Mercurial > gnulib
view m4/multiarch.m4 @ 17363:5a51fb7777a9
sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin
Problem reported by Marco Atzeri in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>.
* lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]:
Simply delegate to the system <sys/select.h> in this case too.
Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only
if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to
be needed on Solaris either.
* lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]:
Simply delgate to the system <sys/time.h> in this case.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Tue, 19 Mar 2013 09:08:47 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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# multiarch.m4 serial 7 dnl Copyright (C) 2008-2013 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Determine whether the compiler is or may be producing universal binaries. # # On Mac OS X 10.5 and later systems, the user can create libraries and # executables that work on multiple system types--known as "fat" or # "universal" binaries--by specifying multiple '-arch' options to the # compiler but only a single '-arch' option to the preprocessor. Like # this: # # ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ # CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ # CPP="gcc -E" CXXCPP="g++ -E" # # Detect this situation and set APPLE_UNIVERSAL_BUILD accordingly. AC_DEFUN_ONCE([gl_MULTIARCH], [ dnl Code similar to autoconf-2.63 AC_C_BIGENDIAN. gl_cv_c_multiarch=no AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#ifndef __APPLE_CC__ not a universal capable compiler #endif typedef int dummy; ]])], [ dnl Check for potential -arch flags. It is not universal unless dnl there are at least two -arch flags with different values. arch= prev= for word in ${CC} ${CFLAGS} ${CPPFLAGS} ${LDFLAGS}; do if test -n "$prev"; then case $word in i?86 | x86_64 | ppc | ppc64) if test -z "$arch" || test "$arch" = "$word"; then arch="$word" else gl_cv_c_multiarch=yes fi ;; esac prev= else if test "x$word" = "x-arch"; then prev=arch fi fi done ]) if test $gl_cv_c_multiarch = yes; then APPLE_UNIVERSAL_BUILD=1 else APPLE_UNIVERSAL_BUILD=0 fi AC_SUBST([APPLE_UNIVERSAL_BUILD]) ])