release/src/router/nginx/auto/cc/gcc

   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"
 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