sync to 0.30.213

[util-vserver.git] / m4 / ensc_dietlibc.m4

diff --git a/m4/ensc_dietlibc.m4 b/m4/ensc_dietlibc.m4
index f594db7..ac0ae37 100644 (file)
--- a/m4/ensc_dietlibc.m4
+++ b/m4/ensc_dietlibc.m4
@@ -1,4 +1,4 @@
-dnl $Id: ensc_dietlibc.m4 2091 2005-05-05 19:13:52Z ensc $
+dnl $Id: ensc_dietlibc.m4 2453 2007-01-17 09:54:53Z dhozac $
 
 dnl Copyright (C) 2002 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
 dnl  
@@ -51,6 +51,32 @@ AC_DEFUN([_ENSC_DIETLIBC_C99],
        fi
 ])
 
+AC_DEFUN([_ENSC_DIETLIBC_SYSCALL],
+[
+       AH_TEMPLATE([ENSC_DIETLIBC_HAS_SYSCALL], [Define to 1 if dietlibc declares syscall])
+
+       AC_CACHE_CHECK([whether dietlibc declares syscall], [ensc_cv_c_dietlibc_syscall],
+       [
+               _ensc_dietlibc_syscall_old_CC="$CC"
+               CC="${DIET:-diet} $CC"
+
+               AC_LANG_PUSH(C)
+               AC_COMPILE_IFELSE([
+                       #include <sys/syscall.h>
+                       long int syscall(long int __sysno, ...);
+               ],
+               [ensc_cv_c_dietlibc_syscall=no],
+               [ensc_cv_c_dietlibc_syscall=yes])
+               AC_LANG_POP
+
+               CC="$_ensc_dietlibc_syscall_old_CC"
+       ])
+
+       if test x"$ensc_cv_c_dietlibc_syscall" = xyes; then
+               AC_DEFINE(ENSC_DIETLIBC_HAS_SYSCALL,1)
+       fi
+])
+
 dnl Usage: ENSC_ENABLE_DIETLIBC(<conditional>[,<min-version>])
 dnl        <conditional> ... automake-conditional which will be set when
 dnl                          dietlibc shall be enabled
@@ -134,21 +160,7 @@ AC_DEFUN([ENSC_ENABLE_DIETLIBC],
 
        if test x"$ensc_have_dietlibc" != xno; then
                _ENSC_DIETLIBC_C99
+               _ENSC_DIETLIBC_SYSCALL
        fi
 ])
 
-
-dnl Usage: ENSC_DIETLIBC_SANITYCHECK
-AC_DEFUN([ENSC_DIETLIBC_SANITYCHECK],
-[
-       AC_REQUIRE([AC_CANONICAL_HOST])
-       AC_REQUIRE([ENSC_ENABLE_DIETLIBC])
-
-       if test "$host_cpu" = x86_64 -a $ENSC_VERSION_DIETLIBC_NUM -le 0027; then
-               AC_MSG_WARN([***                                                             ***])
-               AC_MSG_WARN([*** dietlibc<=0.27 is known to be broken for x86_64 systems     ***])
-               AC_MSG_WARN([*** please make sure that at least the environ.S fix is applied ***])
-               AC_MSG_WARN([*** and lib/__nice.c added                                      ***])
-               AC_MSG_WARN([***                                                             ***])
-       fi
-])