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      1  1.1  riastrad # ld-output-def.m4 serial 2
      2  1.1  riastrad dnl Copyright (C) 2008-2013 Free Software Foundation, Inc.
      3  1.1  riastrad dnl This file is free software; the Free Software Foundation
      4  1.1  riastrad dnl gives unlimited permission to copy and/or distribute it,
      5  1.1  riastrad dnl with or without modifications, as long as this notice is preserved.
      6  1.1  riastrad 
      7  1.1  riastrad dnl From Simon Josefsson
      8  1.1  riastrad 
      9  1.1  riastrad # gl_LD_OUTPUT_DEF()
     10  1.1  riastrad # -------------
     11  1.1  riastrad # Check if linker supports -Wl,--output-def and define automake
     12  1.1  riastrad # conditional HAVE_LD_OUTPUT_DEF if it is.
     13  1.1  riastrad AC_DEFUN([gl_LD_OUTPUT_DEF],
     14  1.1  riastrad [
     15  1.1  riastrad   AC_CACHE_CHECK([if gcc/ld supports -Wl,--output-def],
     16  1.1  riastrad     [gl_cv_ld_output_def],
     17  1.1  riastrad     [if test "$enable_shared" = no; then
     18  1.1  riastrad        gl_cv_ld_output_def="not needed, shared libraries are disabled"
     19  1.1  riastrad      else
     20  1.1  riastrad        gl_ldflags_save=$LDFLAGS
     21  1.1  riastrad        LDFLAGS="-Wl,--output-def,conftest.def"
     22  1.1  riastrad        AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
     23  1.1  riastrad                    [gl_cv_ld_output_def=yes],
     24  1.1  riastrad                    [gl_cv_ld_output_def=no])
     25  1.1  riastrad        rm -f conftest.def
     26  1.1  riastrad        LDFLAGS="$gl_ldflags_save"
     27  1.1  riastrad      fi])
     28  1.1  riastrad   AM_CONDITIONAL([HAVE_LD_OUTPUT_DEF], test "x$gl_cv_ld_output_def" = "xyes")
     29  1.1  riastrad ])
     30