buildlib

   1 #!/bin/sh
   2
   3 case "$1" in -h|-H|-help|--help)
   4         cat <<EOT
   5 Usage: ${0##*/} [-shared]
   6        -shared  also attempt to build a shared library
   7 Env:   CC       explicit "cc" compiler to use
   8        AR       explicit "ar" to use
   9        RANLIB   explicit "ranlib" to use
  10        CFLAGS   explicit compiler options to use
  11        FPIC     explicit -fPIC/-fpic (or none) option to use
  12 EOT
  13         exit 0
  14 esac
  15
  16 set -e
  17
  18 LIB=libBlocksRuntime.a
  19 SRC=BlocksRuntime
  20
  21 shared=
  22 [ z"$1" != z"-shared" -a z"$1" != z"--shared" ] || shared=1
  23
  24 if [ -n "$shared" ]; then
  25         UNAME_S="$(uname -s 2>/dev/null)" || :
  26         case "$UNAME_S" in
  27                 Darwin)
  28                         SHLIB="${LIB%.a}.dylib"
  29                         SHOPT="-dynamiclib -Wl,-all_load"
  30                         SHOPT2=
  31                         ;;
  32                 *)
  33                         SHLIB="${LIB%.a}.so"
  34                         SHOPT="-shared -Wl,-whole-archive"
  35                         SHOPT2="-Wl,-no-whole-archive"
  36                         ;;
  37         esac
  38 fi
  39
  40 if [ -z "$CC" ]; then
  41         if command -v gcc > /dev/null; then
  42                 CC=gcc
  43         elif command -v clang > /dev/null; then
  44                 CC=clang
  45         elif command -v cc > /dev/null; then
  46                 CC=cc
  47         else
  48                 echo "Could not guess name of compiler, please set CC" >&2
  49                 exit 2
  50         fi
  51 fi
  52
  53 echo "CC=$CC"
  54 : ${AR:=ar}
  55 echo "AR=$AR"
  56 : ${RANLIB:=ranlib}
  57 echo "RANLIB=$RANLIB"
  58
  59 if [ "${CFLAGS+set}" != "set" ]; then
  60         case "$CC" in
  61                 *gcc*|*clang*)
  62                         CFLAGS=-O2
  63                         ;;
  64                 *)
  65                         CFLAGS=-O
  66                         ;;
  67         esac
  68 fi
  69
  70 has_cc_opt()
  71 {
  72         "$CC" "$1" -o /tmp/cc.$$ -c -x c /dev/null >/dev/null 2>&1 &&
  73         rm -f /tmp/cc.$$
  74 }
  75 if [ "${FPIC+set}" != "set" ]; then
  76         if has_cc_opt "-fPIC"; then
  77                 FPIC="-fPIC"
  78         elif has_cc_opt "-fpic"; then
  79                 FPIC="-fpic"
  80         fi
  81 fi
  82 [ -z "$FPIC" ] || echo "FPIC=$FPIC"
  83
  84 echo "CFLAGS=$CFLAGS"
  85
  86 echo "LIB=$LIB"
  87 [ -z "$shared" ] || echo "SHLIB=$SHLIB"
  88 [ -z "$shared" ] || echo "SHOPT=$SHOPT"
  89 [ -z "$shared" ] || [ -z "$SHOPT2" ] || echo "SHOPT2=$SHOPT2"
  90 echo "SRC=$SRC"
  91
  92 (
  93         PS4= && set -ex
  94         ! test -e $LIB || rm $LIB
  95 ) || exit
  96 [ -z "$shared" ] ||
  97 (
  98         PS4= && set -ex
  99         ! test -e $SHLIB || rm $SHLIB
 100 ) || exit
 101 (
 102         PS4= && set -ex
 103         "$CC" -c $FPIC $CFLAGS -o $SRC/data.o $SRC/data.c &&
 104         "$CC" -c $FPIC $CFLAGS -o $SRC/runtime.o -I . $SRC/runtime.c &&
 105         "$AR" cr $LIB $SRC/data.o $SRC/runtime.o &&
 106         "$RANLIB" $LIB
 107 ) || exit
 108 [ -z "$shared" ] ||
 109 (
 110         PS4= && set -ex
 111         "$CC" $FPIC $CFLAGS -o "$SHLIB" $SHOPT $LIB $SHOPT2
 112 ) || exit