lxdream 0.9.1| filename | acinclude.m4 |
| changeset | 985:52e64faac752 |
| prev | 977:8514fb4bc101 |
| next | 1147:e04e4af64626 |
| author | nkeynes |
| date | Mon Sep 13 10:13:42 2010 +1000 (13 years ago) |
| permissions | -rw-r--r-- |
| last change | Implement shadow-execution 'core' to run translator + interpreter side by side (for testing) |
| view | annotate | diff | log | raw |
1 # AC_CHECK_FASTCALL([if-ok],[if-notok])
2 # Test if the compiler recognizes __attribute__((regparm(3))) - we don't
3 # currently check if it actually works correctly, but probably should...
4 # -----------------------
5 AC_DEFUN([AC_CHECK_FASTCALL], [
6 AC_MSG_CHECKING([support for fastcall calling conventions]);
7 AC_RUN_IFELSE([
8 AC_LANG_SOURCE([[
9 int __attribute__((regparm(3))) foo(int a, int b) { return a+b; }
11 int main(int argc, char *argv[])
12 {
13 return foo( 1, 2 ) == 3 ? 0 : 1;
14 }]])], [
15 AC_MSG_RESULT([yes])
16 $1 ], [
17 AC_MSG_RESULT([no])
18 $2 ])
19 ])
21 # AC_CHECK_FRAME_ADDRESS([if-ok],[if-notok])
22 # Test if the compiler will let us modify the return address on the stack
23 # via __builtin_frame_address()
24 # -----------------------
25 AC_DEFUN([AC_CHECK_FRAME_ADDRESS], [
26 AC_MSG_CHECKING([if we have a working __builtin_frame_address()]);
27 AC_RUN_IFELSE([
28 AC_LANG_SOURCE([[
29 void * __attribute__((noinline)) first_arg( void *x, void *y ) { return x; }
30 int __attribute__((noinline)) foo( int arg, void *exc )
31 {
32 if( arg < 2 ) {
33 *(((void **)__builtin_frame_address(0))+1) = exc;
34 }
35 return 0;
36 }
38 int main(int argc, char *argv[])
39 {
40 goto *first_arg(&&start, &&except);
42 start:
43 return foo( argc, &&except ) + 1;
45 except:
46 return 0;
47 }]])], [
48 AC_MSG_RESULT([yes])
49 $1 ], [
50 AC_MSG_RESULT([no])
51 $2 ])
52 ])
54 # AC_CC_VERSION([if-gcc], [if-icc],[if-other])
55 # Check which C compiler we're using and branch accordingly, eg to set
56 # different optimization flags. Currently recognizes gcc and icc
57 # ---------------
58 AC_DEFUN([AC_CC_VERSION], [
59 _GCC_VERSION=`$CC --version | $SED -ne '/gcc/p'`
60 _ICC_VERSION=`$CC --version | $SED -ne '/(ICC)/p'`
61 AC_MSG_CHECKING([CC version])
62 if test -n "$_ICC_VERSION"; then
63 AC_MSG_RESULT([ICC])
64 [ $2 ]
65 elif test -n "$_GCC_VERSION"; then
66 AC_MSG_RESULT([GCC])
67 [ $1 ]
68 else
69 AC_MSG_RESULT([Unknown])
70 [ $3 ]
71 fi
72 ]);
74 # AC_OBJC_VERSION([if-gcc],[if-other], [if-none])
75 # Check which objective C compiler we're using and branch accordingly.
76 AC_DEFUN([AC_OBJC_VERSION], [
77 AC_MSG_CHECKING([OBJC version])
78 if test -n "$OBJC"; then
79 _GOBJC_VERSION=`$OBJC --version | $SED -ne '/(GCC)/p'`
80 if test -n "$_GOBJC_VERSION"; then
81 AC_MSG_RESULT([GCC])
82 [ $1 ]
83 else
84 AC_MSG_RESULT([Unknown])
85 [ $2 ]
86 fi
87 else
88 AC_MSG_RESULT([None])
89 [ $3 ]
90 fi
91 ]);
93 # AC_HAVE_OBJC([if-present],[if-not-present])
94 # Check if we have a working Objective-C compiler
95 AC_DEFUN([AC_HAVE_OBJC], [
96 AC_PROG_OBJC
97 AC_MSG_CHECKING([for a working Objective-C compiler])
98 AC_LANG_PUSH([Objective C])dnl
99 _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@interface Foo @end]], [])],
100 [AC_MSG_RESULT([yes])
101 $1 ],
102 [AC_MSG_RESULT([No])
103 $2 ]);
104 AC_LANG_POP([Objective C])
105 ]);
.