LDFLAGS_DEBUG_V = |
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| 67 | |
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| 68 | # profile flag; use gprof(1) |
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| 69 | CFLAGS_PROFILE_V=-pg |
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| 70 | LDFLAGS_PROFILE_V = |
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| 71 | |
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| 72 | # List of library paths without -L |
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| 73 | LD_PATHS= $(PROJECT_RELEASE)/lib |
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| 74 | |
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| 75 | # ld flag for incomplete link |
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| 76 | LDFLAGS_INCOMPLETE = -r |
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| 77 | |
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| 78 | # ld flags for profiling, debugging |
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| 79 | LDFLAGS=$(LDFLAGS_PROFILE) $(LDFLAGS_DEBUG) $(LD_PATHS:%=-L %) |
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| 80 | |
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| 81 | # |
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| 82 | # How to compile stuff into ${ARCH} subdirectory |
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| 83 | # |
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| 84 | |
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| 85 | COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ |
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| 86 | $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) |
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| 87 | CCLD = $(CC) |
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| 88 | LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \ |
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| 89 | $(AM_LDFLAGS) $(LDFLAGS) -o $@ |
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| 90 | |
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[5261406] | 91 | CCASCOMPILE = $(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS) |
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[9ea3832c] | 92 | |
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| 93 | ${ARCH}/%.o: %.c |
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| 94 | ${COMPILE} -o $@ -c $< |
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| 95 | |
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| 96 | ${ARCH}/%.o: %.S |
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[5261406] | 97 | ${CCASCOMPILE} -o $@ -c $< |
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[9ea3832c] | 98 | |
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| 99 | # Make foo.rel from foo.o |
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| 100 | ${ARCH}/%.rel: ${ARCH}/%.o |
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| 101 | ${make-rel} |
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| 102 | |
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| 103 | # Dependency files for use by gmake |
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| 104 | # NOTE: we don't put them into $(ARCH) |
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| 105 | # so that 'make clean' doesn't blow it away |
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| 106 | |
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| 107 | DEPEND=Depends-${ARCH} |
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| 108 | |
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| 109 | CLEAN_DEPEND=$(DEPEND).tmp |
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| 110 | CLOBBER_DEPEND=$(DEPEND) |
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| 111 | |
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| 112 | # We deliberately don't have anything depend on the |
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| 113 | # $(DEPEND) file; otherwise it will get rebuilt even |
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| 114 | # on 'make clean' |
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| 115 | # |
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| 116 | |
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| 117 | ## HACK: Specific to gcc |
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| 118 | ## FIXME: The approach below is known to be conceptionally broken. |
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| 119 | depend-am: $(C_FILES) $(CC_FILES) $(S_FILES) |
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| 120 | ## Use gcc -M to generate dependencies |
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| 121 | ## Replace foo.o with $(ARCH)/foo.o |
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| 122 | ## Replace $(ARCH) value with string $(ARCH) |
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| 123 | ## so that it will for debug and profile cases |
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| 124 | $(COMPILE) -M $^ | \ |
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| 125 | sed -e 's?^\(.*\)\.o[ ]*:?$$(ARCH)/\1.o:?' \ |
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| 126 | -e 's?$(ARCH)/?$$(ARCH)/?' >$(DEPEND).tmp |
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| 127 | mv $(DEPEND).tmp $(DEPEND) |
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| 128 | depend: depend-am |
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| 129 | |
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| 130 | # pull in dependencies if they exist |
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| 131 | ifeq (${DEPEND},$(wildcard ${DEPEND})) |
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| 132 | include ${DEPEND} |
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| 133 | @ENDIF@ |
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| 134 | |
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| 135 | if RTEMS_USE_GCC |
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| 136 | ## gcc >= 2.8 |
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| 137 | define make-rel |
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| 138 | $(LINK) -qnolinkcmds -nostdlib -Wl,-r $(XLDFLAGS) $^ |
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| 139 | endef |
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| 140 | else |
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| 141 | ## non-gcc |
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| 142 | define make-rel |
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| 143 | $(LINK) $(XLDFLAGS) $^ |
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| 144 | endef |
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| 145 | endif |
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| 146 | |
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| 147 | ## ------------------------------------------------------------------------- |
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| 148 | |
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| 149 | ## translate VARIANT into VARIANT_V |
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| 150 | VARIANT = OPTIMIZE |
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| 151 | |
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| 152 | VARIANT_OPTIMIZE_V = OPTIMIZE |
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| 153 | VARIANT_DEBUG_V = DEBUG |
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| 154 | VARIANT_PROFILE_V = PROFILE |
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| 155 | VARIANT_optimize_V = OPTIMIZE |
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| 156 | VARIANT_debug_V = DEBUG |
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| 157 | VARIANT_profile_V = PROFILE |
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| 158 | |
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| 159 | VARIANT_V = $(VARIANT_$(VARIANT)_V) |
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| 160 | |
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| 161 | ## Setup the variant build subdirectory |
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| 162 | ARCH_OPTIMIZE_V = o-optimize |
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| 163 | ARCH_DEBUG_V = o-debug |
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| 164 | ARCH_PROFILE_V = o-profile |
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| 165 | |
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| 166 | ARCH__V = $(ARCH_OPTIMIZE_V) |
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| 167 | ARCH = $(ARCH_$(VARIANT_V)_V) |
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| 168 | |
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| 169 | ## Setup the library suffix |
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| 170 | LIBSUFFIX_OPTIMIZE_V = |
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| 171 | LIBSUFFIX_DEBUG_V = _g |
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| 172 | LIBSUFFIX_PROFILE_V = _p |
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| 173 | LIBSUFFIX__V = $(LIBSUFFIX_OPTIMIZE_V) |
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| 174 | |
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| 175 | LIB_VARIANT = $(LIBSUFFIX_$(VARIANT_V)_V) |
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| 176 | LIBSUFFIX_VA = $(LIB_VARIANT).a |
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| 177 | |
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| 178 | ## These are supposed to be set in make/custom/<bsp>.cfg |
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| 179 | ## CFLAGS_OPTIMIZE_V = |
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| 180 | ## CFLAGS_DEBUG_V = |
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| 181 | ## CFLAGS_PROFILE_V = |
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| 182 | CFLAGS__V = $(CFLAGS_OPTIMIZE_V) |
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| 183 | |
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| 184 | ## ------------------------------------------------------------------------ |
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| 185 | ## Setup hard-coded flags |
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| 186 | if RTEMS_USE_GCC |
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| 187 | ## gcc >= gcc-2.8 |
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| 188 | RTEMS_CFLAGS_OPTIMIZE_V = |
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| 189 | RTEMS_CFLAGS_DEBUG_V = -qrtems_debug -Wno-unused |
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| 190 | RTEMS_CFLAGS_PROFILE_V = |
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| 191 | |
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| 192 | ## non-gcc |
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| 193 | ## We can't guess what flags might be required here. |
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| 194 | ## Pass the values from the environment if you want to apply them. |
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| 195 | endif |
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| 196 | RTEMS_CFLAGS__V = $(RTEMS_CFLAGS_OPTIMIZE_V) |
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| 197 | |
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| 198 | ## ------------------------------------------------------------------------- |
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| 199 | |
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| 200 | CC = @CC@ $(GCCSPECS) |
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| 201 | CPP = @CPP@ $(GCCSPECS) |
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| 202 | |
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| 203 | ## |
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| 204 | AM_CPPFLAGS = $(RTEMS_CPPFLAGS) |
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| 205 | |
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| 206 | AM_CFLAGS = $(RTEMS_CFLAGS_$(VARIANT_V)_V) $(CFLAGS_$(VARIANT_V)_V) |
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[5261406] | 207 | |
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| 208 | # AM_CFLAGS = $(RTEMS_BSP_CFLAGS) $(RTEMS_CFLAGS) |
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| 209 | AM_CCASFLAGS = $(RTEMS_BSP_CFLAGS) $(RTEMS_CPPFLAGS) $(RTEMS_ASFLAGS) |
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