diff options
Diffstat (limited to 'contrib/tcpdump/aclocal.m4')
| -rw-r--r-- | contrib/tcpdump/aclocal.m4 | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/contrib/tcpdump/aclocal.m4 b/contrib/tcpdump/aclocal.m4 index 788fb22..5391e9f 100644 --- a/contrib/tcpdump/aclocal.m4 +++ b/contrib/tcpdump/aclocal.m4 @@ -1,4 +1,4 @@ -dnl @(#) $Header: /tcpdump/master/tcpdump/aclocal.m4,v 1.80 2001/12/10 08:41:15 guy Exp $ (LBL) +dnl @(#) $Header: /tcpdump/master/tcpdump/aclocal.m4,v 1.80.2.4 2002/07/13 09:38:53 guy Exp $ (LBL) dnl dnl Copyright (c) 1995, 1996, 1997, 1998 dnl The Regents of the University of California. All rights reserved. @@ -157,6 +157,51 @@ AC_DEFUN(AC_LBL_C_INIT, fi ]) +# +# Try compiling a sample of the type of code that appears in +# gencode.c with "inline", "__inline__", and "__inline". +# +# Autoconf's AC_C_INLINE, at least in autoconf 2.13, isn't good enough, +# as it just tests whether a function returning "int" can be inlined; +# at least some versions of HP's C compiler can inline that, but can't +# inline a function that returns a struct pointer. +# +AC_DEFUN(AC_LBL_C_INLINE, + [AC_MSG_CHECKING(for inline) + AC_CACHE_VAL(ac_cv_lbl_inline, [ + ac_cv_lbl_inline="" + ac_lbl_cc_inline=no + for ac_lbl_inline in inline __inline__ __inline + do + AC_TRY_COMPILE( + [#define inline $ac_lbl_inline + static inline struct iltest *foo(void); + struct iltest { + int iltest1; + int iltest2; + }; + + static inline struct iltest * + foo() + { + static struct iltest xxx; + + return &xxx; + }],,ac_lbl_cc_inline=yes,) + if test "$ac_lbl_cc_inline" = yes ; then + break; + fi + done + if test "$ac_lbl_cc_inline" = yes ; then + ac_cv_lbl_inline=$ac_lbl_inline + fi]) + if test ! -z "$ac_cv_lbl_inline" ; then + AC_MSG_RESULT($ac_cv_lbl_inline) + else + AC_MSG_RESULT(no) + fi + AC_DEFINE_UNQUOTED(inline, $ac_cv_lbl_inline, [Define as token for inline if inlining supported])]) + dnl dnl Use pfopen.c if available and pfopen() not in standard libraries dnl Require libpcap |
