diff options
Diffstat (limited to '')
| -rw-r--r-- | configure.ac | 10 | ||||
| -rw-r--r-- | m4/ax_append_link_flags.m4 | 61 |
2 files changed, 71 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 351356282..3c3add129 100644 --- a/configure.ac +++ b/configure.ac @@ -1485,6 +1485,16 @@ dnl --------------------------------------------------------------------------- dnl ---------------------------------- debug ---------------------------------- if test "x$enable_debug" = xno; then AM_CPPFLAGS="$AM_CPPFLAGS -DNDEBUG" + + AX_APPEND_COMPILE_FLAGS([-ffunction-sections]) + AX_APPEND_COMPILE_FLAGS([-fdata-sections]) + + AC_LANG_PUSH([C++]) + AX_APPEND_COMPILE_FLAGS([-ffunction-sections]) + AX_APPEND_COMPILE_FLAGS([-fdata-sections]) + AC_LANG_POP + + AX_APPEND_LINK_FLAGS([-Wl,--gc-sections]) fi dnl ----------------------------------- GCC ----------------------------------- diff --git a/m4/ax_append_link_flags.m4 b/m4/ax_append_link_flags.m4 new file mode 100644 index 000000000..4fc433700 --- /dev/null +++ b/m4/ax_append_link_flags.m4 @@ -0,0 +1,61 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS]) +# +# DESCRIPTION +# +# For every FLAG1, FLAG2 it is checked whether the linker works with the +# flag. If it does, the flag is added FLAGS-VARIABLE +# +# If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is +# used. During the check the flag is always added to the linker's flags. +# +# If EXTRA-FLAGS is defined, it is added to the linker's default flags +# when the check is done. The check is thus made with the flags: "LDFLAGS +# EXTRA-FLAGS FLAG". This can for example be used to force the linker to +# issue an error when a bad flag is given. +# +# NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG. +# Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS. +# +# LICENSE +# +# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> +# +# This program is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation, either version 3 of the License, or (at your +# option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +# Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program. If not, see <http://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 2 + +AC_DEFUN([AX_APPEND_LINK_FLAGS], +[for flag in $1; do + AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3]) +done +])dnl AX_APPEND_LINK_FLAGS |