lxdream.org :: lxdream/acinclude.m4 r1147:e04e4af64626

filename	acinclude.m4
changeset	1147:e04e4af64626
prev	985:52e64faac752
next	1198:407659e01ef0
author	nkeynes
date	Sat Jan 22 06:07:17 2011 +1000 (13 years ago)
permissions	-rw-r--r--
last change	Mark the NV vertex range functions as weak (to keep things working on drivers that don't provide the entry points) Set the fence at the start (really just to prevent an error the first time around)

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     1.1 --- a/acinclude.m4	Tue Feb 24 11:47:41 2009 +0000
     1.2 +++ b/acinclude.m4	Sat Jan 22 06:07:17 2011 +1000
     1.3 @@ -18,6 +18,27 @@
     1.4     $2 ])
     1.5  ])
     1.6  
     1.7 +# AC_CHECK_FORCEINLINE([if-ok],[if-notok])
     1.8 +# Test if the compiler recognizes __attribute__((always_inline))
     1.9 +# -----------------------
    1.10 +AC_DEFUN([AC_CHECK_FORCEINLINE], [
    1.11 +AC_MSG_CHECKING([support for force inlining]);
    1.12 +AC_COMPILE_IFELSE([
    1.13 +  AC_LANG_SOURCE([[
    1.14 +static int __attribute__((always_inline)) foo(int a, int b) { return a+b; }
    1.15 +
    1.16 +int main(int argc, char *argv[])
    1.17 +{
    1.18 +   return foo( 1, 2 ) == 3 ? 0 : 1;
    1.19 +}]])], [ 
    1.20 +   FORCEINLINE="__attribute__((always_inline))"
    1.21 +   AC_MSG_RESULT([$FORCEINLINE])
    1.22 +   $1 ], [ 
    1.23 +   FORCEINLINE=""
    1.24 +   AC_MSG_RESULT([no])
    1.25 +   $2 ])
    1.26 +])
    1.27 +
    1.28  # AC_CHECK_FRAME_ADDRESS([if-ok],[if-notok])
    1.29  # Test if the compiler will let us modify the return address on the stack
    1.30  # via __builtin_frame_address()