nkeynes@923 | 1 | # AC_CHECK_FASTCALL([if-ok],[if-notok])
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nkeynes@923 | 2 | # Test if the compiler recognizes __attribute__((regparm(3))) - we don't
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nkeynes@923 | 3 | # currently check if it actually works correctly, but probably should...
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nkeynes@923 | 4 | # -----------------------
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nkeynes@923 | 5 | AC_DEFUN([AC_CHECK_FASTCALL], [
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nkeynes@923 | 6 | AC_MSG_CHECKING([support for fastcall calling conventions]);
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nkeynes@1212 | 7 | save_CFLAGS="$CFLAGS"
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nkeynes@1212 | 8 | CFLAGS="-Werror $save_CFLAGS"
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nkeynes@923 | 9 | AC_RUN_IFELSE([
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nkeynes@923 | 10 | AC_LANG_SOURCE([[
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nkeynes@923 | 11 | int __attribute__((regparm(3))) foo(int a, int b) { return a+b; }
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nkeynes@923 | 12 |
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nkeynes@923 | 13 | int main(int argc, char *argv[])
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nkeynes@923 | 14 | {
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nkeynes@923 | 15 | return foo( 1, 2 ) == 3 ? 0 : 1;
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nkeynes@923 | 16 | }]])], [
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nkeynes@923 | 17 | AC_MSG_RESULT([yes])
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nkeynes@923 | 18 | $1 ], [
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nkeynes@923 | 19 | AC_MSG_RESULT([no])
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nkeynes@1199 | 20 | $2 ], [
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nkeynes@1199 | 21 | AC_MSG_RESULT([no])
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nkeynes@923 | 22 | $2 ])
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nkeynes@1212 | 23 | CFLAGS="$save_CFLAGS"
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nkeynes@923 | 24 | ])
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nkeynes@923 | 25 |
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nkeynes@1147 | 26 | # AC_CHECK_FORCEINLINE([if-ok],[if-notok])
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nkeynes@1147 | 27 | # Test if the compiler recognizes __attribute__((always_inline))
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nkeynes@1147 | 28 | # -----------------------
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nkeynes@1147 | 29 | AC_DEFUN([AC_CHECK_FORCEINLINE], [
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nkeynes@1147 | 30 | AC_MSG_CHECKING([support for force inlining]);
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nkeynes@1147 | 31 | AC_COMPILE_IFELSE([
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nkeynes@1147 | 32 | AC_LANG_SOURCE([[
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nkeynes@1147 | 33 | static int __attribute__((always_inline)) foo(int a, int b) { return a+b; }
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nkeynes@1147 | 34 |
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nkeynes@1147 | 35 | int main(int argc, char *argv[])
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nkeynes@1147 | 36 | {
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nkeynes@1147 | 37 | return foo( 1, 2 ) == 3 ? 0 : 1;
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nkeynes@1147 | 38 | }]])], [
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nkeynes@1147 | 39 | FORCEINLINE="__attribute__((always_inline))"
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nkeynes@1147 | 40 | AC_MSG_RESULT([$FORCEINLINE])
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nkeynes@1147 | 41 | $1 ], [
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nkeynes@1147 | 42 | FORCEINLINE=""
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nkeynes@1147 | 43 | AC_MSG_RESULT([no])
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nkeynes@1147 | 44 | $2 ])
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nkeynes@1147 | 45 | ])
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nkeynes@1147 | 46 |
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nkeynes@927 | 47 | # AC_CHECK_FRAME_ADDRESS([if-ok],[if-notok])
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nkeynes@927 | 48 | # Test if the compiler will let us modify the return address on the stack
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nkeynes@927 | 49 | # via __builtin_frame_address()
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nkeynes@927 | 50 | # -----------------------
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nkeynes@927 | 51 | AC_DEFUN([AC_CHECK_FRAME_ADDRESS], [
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nkeynes@927 | 52 | AC_MSG_CHECKING([if we have a working __builtin_frame_address()]);
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nkeynes@927 | 53 | AC_RUN_IFELSE([
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nkeynes@927 | 54 | AC_LANG_SOURCE([[
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nkeynes@927 | 55 | void * __attribute__((noinline)) first_arg( void *x, void *y ) { return x; }
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nkeynes@927 | 56 | int __attribute__((noinline)) foo( int arg, void *exc )
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nkeynes@927 | 57 | {
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nkeynes@927 | 58 | if( arg < 2 ) {
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nkeynes@1198 | 59 | *(((void * volatile *)__builtin_frame_address(0))+1) = exc;
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nkeynes@927 | 60 | }
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nkeynes@927 | 61 | return 0;
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nkeynes@927 | 62 | }
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nkeynes@927 | 63 |
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nkeynes@927 | 64 | int main(int argc, char *argv[])
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nkeynes@927 | 65 | {
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nkeynes@927 | 66 | goto *first_arg(&&start, &&except);
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nkeynes@927 | 67 |
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nkeynes@927 | 68 | start:
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nkeynes@927 | 69 | return foo( argc, &&except ) + 1;
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nkeynes@927 | 70 |
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nkeynes@927 | 71 | except:
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nkeynes@927 | 72 | return 0;
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nkeynes@927 | 73 | }]])], [
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nkeynes@927 | 74 | AC_MSG_RESULT([yes])
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nkeynes@927 | 75 | $1 ], [
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nkeynes@927 | 76 | AC_MSG_RESULT([no])
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nkeynes@1199 | 77 | $2 ], [
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nkeynes@1199 | 78 | AC_MSG_RESULT([no])
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nkeynes@1199 | 79 | $2 ] )
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nkeynes@927 | 80 | ])
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nkeynes@927 | 81 |
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nkeynes@964 | 82 | # AC_CC_VERSION([if-gcc], [if-icc],[if-other])
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nkeynes@964 | 83 | # Check which C compiler we're using and branch accordingly, eg to set
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nkeynes@964 | 84 | # different optimization flags. Currently recognizes gcc and icc
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nkeynes@964 | 85 | # ---------------
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nkeynes@964 | 86 | AC_DEFUN([AC_CC_VERSION], [
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nkeynes@985 | 87 | _GCC_VERSION=`$CC --version | $SED -ne '/gcc/p'`
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nkeynes@964 | 88 | _ICC_VERSION=`$CC --version | $SED -ne '/(ICC)/p'`
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nkeynes@964 | 89 | AC_MSG_CHECKING([CC version])
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nkeynes@985 | 90 | if test -n "$_ICC_VERSION"; then
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nkeynes@985 | 91 | AC_MSG_RESULT([ICC])
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nkeynes@985 | 92 | [ $2 ]
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nkeynes@985 | 93 | elif test -n "$_GCC_VERSION"; then
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nkeynes@964 | 94 | AC_MSG_RESULT([GCC])
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nkeynes@985 | 95 | [ $1 ]
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nkeynes@964 | 96 | else
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nkeynes@964 | 97 | AC_MSG_RESULT([Unknown])
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nkeynes@964 | 98 | [ $3 ]
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nkeynes@964 | 99 | fi
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nkeynes@964 | 100 | ]);
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nkeynes@927 | 101 |
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nkeynes@964 | 102 | # AC_OBJC_VERSION([if-gcc],[if-other], [if-none])
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nkeynes@964 | 103 | # Check which objective C compiler we're using and branch accordingly.
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nkeynes@964 | 104 | AC_DEFUN([AC_OBJC_VERSION], [
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nkeynes@964 | 105 | AC_MSG_CHECKING([OBJC version])
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nkeynes@964 | 106 | if test -n "$OBJC"; then
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nkeynes@964 | 107 | _GOBJC_VERSION=`$OBJC --version | $SED -ne '/(GCC)/p'`
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nkeynes@964 | 108 | if test -n "$_GOBJC_VERSION"; then
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nkeynes@964 | 109 | AC_MSG_RESULT([GCC])
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nkeynes@964 | 110 | [ $1 ]
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nkeynes@964 | 111 | else
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nkeynes@964 | 112 | AC_MSG_RESULT([Unknown])
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nkeynes@964 | 113 | [ $2 ]
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nkeynes@964 | 114 | fi
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nkeynes@964 | 115 | else
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nkeynes@964 | 116 | AC_MSG_RESULT([None])
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nkeynes@964 | 117 | [ $3 ]
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nkeynes@964 | 118 | fi
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nkeynes@964 | 119 | ]);
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nkeynes@977 | 120 |
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nkeynes@1199 | 121 | # Check if the given C compiler flag is supported, and if so add it to CFLAGS
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nkeynes@1199 | 122 | AC_DEFUN([AC_CHECK_CFLAG], [
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nkeynes@1199 | 123 | AC_LANG_PUSH([C])
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nkeynes@1199 | 124 | AC_MSG_CHECKING([if $CC supports $1])
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nkeynes@1199 | 125 | save_CFLAGS="$CFLAGS"
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nkeynes@1199 | 126 | CFLAGS="$1 $CFLAGS"
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nkeynes@1199 | 127 | AC_COMPILE_IFELSE([
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nkeynes@1199 | 128 | AC_LANG_SOURCE([int main() { return 0; }])], [
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nkeynes@1199 | 129 | AC_MSG_RESULT([yes])
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nkeynes@1199 | 130 | $2 ], [
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nkeynes@1199 | 131 | CFLAGS="$save_CFLAGS"
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nkeynes@1199 | 132 | AC_MSG_RESULT([no])
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nkeynes@1199 | 133 | $3 ])
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nkeynes@1199 | 134 | AC_LANG_POP([C])
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nkeynes@1199 | 135 | ])
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nkeynes@1199 | 136 |
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nkeynes@1199 | 137 | # Check if the given OBJC compiler flag is supported, and if so add it to OBJCFLAGS
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nkeynes@1199 | 138 | AC_DEFUN([AC_CHECK_OBJCFLAG], [
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nkeynes@1199 | 139 | AC_LANG_PUSH([Objective C])
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nkeynes@1199 | 140 | AC_MSG_CHECKING([if $OBJC supports $1])
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nkeynes@1199 | 141 | save_OBJCFLAGS="$OBJCFLAGS"
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nkeynes@1199 | 142 | OBJCFLAGS="$1 $OBJCFLAGS"
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nkeynes@1199 | 143 | AC_COMPILE_IFELSE([
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nkeynes@1199 | 144 | AC_LANG_SOURCE([int main() { return 0; }])], [
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nkeynes@1199 | 145 | AC_MSG_RESULT([yes])
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nkeynes@1199 | 146 | $2 ], [
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nkeynes@1199 | 147 | OBJCFLAGS="$save_OBJCFLAGS"
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nkeynes@1199 | 148 | AC_MSG_RESULT([no])
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nkeynes@1199 | 149 | $3 ])
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nkeynes@1199 | 150 | AC_LANG_POP([Objective C])
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nkeynes@1199 | 151 | ])
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nkeynes@1199 | 152 |
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nkeynes@1199 | 153 |
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nkeynes@1199 | 154 |
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nkeynes@977 | 155 | # AC_HAVE_OBJC([if-present],[if-not-present])
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nkeynes@977 | 156 | # Check if we have a working Objective-C compiler
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nkeynes@977 | 157 | AC_DEFUN([AC_HAVE_OBJC], [
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nkeynes@977 | 158 | AC_PROG_OBJC
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nkeynes@977 | 159 | AC_MSG_CHECKING([for a working Objective-C compiler])
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nkeynes@977 | 160 | AC_LANG_PUSH([Objective C])dnl
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nkeynes@977 | 161 | _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@interface Foo @end]], [])],
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nkeynes@977 | 162 | [AC_MSG_RESULT([yes])
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nkeynes@977 | 163 | $1 ],
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nkeynes@977 | 164 | [AC_MSG_RESULT([No])
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nkeynes@977 | 165 | $2 ]);
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nkeynes@977 | 166 | AC_LANG_POP([Objective C])
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nkeynes@977 | 167 | ]);
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