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v 1.4.3

    1: 
    2: # Copyright (C) Igor Sysoev
    3: # Copyright (C) Nginx, Inc.
    4: 
    5: 
    6: # gcc 2.7.2.3, 2.8.1, 2.95.4, egcs-1.1.2
    7: #     3.0.4, 3.1.1, 3.2.3, 3.3.2, 3.3.3, 3.3.4, 3.4.0, 3.4.2
    8: #     4.0.0, 4.0.1, 4.1.0
    9: 
   10: 
   11: NGX_GCC_VER=`$CC -v 2>&1 | grep 'gcc version' 2>&1 \
   12:                          | sed -e 's/^.* version \(.*\)/\1/'`
   13: 
   14: echo " + gcc version: $NGX_GCC_VER"
   15: 
   16: have=NGX_COMPILER value="\"gcc $NGX_GCC_VER\"" . auto/define
   17: 
   18: 
   19: # Solaris 7's /usr/ccs/bin/as does not support "-pipe"
   20: 
   21: CC_TEST_FLAGS="-pipe"
   22: 
   23: ngx_feature="gcc -pipe switch"
   24: ngx_feature_name=
   25: ngx_feature_run=no
   26: ngx_feature_incs=
   27: ngx_feature_path=
   28: ngx_feature_libs=
   29: ngx_feature_test=
   30: . auto/feature
   31: 
   32: CC_TEST_FLAGS=
   33: 
   34: if [ $ngx_found = yes ]; then
   35:     PIPE="-pipe"
   36: fi
   37: 
   38: 
   39: case "$NGX_MACHINE" in
   40: 
   41:     sun4u | sun4v | sparc | sparc64 )
   42:         # "-mcpu=v9" enables the "casa" assembler instruction
   43:         CFLAGS="$CFLAGS -mcpu=v9"
   44:     ;;
   45: 
   46: esac
   47: 
   48: 
   49: # optimizations
   50: 
   51: #NGX_GCC_OPT="-O2"
   52: #NGX_GCC_OPT="-Os"
   53: NGX_GCC_OPT="-O"
   54: 
   55: #CFLAGS="$CFLAGS -fomit-frame-pointer"
   56: 
   57: case $CPU in
   58:     pentium)
   59:         # optimize for Pentium and Athlon
   60:         CPU_OPT="-march=pentium"
   61:         NGX_CPU_CACHE_LINE=32
   62:     ;;
   63: 
   64:     pentiumpro | pentium3)
   65:         # optimize for Pentium Pro, Pentium II and Pentium III
   66:         CPU_OPT="-march=pentiumpro"
   67:         NGX_CPU_CACHE_LINE=32
   68:     ;;
   69: 
   70:     pentium4)
   71:         # optimize for Pentium 4, gcc 3.x
   72:         CPU_OPT="-march=pentium4"
   73:         NGX_CPU_CACHE_LINE=128
   74:     ;;
   75: 
   76:     athlon)
   77:         # optimize for Athlon, gcc 3.x
   78:         CPU_OPT="-march=athlon"
   79:         NGX_CPU_CACHE_LINE=64
   80:     ;;
   81: 
   82:     opteron)
   83:         # optimize for Opteron, gcc 3.x
   84:         CPU_OPT="-march=opteron"
   85:         NGX_CPU_CACHE_LINE=64
   86:     ;;
   87: 
   88:     sparc32)
   89:         # build 32-bit UltraSparc binary
   90:         CPU_OPT="-m32"
   91:         CORE_LINK="$CORE_LINK -m32"
   92:         NGX_CPU_CACHE_LINE=64
   93:     ;;
   94: 
   95:     sparc64)
   96:         # build 64-bit UltraSparc binary
   97:         CPU_OPT="-m64"
   98:         CORE_LINK="$CORE_LINK -m64"
   99:         NGX_CPU_CACHE_LINE=64
  100:     ;;
  101: 
  102:     ppc64)
  103:         # build 64-bit PowerPC binary
  104:         CPU_OPT="-m64"
  105:         CPU_OPT="$CPU_OPT -falign-functions=32 -falign-labels=32"
  106:         CPU_OPT="$CPU_OPT -falign-loops=32 -falign-jumps=32"
  107:         CORE_LINK="$CORE_LINK -m64"
  108:         NGX_CPU_CACHE_LINE=128
  109:     ;;
  110: 
  111: esac
  112: 
  113: CC_AUX_FLAGS="$CC_AUX_FLAGS $CPU_OPT"
  114: 
  115: case "$NGX_GCC_VER" in
  116:     2.7*)
  117:         # batch build
  118:         CPU_OPT=
  119:     ;;
  120: esac
  121: 
  122: 
  123: CFLAGS="$CFLAGS $PIPE $CPU_OPT"
  124: 
  125: if [ ".$PCRE_OPT" = "." ]; then
  126:     PCRE_OPT="-O2 -fomit-frame-pointer $PIPE $CPU_OPT"
  127: else
  128:     PCRE_OPT="$PCRE_OPT $PIPE"
  129: fi
  130: 
  131: if [ ".$MD5_OPT" = "." ]; then
  132:     MD5_OPT="-O2 -fomit-frame-pointer $PIPE $CPU_OPT"
  133: else
  134:     MD5_OPT="$MD5_OPT $PIPE"
  135: fi
  136: 
  137: if [ ".$ZLIB_OPT" = "." ]; then
  138:     ZLIB_OPT="-O2 -fomit-frame-pointer $PIPE $CPU_OPT"
  139: else
  140:     ZLIB_OPT="$ZLIB_OPT $PIPE"
  141: fi
  142: 
  143: 
  144: # warnings
  145: 
  146: # -W requires at least -O
  147: CFLAGS="$CFLAGS ${NGX_GCC_OPT:--O} -W"
  148: 
  149: CFLAGS="$CFLAGS -Wall -Wpointer-arith"
  150: #CFLAGS="$CFLAGS -Wconversion"
  151: #CFLAGS="$CFLAGS -Winline"
  152: #CFLAGS="$CFLAGS -Wmissing-prototypes"
  153: 
  154: 
  155: case "$NGX_GCC_VER" in
  156:     3.* | 4.* )
  157:         # we have a lot of the unused function arguments
  158:         CFLAGS="$CFLAGS -Wno-unused-parameter"
  159:         # 4.2.1 shows the warning in wrong places
  160:         #CFLAGS="$CFLAGS -Wunreachable-code"
  161:     ;;
  162: 
  163:     *)
  164:         # we have a lot of the unused function arguments
  165:         CFLAGS="$CFLAGS -Wno-unused"
  166:     ;;
  167: esac
  168: 
  169: 
  170: # stop on warning
  171: CFLAGS="$CFLAGS -Werror"
  172: 
  173: # debug
  174: CFLAGS="$CFLAGS -g"
  175: 
  176: # DragonFly's gcc3 generates DWARF
  177: #CFLAGS="$CFLAGS -g -gstabs"
  178: 
  179: if [ ".$CPP" = "." ]; then
  180:     CPP="$CC -E"
  181: fi