Hash :
c7a6a92e
Author :
Date :
2011-10-21T00:23:34
ar-lib: new 'AM_PROG_AR' macro, triggering the 'ar-lib' script * m4/ar-lib.m4: New macro AM_PROG_AR, which locates an archiver and triggers the auxiliary 'ar-lib' script if needed. * m4/Makefile.am (dist_m4data_DATA): Update. * automake.in ($seen_ar): New variable. (scan_autoconf_traces): Set it. (handle_libraries, handle_ltlibraries): Require AM_PROG_AR for portability. * doc/automake.texi (Public Macros): Mention the new 'AM_PROG_AR' macro. (Subpackages): Add AM_PROG_AR to the example. (A Library): Adjust recommendations for AR given the new AM_PROG_AR macro. * All relevant tests: Adjust to new portability requirements due to the new AM_PROG_AR macro. * tests/ar-lib2.test: New test, checking that AM_PROG_AR triggers install of ar-lib. * tests/ar-lib3.test: New test, checking that lib_LIBRARIES requires AM_PROG_AR. * tests/ar-lib4.test: New test, checking that lib_LTLIBRARIES requires AM_PROG_AR. * tests/ar-lib5a.test: New test, checking that AM_PROG_AR triggers use of ar-lib when the archiver is Microsoft lib. * tests/ar-lib5b.test: New test, checking that AM_PROG_AR triggers use of ar-lib when the archiver is a faked lib. * tests/ar-lib6a.test: New test, checking the ordering of AM_PROG_AR and LT_INIT. * tests/ar-lib6b.test: New test, checking the ordering of AM_PROG_AR and AC_PROG_LIBTOOL. * tests/ar-lib7.test: New test, checking that automake warns if ar-lib is missing. * tests/ar3.test: New test, checking that AR and ARFLAGS may be overridden by the user even if AM_PROG_AR is used. * tests/ar4.test: New test, checking that AM_PROG_AR bails out if it cannot determine the archiver interface. * tests/ar5.test: New test, checking that AM_PROG_AR runs its optional argument if it cannot determine the archiver interface. * tests/defs.in: New required entry 'lib'. * tests/Makefile.am (TESTS): Update. * NEWS: Update. Signed-off-by: Peter Rosin <peda@lysator.liu.se>
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## -*- Autoconf -*-
# Copyright (C) 2011 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# serial 1
# AM_PROG_AR([ACT-IF-FAIL])
# -------------------------
# Try to determine the archiver interface, and trigger the ar-lib wrapper
# if it is needed. If the detection of archiver interface fails, run
# ACT-IF-FAIL (default is to abort configure with a proper error message).
AC_DEFUN([AM_PROG_AR],
[AC_BEFORE([$0], [LT_INIT])dnl
AC_BEFORE([$0], [AC_PROG_LIBTOOL])dnl
AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
AC_REQUIRE_AUX_FILE([ar-lib])dnl
AC_CHECK_TOOLS([AR], [ar lib "link -lib"], [false])
: ${AR=ar}
AC_CACHE_CHECK([the archiver ($AR) interface], [am_cv_ar_interface],
[am_cv_ar_interface=ar
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int some_variable = 0;]])],
[am_ar_try='$AR cru libconftest.a conftest.$ac_objext >&AS_MESSAGE_LOG_FD'
AC_TRY_EVAL([am_ar_try])
if test "$ac_status" -eq 0; then
am_cv_ar_interface=ar
else
am_ar_try='$AR -NOLOGO -OUT:conftest.lib conftest.$ac_objext >&AS_MESSAGE_LOG_FD'
AC_TRY_EVAL([am_ar_try])
if test "$ac_status" -eq 0; then
am_cv_ar_interface=lib
else
m4_default([$1],
[AC_MSG_ERROR([could not determine $AR interface])])
fi
fi
rm -f conftest.lib libconftest.a
])
])
case $am_cv_ar_interface in
ar)
;;
lib)
# Microsoft lib, so override with the ar-lib wrapper script.
# FIXME: It is wrong to rewrite AR.
# But if we don't then we get into trouble of one sort or another.
# A longer-term fix would be to have automake use am__AR in this case,
# and then we could set am__AR="$am_aux_dir/ar-lib \$(AR)" or something
# similar.
AR="$am_aux_dir/ar-lib $AR"
;;
esac
AC_SUBST([AR])dnl
])