filename | acinclude.m4 |
changeset | 985:52e64faac752 |
prev | 977:8514fb4bc101 |
next | 1147:e04e4af64626 |
author | nkeynes |
date | Tue Feb 24 11:47:41 2009 +0000 (15 years ago) |
permissions | -rw-r--r-- |
last change | Set the source-type flags to -D__EXTENSIONS__ -U__STRICT_ANSI__ - this seems to work correctly on all the platforms we care about at the moment. Tweak the gcc-detection slightly (it was getting it wrong on some gcc builds) |
file | annotate | diff | log | raw |
nkeynes@923 | 1 | # AC_CHECK_FASTCALL([if-ok],[if-notok]) |
nkeynes@923 | 2 | # Test if the compiler recognizes __attribute__((regparm(3))) - we don't |
nkeynes@923 | 3 | # currently check if it actually works correctly, but probably should... |
nkeynes@923 | 4 | # ----------------------- |
nkeynes@923 | 5 | AC_DEFUN([AC_CHECK_FASTCALL], [ |
nkeynes@923 | 6 | AC_MSG_CHECKING([support for fastcall calling conventions]); |
nkeynes@923 | 7 | AC_RUN_IFELSE([ |
nkeynes@923 | 8 | AC_LANG_SOURCE([[ |
nkeynes@923 | 9 | int __attribute__((regparm(3))) foo(int a, int b) { return a+b; } |
nkeynes@923 | 10 | |
nkeynes@923 | 11 | int main(int argc, char *argv[]) |
nkeynes@923 | 12 | { |
nkeynes@923 | 13 | return foo( 1, 2 ) == 3 ? 0 : 1; |
nkeynes@923 | 14 | }]])], [ |
nkeynes@923 | 15 | AC_MSG_RESULT([yes]) |
nkeynes@923 | 16 | $1 ], [ |
nkeynes@923 | 17 | AC_MSG_RESULT([no]) |
nkeynes@923 | 18 | $2 ]) |
nkeynes@923 | 19 | ]) |
nkeynes@923 | 20 | |
nkeynes@927 | 21 | # AC_CHECK_FRAME_ADDRESS([if-ok],[if-notok]) |
nkeynes@927 | 22 | # Test if the compiler will let us modify the return address on the stack |
nkeynes@927 | 23 | # via __builtin_frame_address() |
nkeynes@927 | 24 | # ----------------------- |
nkeynes@927 | 25 | AC_DEFUN([AC_CHECK_FRAME_ADDRESS], [ |
nkeynes@927 | 26 | AC_MSG_CHECKING([if we have a working __builtin_frame_address()]); |
nkeynes@927 | 27 | AC_RUN_IFELSE([ |
nkeynes@927 | 28 | AC_LANG_SOURCE([[ |
nkeynes@927 | 29 | void * __attribute__((noinline)) first_arg( void *x, void *y ) { return x; } |
nkeynes@927 | 30 | int __attribute__((noinline)) foo( int arg, void *exc ) |
nkeynes@927 | 31 | { |
nkeynes@927 | 32 | if( arg < 2 ) { |
nkeynes@927 | 33 | *(((void **)__builtin_frame_address(0))+1) = exc; |
nkeynes@927 | 34 | } |
nkeynes@927 | 35 | return 0; |
nkeynes@927 | 36 | } |
nkeynes@927 | 37 | |
nkeynes@927 | 38 | int main(int argc, char *argv[]) |
nkeynes@927 | 39 | { |
nkeynes@927 | 40 | goto *first_arg(&&start, &&except); |
nkeynes@927 | 41 | |
nkeynes@927 | 42 | start: |
nkeynes@927 | 43 | return foo( argc, &&except ) + 1; |
nkeynes@927 | 44 | |
nkeynes@927 | 45 | except: |
nkeynes@927 | 46 | return 0; |
nkeynes@927 | 47 | }]])], [ |
nkeynes@927 | 48 | AC_MSG_RESULT([yes]) |
nkeynes@927 | 49 | $1 ], [ |
nkeynes@927 | 50 | AC_MSG_RESULT([no]) |
nkeynes@927 | 51 | $2 ]) |
nkeynes@927 | 52 | ]) |
nkeynes@927 | 53 | |
nkeynes@964 | 54 | # AC_CC_VERSION([if-gcc], [if-icc],[if-other]) |
nkeynes@964 | 55 | # Check which C compiler we're using and branch accordingly, eg to set |
nkeynes@964 | 56 | # different optimization flags. Currently recognizes gcc and icc |
nkeynes@964 | 57 | # --------------- |
nkeynes@964 | 58 | AC_DEFUN([AC_CC_VERSION], [ |
nkeynes@985 | 59 | _GCC_VERSION=`$CC --version | $SED -ne '/gcc/p'` |
nkeynes@964 | 60 | _ICC_VERSION=`$CC --version | $SED -ne '/(ICC)/p'` |
nkeynes@964 | 61 | AC_MSG_CHECKING([CC version]) |
nkeynes@985 | 62 | if test -n "$_ICC_VERSION"; then |
nkeynes@985 | 63 | AC_MSG_RESULT([ICC]) |
nkeynes@985 | 64 | [ $2 ] |
nkeynes@985 | 65 | elif test -n "$_GCC_VERSION"; then |
nkeynes@964 | 66 | AC_MSG_RESULT([GCC]) |
nkeynes@985 | 67 | [ $1 ] |
nkeynes@964 | 68 | else |
nkeynes@964 | 69 | AC_MSG_RESULT([Unknown]) |
nkeynes@964 | 70 | [ $3 ] |
nkeynes@964 | 71 | fi |
nkeynes@964 | 72 | ]); |
nkeynes@927 | 73 | |
nkeynes@964 | 74 | # AC_OBJC_VERSION([if-gcc],[if-other], [if-none]) |
nkeynes@964 | 75 | # Check which objective C compiler we're using and branch accordingly. |
nkeynes@964 | 76 | AC_DEFUN([AC_OBJC_VERSION], [ |
nkeynes@964 | 77 | AC_MSG_CHECKING([OBJC version]) |
nkeynes@964 | 78 | if test -n "$OBJC"; then |
nkeynes@964 | 79 | _GOBJC_VERSION=`$OBJC --version | $SED -ne '/(GCC)/p'` |
nkeynes@964 | 80 | if test -n "$_GOBJC_VERSION"; then |
nkeynes@964 | 81 | AC_MSG_RESULT([GCC]) |
nkeynes@964 | 82 | [ $1 ] |
nkeynes@964 | 83 | else |
nkeynes@964 | 84 | AC_MSG_RESULT([Unknown]) |
nkeynes@964 | 85 | [ $2 ] |
nkeynes@964 | 86 | fi |
nkeynes@964 | 87 | else |
nkeynes@964 | 88 | AC_MSG_RESULT([None]) |
nkeynes@964 | 89 | [ $3 ] |
nkeynes@964 | 90 | fi |
nkeynes@964 | 91 | ]); |
nkeynes@977 | 92 | |
nkeynes@977 | 93 | # AC_HAVE_OBJC([if-present],[if-not-present]) |
nkeynes@977 | 94 | # Check if we have a working Objective-C compiler |
nkeynes@977 | 95 | AC_DEFUN([AC_HAVE_OBJC], [ |
nkeynes@977 | 96 | AC_PROG_OBJC |
nkeynes@977 | 97 | AC_MSG_CHECKING([for a working Objective-C compiler]) |
nkeynes@977 | 98 | AC_LANG_PUSH([Objective C])dnl |
nkeynes@977 | 99 | _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@interface Foo @end]], [])], |
nkeynes@977 | 100 | [AC_MSG_RESULT([yes]) |
nkeynes@977 | 101 | $1 ], |
nkeynes@977 | 102 | [AC_MSG_RESULT([No]) |
nkeynes@977 | 103 | $2 ]); |
nkeynes@977 | 104 | AC_LANG_POP([Objective C]) |
nkeynes@977 | 105 | ]); |
.