86 lines
2.8 KiB
Plaintext
86 lines
2.8 KiB
Plaintext
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dnl
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dnl Copyright 2005,2008 Free Software Foundation, Inc.
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dnl
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dnl This file is part of GNU Radio
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dnl
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dnl GNU Radio is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation; either version 3, or (at your option)
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dnl any later version.
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dnl
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dnl GNU Radio is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU General Public License
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dnl along with GNU Radio; see the file COPYING. If not, write to
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dnl the Free Software Foundation, Inc., 51 Franklin Street,
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dnl Boston, MA 02110-1301, USA.
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dnl
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dnl GR_LIB64()
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dnl
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dnl Checks to see if we're on a x86_64 or powerpc64 machine, and if so, determine
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dnl if libdir should end in "64" or not.
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dnl
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dnl Sets gr_libdir_suffix to "" or "64" and calls AC_SUBST(gr_libdir_suffix)
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dnl May append "64" to libdir.
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dnl
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dnl The current heuristic is:
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dnl if the host_cpu isn't x86_64 or powerpc64, then ""
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dnl if the host_os isn't linux, then ""
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dnl if we're cross-compiling, ask the linker, by way of the selected compiler
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dnl if we're x86_64 and there's a /lib64 and it's not a symlink, then "64", else ""
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dnl else ask the compiler
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dnl
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AC_DEFUN([GR_LIB64],[
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_REQUIRE([AC_PROG_CXX])
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AC_MSG_CHECKING([gr_libdir_suffix])
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gr_libdir_suffix=""
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AC_SUBST(gr_libdir_suffix)
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case "$host_os" in
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linux*) is_linux=yes ;;
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*) is_linux=no ;;
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esac
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if test "$is_linux" = no || test "$host_cpu" != "x86_64" && test "$host_cpu" != "powerpc64"; then
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gr_libdir_suffix=""
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elif test "$cross_compiling" = yes; then
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_GR_LIB64_ASK_COMPILER
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elif test "$host_cpu" = "x86_64"; then
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if test -d /lib64 && test ! -L /lib64; then
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gr_libdir_suffix=64
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fi
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else
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_GR_LIB64_ASK_COMPILER
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fi
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AC_MSG_RESULT([$gr_libdir_suffix])
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AC_MSG_CHECKING([whether to append 64 to libdir])
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t=${libdir##*/lib}
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if test "$t" != 64 && test "$gr_libdir_suffix" = "64"; then
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libdir=${libdir}64
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AC_MSG_RESULT([yes. Setting libdir to $libdir])
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl If we're using g++, extract the first SEARCH_DIR("...") entry from the linker script
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dnl and see if it contains a suffix after the final .../lib part of the path.
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dnl (This works because the linker script varies depending on whether we're generating
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dnl 32-bit or 64-bit executables)
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dnl
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AC_DEFUN([_GR_LIB64_ASK_COMPILER],[
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if test "$ac_cv_cxx_compiler_gnu" = "yes";
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then
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gr_libdir_suffix=`$CXX -Wl,--verbose 2>/dev/null | sed -n -e '/SEARCH_DIR/{s/;.*$//; s,^.*/,,; s/".*$//; s/^lib//; p}'`
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fi
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])
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