[FFmpeg-devel] [PATCH]Change check_exec_crash in configure

[Carl Eugen Hoyos]

Hi!

Attached patch allows configure to enable ebp usage for icc compilations.

Ok to apply?

Carl Eugen
-------------- next part --------------
Index: configure
===================================================================
--- configure	(revision 17954)
+++ configure	(working copy)
@@ -670,6 +670,9 @@
 static void sighandler(int sig){
     raise(SIGTERM);
 }
+__attribute__((noinline)) void foo() {
+    { $code }
+}
 int main(void){
     signal(SIGILL, sighandler);
     signal(SIGFPE, sighandler);
@@ -677,7 +680,9 @@
 #ifdef SIGBUS
     signal(SIGBUS, sighandler);
 #endif
-    { $code }
+    volatile int i=0;
+    foo();
+    return i;
 }
 EOF
 }
@@ -1832,11 +1837,9 @@
     # if the base pointer is used to access it because the
     # base pointer is cleared in the inline assembly code.
     check_exec_crash <<EOF && enable ebp_available
-    volatile int i=0;
     __asm__ volatile (
         "xorl %%ebp, %%ebp"
     ::: "%ebp");
-    return i;
 EOF
 
     # check wether EBX is available on x86