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- # ld-output-def.m4 serial 2
- 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.
- dnl From Simon Josefsson
- # gl_LD_OUTPUT_DEF()
- # -------------
- # Check if linker supports -Wl,--output-def and define automake
- # conditional HAVE_LD_OUTPUT_DEF if it is.
- AC_DEFUN([gl_LD_OUTPUT_DEF],
- [
- AC_CACHE_CHECK([if gcc/ld supports -Wl,--output-def],
- [gl_cv_ld_output_def],
- [if test "$enable_shared" = no; then
- gl_cv_ld_output_def="not needed, shared libraries are disabled"
- else
- gl_ldflags_save=$LDFLAGS
- LDFLAGS="-Wl,--output-def,conftest.def"
- AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
- [gl_cv_ld_output_def=yes],
- [gl_cv_ld_output_def=no])
- rm -f conftest.def
- LDFLAGS="$gl_ldflags_save"
- fi])
- AM_CONDITIONAL([HAVE_LD_OUTPUT_DEF], test "x$gl_cv_ld_output_def" = "xyes")
- ])
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