mirror of
git://git.sv.gnu.org/coreutils.git
synced 2026-04-20 10:51:48 +02:00
29 lines
1.1 KiB
Plaintext
29 lines
1.1 KiB
Plaintext
# If possible, ignore libraries that are not depended on.
|
|
|
|
dnl Copyright (C) 2006 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.
|
|
|
|
dnl Written by Paul Eggert.
|
|
|
|
AC_DEFUN([gl_IGNORE_UNUSED_LIBRARIES],
|
|
[
|
|
AC_CACHE_CHECK([for flag to ignore unused libraries],
|
|
[gl_cv_ignore_unused_libraries],
|
|
[gl_cv_ignore_unused_libraries=none
|
|
gl_saved_ldflags=$LDFLAGS
|
|
# Use long option sequences like '-z ignore' to test for the feature,
|
|
# to forestall problems with linkers that have -z, -i, -g, -n, etc. flags.
|
|
for gl_flags in '-Wl,-z,ignore' '-z ignore'; do
|
|
LDFLAGS="$gl_flags $LDFLAGS"
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM()],
|
|
[gl_cv_ignore_unused_libraries=$gl_flags])
|
|
LDFLAGS=$gl_saved_ldflags
|
|
test "$gl_cv_ignore_unused_libraries" != none && break
|
|
done])
|
|
|
|
test "$gl_cv_ignore_unused_libraries" != none &&
|
|
LDFLAGS="$LDFLAGS $gl_cv_ignore_unused_libraries"
|
|
])
|