src/cf/linux-test5.m4

   1
   2 AC_DEFUN([OPENAFS_GCC_SUPPORTS_MARCH], [
   3 AC_MSG_CHECKING(if $CC accepts -march=pentium)
   4 save_CFLAGS="$CFLAGS"
   5 CFLAGS="-MARCH=pentium"
   6 AC_CACHE_VAL(openafs_cv_gcc_supports_march,[
   7 AC_TRY_COMPILE(
   8 [],
   9 [int x;],
  10 openafs_cv_gcc_supports_march=yes,
  11 openafs_cv_gcc_supports_march=no)])
  12 AC_MSG_RESULT($openafs_cv_gcc_supports_march)
  13 if test x$openafs_cv_gcc_supports_march = xyes; then
  14   P5PLUS_KOPTS="-march=pentium"
  15 else
  16   P5PLUS_KOPTS="-m486 -malign-loops=2 -malign-jumps=2 -malign-functions=2"
  17 fi
  18 CFLAGS="$save_CFLAGS"
  19 ])
  20
  21 AC_DEFUN([OPENAFS_GCC_NEEDS_NO_STRICT_ALIASING], [
  22 AC_MSG_CHECKING(if $CC needs -fno-strict-aliasing)
  23 save_CFLAGS="$CFLAGS"
  24 CFLAGS="-fno-strict-aliasing"
  25 AC_CACHE_VAL(openafs_cv_gcc_needs_no_strict_aliasing,[
  26 AC_TRY_COMPILE(
  27 [],
  28 [int x;],
  29 openafs_cv_gcc_needs_no_strict_aliasing=yes,
  30 openafs_cv_gcc_needs_no_strict_aliasing=no)])
  31 AC_MSG_RESULT($openafs_cv_gcc_needs_no_strict_aliasing)
  32 if test x$openafs_cv_gcc_needs_no_strict_aliasing = xyes; then
  33   LINUX_GCC_KOPTS="$LINUX_GCC_KOPTS -fno-strict-aliasing"
  34 fi
  35 CFLAGS="$save_CFLAGS"
  36 ])
  37
  38 AC_DEFUN([OPENAFS_GCC_NEEDS_NO_STRENGTH_REDUCE], [
  39 AC_MSG_CHECKING(if $CC needs -fno-strength-reduce)
  40 save_CFLAGS="$CFLAGS"
  41 CFLAGS="-fno-strength-reduce"
  42 AC_CACHE_VAL(openafs_cv_gcc_needs_no_strength_reduce,[
  43 AC_TRY_COMPILE(
  44 [],
  45 [int x;],
  46 openafs_cv_gcc_needs_no_strength_reduce=yes,
  47 openafs_cv_gcc_needs_no_strength_reduce=no)])
  48 AC_MSG_RESULT($openafs_cv_gcc_needs_no_strength_reduce)
  49 if test x$openafs_cv_gcc_needs_no_strength_reduce = xyes; then
  50   LINUX_GCC_KOPTS="$LINUX_GCC_KOPTS -fno-strength-reduce"
  51 fi
  52 CFLAGS="$save_CFLAGS"
  53 ])
  54
  55 AC_DEFUN([OPENAFS_GCC_SUPPORTS_NO_COMMON], [
  56 AC_MSG_CHECKING(if $CC supports -fno-common)
  57 save_CFLAGS="$CFLAGS"
  58 CFLAGS="-fno-common"
  59 AC_CACHE_VAL(openafs_cv_gcc_supports_no_common,[
  60 AC_TRY_COMPILE(
  61 [],
  62 [int x;],
  63 openafs_cv_gcc_supports_no_common=yes,
  64 openafs_cv_gcc_supports_no_common=no)])
  65 AC_MSG_RESULT($openafs_cv_gcc_supports_no_common)
  66 if test x$openafs_cv_gcc_supports_no_common = xyes; then
  67   LINUX_GCC_KOPTS="$LINUX_GCC_KOPTS -fno-common"
  68 fi
  69 CFLAGS="$save_CFLAGS"
  70 ])
  71
  72 AC_DEFUN([OPENAFS_GCC_SUPPORTS_PIPE], [
  73 AC_MSG_CHECKING(if $CC supports -pipe)
  74 save_CFLAGS="$CFLAGS"
  75 CFLAGS="-pipe"
  76 AC_CACHE_VAL(openafs_cv_gcc_supports_pipe,[
  77 AC_TRY_COMPILE(
  78 [],
  79 [int x;],
  80 openafs_cv_gcc_supports_pipe=yes,
  81 openafs_cv_gcc_supports_pipe=no)])
  82 AC_MSG_RESULT($openafs_cv_gcc_supports_pipe)
  83 if test x$openafs_cv_gcc_supports_pipe = xyes; then
  84   LINUX_GCC_KOPTS="$LINUX_GCC_KOPTS -pipe"
  85 fi
  86 CFLAGS="$save_CFLAGS"
  87 ])