| # ld-output-def.m4 serial 2 |
| dnl Copyright (C) 2008-2019 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") |
| ]) |
