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Diffstat (limited to 'm4/lib-ignore.m4')
| -rw-r--r-- | m4/lib-ignore.m4 | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/m4/lib-ignore.m4 b/m4/lib-ignore.m4 deleted file mode 100644 index 7baa5283..00000000 --- a/m4/lib-ignore.m4 +++ /dev/null @@ -1,115 +0,0 @@ -# If possible, ignore libraries that are not depended on. - -dnl Copyright (C) 2006, 2009-2014 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. - -# gl_IGNORE_UNUSED_LIBRARIES -# -------------------------- -# Determines the option to be passed to the C/C++/Fortran compiler, so that it -# omits unused libraries. -# Example (on Solaris): -# $ cc foo.c -lnsl; ldd ./a.out -# libnsl.so.1 => /lib/libnsl.so.1 -# libc.so.1 => /lib/libc.so.1 -# libmp.so.2 => /lib/libmp.so.2 -# libmd.so.1 => /lib/libmd.so.1 -# libscf.so.1 => /lib/libscf.so.1 -# libdoor.so.1 => /lib/libdoor.so.1 -# libuutil.so.1 => /lib/libuutil.so.1 -# libgen.so.1 => /lib/libgen.so.1 -# libm.so.2 => /lib/libm.so.2 -# $ cc foo.c -lnsl -Wl,-z,ignore; ldd ./a.out -# libc.so.1 => /lib/libc.so.1 -# libm.so.2 => /lib/libm.so.2 -# -# Note that the option works only for the C compiler, not for the C++ -# compiler: -# - Sun C likes '-Wl,-z,ignore'. -# '-Qoption ld -z,ignore' is not accepted. -# '-z ignore' is accepted but has no effect. -# - Sun C++ and Sun Fortran like '-Qoption ld -z,ignore'. -# '-Wl,-z,ignore' is not accepted. -# '-z ignore' is accepted but has no effect. -# -# Sets and substitutes a variable that depends on the current language: -# - IGNORE_UNUSED_LIBRARIES_CFLAGS for C -# - IGNORE_UNUSED_LIBRARIES_CXXFLAGS for C++ -# - IGNORE_UNUSED_LIBRARIES_FFLAGS for Fortran -# -# Note that the option works only for direct invocation of the compiler, not -# through libtool: When libtool is used to create a shared library, it will -# honor and translate '-Wl,-z,ignore' to '-Qoption ld -z -Qoption ld ignore' -# if needed, but it will drop a '-Qoption ld -z,ignore' on the command line. -# -AC_DEFUN([gl_IGNORE_UNUSED_LIBRARIES], -[ - AC_CACHE_CHECK([for []_AC_LANG[] compiler flag to ignore unused libraries], - [gl_cv_prog_[]_AC_LANG_ABBREV[]_ignore_unused_libraries], - [gl_cv_prog_[]_AC_LANG_ABBREV[]_ignore_unused_libraries=none - gl_saved_ldflags=$LDFLAGS - gl_saved_libs=$LIBS - # Link with -lm to detect binutils 2.16 bug with --as-needed; see - # <http://lists.gnu.org/archive/html/bug-gnulib/2006-06/msg00131.html>. - LIBS="$LIBS -lm" - # Use long option sequences like '-z ignore' to test for the feature, - # to forestall problems with linkers that have -z, -i, -g, -n, etc. flags. - # GCC + binutils likes '-Wl,--as-needed'. - # GCC + Solaris ld likes '-Wl,-z,ignore'. - # Sun C likes '-Wl,-z,ignore'. '-z ignore' is accepted but has no effect. - # Don't try bare '--as-needed'; nothing likes it and the HP-UX 11.11 - # native cc issues annoying warnings and then ignores it, - # which would cause us to incorrectly conclude that it worked. - for gl_flags in _gl_IGNORE_UNUSED_LIBRARIES_OPTIONS - do - LDFLAGS="$gl_flags $LDFLAGS" - AC_LINK_IFELSE([AC_LANG_PROGRAM()], - [gl_cv_prog_[]_AC_LANG_ABBREV[]_ignore_unused_libraries=$gl_flags]) - LDFLAGS=$gl_saved_ldflags - test "$gl_cv_prog_[]_AC_LANG_ABBREV[]_ignore_unused_libraries" != none && - break - done - LIBS=$gl_saved_libs - ]) - IGNORE_UNUSED_LIBRARIES_[]_AC_LANG_PREFIX[]FLAGS= - if test "$gl_cv_prog_[]_AC_LANG_ABBREV[]_ignore_unused_libraries" != none; then - IGNORE_UNUSED_LIBRARIES_[]_AC_LANG_PREFIX[]FLAGS="$gl_cv_prog_[]_AC_LANG_ABBREV[]_ignore_unused_libraries" - fi - AC_SUBST([IGNORE_UNUSED_LIBRARIES_]_AC_LANG_PREFIX[FLAGS]) -]) - -# _gl_IGNORE_UNUSED_LIBRARIES_OPTIONS -# ----------------------------------- -# Expands to the language dependent options to be tried. -AC_DEFUN([_gl_IGNORE_UNUSED_LIBRARIES_OPTIONS], -[_AC_LANG_DISPATCH([$0], _AC_LANG, $@)]) - -# _gl_IGNORE_UNUSED_LIBRARIES_OPTIONS(C) -# -------------------------------------- -m4_define([_gl_IGNORE_UNUSED_LIBRARIES_OPTIONS(C)], -[ '-Wl,--as-needed' \ - '-Wl,-z,ignore' \ - '-z ignore' -]) - -# _gl_IGNORE_UNUSED_LIBRARIES_OPTIONS(C++) -# ---------------------------------------- -m4_define([_gl_IGNORE_UNUSED_LIBRARIES_OPTIONS(C++)], -[ '-Wl,--as-needed' \ - '-Qoption ld -z,ignore' \ - '-Wl,-z,ignore' \ - '-z ignore' -]) - -# _gl_IGNORE_UNUSED_LIBRARIES_OPTIONS(Fortran 77) -# ----------------------------------------------- -m4_copy([_gl_IGNORE_UNUSED_LIBRARIES_OPTIONS(C++)], - [_gl_IGNORE_UNUSED_LIBRARIES_OPTIONS(Fortran 77)]) - -# _gl_IGNORE_UNUSED_LIBRARIES_OPTIONS(Fortran) -# -------------------------------------------- -m4_copy([_gl_IGNORE_UNUSED_LIBRARIES_OPTIONS(Fortran 77)], - [_gl_IGNORE_UNUSED_LIBRARIES_OPTIONS(Fortran)]) |