Mercurial > hg > CbC > CbC_gcc

comparison libiberty/aclocal.m4 @ 67:f6334be47118

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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 22 Mar 2011 17:18:12 +0900
parents a06113de4d67
children 04ced10e8804
comparison
equal deleted inserted replaced
65:65488c3d617d 67:f6334be47118
170 otherwise it will be automatically deduced at run-time. 170 otherwise it will be automatically deduced at run-time.
171 STACK_DIRECTION > 0 => grows toward higher addresses 171 STACK_DIRECTION > 0 => grows toward higher addresses
172 STACK_DIRECTION < 0 => grows toward lower addresses 172 STACK_DIRECTION < 0 => grows toward lower addresses
173 STACK_DIRECTION = 0 => direction of growth unknown]) 173 STACK_DIRECTION = 0 => direction of growth unknown])
174 ]) 174 ])
175
176 # AC_LANG_FUNC_LINK_TRY(C)(FUNCTION)
177 # ----------------------------------
178 # Don't include <ctype.h> because on OSF/1 3.0 it includes
179 # <sys/types.h> which includes <sys/select.h> which contains a
180 # prototype for select. Similarly for bzero.
181 #
182 # This test used to merely assign f=$1 in main(), but that was
183 # optimized away by HP unbundled cc A.05.36 for ia64 under +O3,
184 # presumably on the basis that there's no need to do that store if the
185 # program is about to exit. Conversely, the AIX linker optimizes an
186 # unused external declaration that initializes f=$1. So this test
187 # program has both an external initialization of f, and a use of f in
188 # main that affects the exit status.
189 #
190 m4_define([AC_LANG_FUNC_LINK_TRY(C)],
191 [AC_LANG_PROGRAM(
192 [/* System header to define __stub macros and hopefully few prototypes,
193 which can conflict with char $1 (); below.
194 Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
195 <limits.h> exists even on freestanding compilers. Under hpux,
196 including <limits.h> includes <sys/time.h> and causes problems
197 checking for functions defined therein. */
198 #if defined (__STDC__) && !defined (_HPUX_SOURCE)
199 # include <limits.h>
200 #else
201 # include <assert.h>
202 #endif
203 /* Override any gcc2 internal prototype to avoid an error. */
204 #ifdef __cplusplus
205 extern "C"
206 {
207 #endif
208 /* We use char because int might match the return type of a gcc2
209 builtin and then its argument prototype would still apply. */
210 char $1 ();
211 /* The GNU C library defines this for functions which it implements
212 to always fail with ENOSYS. Some functions are actually named
213 something starting with __ and the normal name is an alias. */
214 #if defined (__stub_$1) || defined (__stub___$1)
215 choke me
216 #else
217 char (*f) () = $1;
218 #endif
219 #ifdef __cplusplus
220 }
221 #endif
222 ], [return f != $1;])])
223