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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-02-07 13:21:36 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-02-07 13:21:36 +0000 |
| commit | 0a0a425efe501cb03ef246ca5b7aeafd3bb8a4af (patch) | |
| tree | 6bdcb43666cef30b2f83a4a5fc6d613690298236 /gcc/aclocal.m4 | |
| parent | 8b482459308d062b5bc6a92af9313c67f5321329 (diff) | |
| download | gcc-0a0a425efe501cb03ef246ca5b7aeafd3bb8a4af.tar.gz | |
* aclocal.m4 (GCC_FUNC_PRINTF_PTR): New macro to test the printf
functions for whether they support the %p format specifier.
* acconfig.h (HOST_PTR_PRINTF): Insert stub for autoconf.
* configure.in (GCC_FUNC_PRINTF_PTR): Use it.
* configure, config.in: Rebuild.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@17760 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/aclocal.m4')
| -rw-r--r-- | gcc/aclocal.m4 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/aclocal.m4 b/gcc/aclocal.m4 index 58dcaa62d75..601af11cec0 100644 --- a/gcc/aclocal.m4 +++ b/gcc/aclocal.m4 @@ -42,6 +42,27 @@ GCC_NEED_DECLARATION($ac_func) done ]) +dnl See if the printf functions in libc support %p in format strings. +AC_DEFUN(GCC_FUNC_PRINTF_PTR, +[AC_CACHE_CHECK(whether the printf functions support %p, + gcc_cv_func_printf_ptr, +[AC_TRY_RUN([#include <stdio.h> + +main() +{ + char buf[64]; + char *p = buf, *q = NULL; + sprintf(buf, "%p", p); + sscanf(buf, "%p", &q); + exit (p != q); +}], gcc_cv_func_printf_ptr=yes, gcc_cv_func_printf_ptr=no, + gcc_cv_func_printf_ptr=no) +rm -f core core.* *.core]) +if test $gcc_cv_func_printf_ptr = yes ; then + AC_DEFINE(HOST_PTR_PRINTF, "%p") +fi +]) + dnl See if symbolic links work and if not, try to substitute either hard links or simple copy. AC_DEFUN(GCC_PROG_LN_S, [AC_MSG_CHECKING(whether ln -s works) |