scrypt-1.2.1/libcperciva/cpusupport/Build/cpusupport.sh

   1 # Should be sourced by `command -p sh path/to/cpusupport.sh "$PATH"` from
   2 # within a Makefile.
   3 if ! [ ${PATH} = "$1" ]; then
   4         echo "WARNING: POSIX violation: $SHELL's command -p resets \$PATH" 1>&2
   5         PATH=$1
   6 fi
   7 # Standard output should be written to cpusupport-config.h, which is both a
   8 # C header file defining CPUSUPPORT_ARCH_FEATURE macros and sourceable sh
   9 # code which sets CFLAGS_ARCH_FEATURE environment variables.
  10 SRCDIR=`command -p dirname "$0"`
  11
  12 feature() {
  13         ARCH=$1
  14         FEATURE=$2
  15         shift 2;
  16         if ! [ -f ${SRCDIR}/cpusupport-$ARCH-$FEATURE.c ]; then
  17                 return
  18         fi
  19         printf "Checking if compiler supports $ARCH $FEATURE feature..." 1>&2
  20         for CFLAG in "$@"; do
  21                 if ${CC} ${CFLAGS} -D_POSIX_C_SOURCE=200809L ${CFLAG}   \
  22                     ${SRCDIR}/cpusupport-$ARCH-$FEATURE.c 2>/dev/null; then
  23                         rm -f a.out
  24                         break;
  25                 fi
  26                 CFLAG=NOTSUPPORTED;
  27         done
  28         case $CFLAG in
  29         NOTSUPPORTED)
  30                 echo " no" 1>&2
  31                 ;;
  32         "")
  33                 echo " yes" 1>&2
  34                 echo "#define CPUSUPPORT_${ARCH}_${FEATURE} 1"
  35                 ;;
  36         *)
  37                 echo " yes, via $CFLAG" 1>&2
  38                 echo "#define CPUSUPPORT_${ARCH}_${FEATURE} 1"
  39                 echo "#ifdef cpusupport_dummy"
  40                 echo "export CFLAGS_${ARCH}_${FEATURE}=\"${CFLAG}\""
  41                 echo "#endif"
  42                 ;;
  43         esac
  44 }
  45
  46 feature X86 CPUID ""
  47 feature X86 SSE2 "" "-msse2" "-msse2 -Wno-cast-align"
  48 feature X86 AESNI "" "-maes" "-maes -Wno-cast-align" "-maes -Wno-missing-prototypes -Wno-cast-qual"