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| author | Simon Josefsson <simon@josefsson.org> | 2008-11-18 00:35:06 +0100 |
|---|---|---|
| committer | Simon Josefsson <simon@josefsson.org> | 2008-11-18 00:35:06 +0100 |
| commit | 35d89293222a0e8930dc2752b0e5e85e4d088800 (patch) | |
| tree | 0054123bf1ba0b0ee6ad8a568a5a1701040ae197 /m4 | |
| parent | 60859fa9e71f85af96ab0951a4d681813705b761 (diff) | |
| download | gnutls-35d89293222a0e8930dc2752b0e5e85e4d088800.tar.gz | |
Move C++ and -output-def detection.
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/output-def.m4 | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/m4/output-def.m4 b/m4/output-def.m4 new file mode 100644 index 0000000000..3fb666282c --- /dev/null +++ b/m4/output-def.m4 @@ -0,0 +1,28 @@ +# output-def.m4 serial 1 +dnl Copyright (C) 2008 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 + +# sj_OUTPUT_DEF() +# ------------- +# Check if linker supports -Wl,--output-def and define automake +# conditional HAVE_LD_OUTPUT_DEF if it is. +AC_DEFUN([sj_OUTPUT_DEF], +[ + AC_MSG_CHECKING([if gcc/ld supports -Wl,--output-def]) + if test "$enable_shared" = no; then + output_def=no + AC_MSG_RESULT([no need, since shared libraries are disabled]) + else + _gcc_ldflags_save=$LDFLAGS + LDFLAGS="-Wl,--output-def,foo.def" + AC_LINK_IFELSE(AC_LANG_PROGRAM([]),output_def=yes,output_def=no) + rm -f foo.def + AC_MSG_RESULT($output_def) + LDFLAGS="$_gcc_ldflags_save" + fi + AM_CONDITIONAL(HAVE_LD_OUTPUT_DEF, test "$output_def" = "yes") +]) |