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 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 are set by the |
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37 | ## 'VARIANT=<OPTIMIZE|DEBUG>' targets to their _V values. |
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38 | |
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39 | ## XCPPFLAGS, XCFLAGS, XCXXFLAGS, XASFLAGS |
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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 | ## gcc >= 2.8.x |
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47 | GCCSPECS = $(GCC_SPECS) $(RTEMS_BSP_SPECS) |
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48 | else |
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49 | ## fall back to the old style compilers/*.cfg |
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50 | ## CONFIG.CC is supposed to be provided by <BSP>.cfg |
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51 | include $(CONFIG.CC) |
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52 | endif # RTEMS_USE_GCC |
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53 | |
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54 | DEFS = @DEFS@ |
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55 | |
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56 | CPPFLAGS = @CPPFLAGS@ $(CPU_DEFINES) $(DEFINES) $(XCPPFLAGS) |
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57 | CFLAGS = @RTEMS_CFLAGS@ $(XCFLAGS) |
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58 | ## FIXME: This should be correct, but is not supported, yet |
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59 | # CXXFLAGS = @RTEMS_CXXFLAGS@ $(XCXXFLAGS) |
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60 | ## Fall back to using RTEMS_CFLAGS for C++ |
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61 | CXXFLAGS = @RTEMS_CFLAGS@ $(XCXXFLAGS) |
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62 | ASFLAGS = $(CPU_ASFLAGS) $(CPU_CFLAGS) $(XASFLAGS) |
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63 | |
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64 | LINK_LIBS = $(LD_LIBS) |
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65 | |
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66 | # |
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67 | # Client compiler and support tools |
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68 | # |
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69 | |
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70 | # |
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71 | # How to compile stuff into ${ARCH} subdirectory |
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72 | # |
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73 | |
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74 | COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ |
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75 | $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) |
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76 | CCLD = $(CC) |
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77 | LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \ |
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78 | $(AM_LDFLAGS) $(LDFLAGS) -o $@ |
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79 | |
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80 | CXXCOMPILE = $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \ |
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81 | $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) |
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82 | CXXLD = $(CXX) |
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83 | CXXLINK = $(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) \ |
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84 | $(AM_LDFLAGS) $(LDFLAGS) -o $@ |
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85 | |
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86 | CCAS = $(CC) |
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87 | CCASCOMPILE = $(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS) |
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88 | |
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89 | ${ARCH}/%.o: %.c $(ARCH)/$(dirstamp) |
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90 | ${COMPILE} -o $@ -c $< |
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91 | |
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92 | ${ARCH}/%.o: %.cc $(ARCH)/$(dirstamp) |
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93 | ${CXXCOMPILE} -o $@ -c $< |
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94 | |
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95 | ${ARCH}/%.o: %.S $(ARCH)/$(dirstamp) |
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96 | ${CCASCOMPILE} -DASM -o $@ -c $< |
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97 | |
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98 | ${ARCH}/$(dirstamp): |
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99 | @$(mkdir_p) $(ARCH) |
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100 | @: > $(ARCH)/$(dirstamp) |
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101 | |
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102 | # Dependency files for use by gmake |
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103 | # NOTE: we don't put them into $(ARCH) |
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104 | # so that 'make clean' doesn't blow it away |
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105 | |
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106 | DEPEND=Depends-${ARCH} |
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107 | |
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108 | # We deliberately don't have anything depend on the |
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109 | # $(DEPEND) file; otherwise it will get rebuilt even |
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110 | # on 'make clean' |
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111 | # |
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112 | |
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113 | if RTEMS_USE_GCC |
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114 | ## HACK: Specific to gcc |
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115 | ## FIXME: The approach below is known to be conceptionally broken. |
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116 | depend-gcc: $(C_FILES) $(CC_FILES) $(S_FILES) |
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117 | ## Use gcc -M to generate dependencies |
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118 | ## Replace foo.o with $(ARCH)/foo.o |
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119 | ## Replace $(ARCH) value with string $(ARCH) |
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120 | ## so that it will for debug cases |
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121 | $(COMPILE) -M $^ | \ |
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122 | sed -e 's?^\(.*\)\.o[ ]*:?$$(ARCH)/\1.o:?' \ |
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123 | -e 's?$(ARCH)/?$$(ARCH)/?' >$(DEPEND).tmp |
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124 | mv $(DEPEND).tmp $(DEPEND) |
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125 | |
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126 | # pull in dependencies if they exist |
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127 | ifeq (${DEPEND},$(wildcard ${DEPEND})) |
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128 | include ${DEPEND} |
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129 | @ENDIF@ |
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130 | endif |
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131 | depend: depend-am |
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132 | |
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133 | # spell out all the LINK_FILE's, rather than using -lbsp, so |
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134 | # that $(LINK_FILES) can be a dependency |
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135 | |
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136 | LINK_OBJS = \ |
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137 | $(OBJS) \ |
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138 | $(MANAGERS_NOT_WANTED:%=$(PROJECT_LIB)/no-%$(LIB_VARIANT).rel) |
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139 | |
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140 | LINK_FILES =\ |
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141 | $(START_FILE) \ |
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142 | $(OBJS) \ |
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143 | $(MANAGERS_NOT_WANTED:%=$(PROJECT_LIB)/no-%$(LIB_VARIANT).rel) |
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144 | |
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145 | ## ------------------------------------------------------------------------- |
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146 | ## Setup the variant build subdirectory |
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147 | ARCH = o-optimize |
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148 | |
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149 | ## These are supposed to be set in make/custom/<bsp>.cfg |
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150 | CPU_CFLAGS = @CPU_CFLAGS@ |
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151 | |
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152 | ## ------------------------------------------------------------------------- |
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153 | |
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154 | CC = @CC@ $(GCCSPECS) |
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155 | CXX = @CXX@ $(GCCSPECS) |
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156 | CPP = @CPP@ $(GCCSPECS) |
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157 | |
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158 | LD = @LD@ |
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159 | OBJCOPY = @OBJCOPY@ |
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160 | NM = @NM@ |
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161 | SIZE = @SIZE@ |
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162 | STRIP = @STRIP@ |
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163 | |
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164 | ## |
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165 | AM_CPPFLAGS = $(RTEMS_CPPFLAGS) |
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166 | AM_CFLAGS = |
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167 | AM_CXXFLAGS = |
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168 | AM_CCASFLAGS = $(CPU_CFLAGS) $(RTEMS_CPPFLAGS) $(RTEMS_CCASFLAGS) |
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169 | |
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170 | clean-local: |
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171 | $(RM) -r o-optimize $(CLEANDIRS) |
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172 | $(RM) Depends-o-optimize.tmp |
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