check for too old gcc

[swftools.git] / m4 / gcc.2.95.m4

diff --git a/m4/gcc.2.95.m4 b/m4/gcc.2.95.m4
new file mode 100644 (file)
index 0000000..54b3809
--- /dev/null
+++ b/m4/gcc.2.95.m4
@@ -0,0 +1,30 @@
+AC_DEFUN(RFX_CHECK_OLDGCC,
+[
+AC_MSG_CHECKING([whether gcc supports lazy variable declaration])
+
+cat > conftest.cpp << EOF
+#include <stdlib.h>
+#include <stdio.h>
+
+int main (int argc, char*argv[])
+{
+    int a,b;
+    b=3;
+    int c;
+    c=4
+    return 0;
+}
+EOF
+
+testprog_link='$CC $CPPFLAGS $CFLAGS conftest.cpp -o conftest${ac_exeext}'
+if { (eval echo gcc.2.95.m4:19: \"$testprog_link\") 1>&5; (eval $testprog_link) 2>&5; } && test -s conftest${ac_exeext} && ./conftest${ac_exeext}; then
+  AC_MSG_RESULT(yes)
+  GCC_IS_OK=true
+  export GCC_IS_OK
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.cpp >&5
+  AC_MSG_RESULT(no)
+fi
+rm -f conftest*
+])