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| author | Neil Jerram <neil@ossau.uklinux.net> | 2009-01-12 21:48:17 +0000 |
|---|---|---|
| committer | Neil Jerram <neil@ossau.uklinux.net> | 2009-01-12 22:08:56 +0000 |
| commit | 4a462e35440fdc3f10b0f88b3fb737fa76ed146d (patch) | |
| tree | f061bae888c82f95e32a03add76c21bfe927e896 /m4/extensions.m4 | |
| parent | dc686d7b0a1490e26482e018489dec040b79b952 (diff) | |
| download | guile-4a462e35440fdc3f10b0f88b3fb737fa76ed146d.tar.gz | |
Make sure that we have a real on-the-stack alloca()
Because of how Guile saves and restores continuations (by copying the
stack), and how it uses alloca to create space for debug information
on the stack, we must have an alloca() that really does use the stack,
and not one that uses the heap.
To do this, we use the Gnulib "alloca-opt" module instead of "alloca".
This commit also updates the Gnulib sources from the current Gnulib
Git repository.
Diffstat (limited to 'm4/extensions.m4')
| -rw-r--r-- | m4/extensions.m4 | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/m4/extensions.m4 b/m4/extensions.m4 index 917af9480..611fcfdbc 100644 --- a/m4/extensions.m4 +++ b/m4/extensions.m4 @@ -1,4 +1,4 @@ -# serial 5 -*- Autoconf -*- +# serial 6 -*- Autoconf -*- # Enable extensions on systems that normally disable them. # Copyright (C) 2003, 2006-2008 Free Software Foundation, Inc. @@ -24,6 +24,8 @@ AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS], [AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl AC_BEFORE([$0], [AC_RUN_IFELSE])dnl + AC_REQUIRE([AC_CANONICAL_HOST]) + AC_CHECK_HEADER([minix/config.h], [MINIX=yes], [MINIX=]) if test "$MINIX" = yes; then AC_DEFINE([_POSIX_SOURCE], [1], @@ -36,6 +38,16 @@ AC_BEFORE([$0], [AC_RUN_IFELSE])dnl [Define to 1 if on MINIX.]) fi + dnl HP-UX 11.11 defines mbstate_t only if _XOPEN_SOURCE is defined to 500, + dnl regardless of whether the flags -Ae or _D_HPUX_SOURCE=1 are already + dnl provided. + case "$host_os" in + hpux*) + AC_DEFINE([_XOPEN_SOURCE], [500], + [Define to 500 only on HP-UX.]) + ;; + esac + AH_VERBATIM([__EXTENSIONS__], [/* Enable extensions on AIX 3, Interix. */ #ifndef _ALL_SOURCE |