1# Copyright (C) 2000-2021 Free Software Foundation, Inc.
2# This file is part of the GNU C Library.
3
4# The GNU C Library is free software; you can redistribute it and/or
5# modify it under the terms of the GNU Lesser General Public
6# License as published by the Free Software Foundation; either
7# version 2.1 of the License, or (at your option) any later version.
8
9# The GNU C Library is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY; without even the implied warranty of
11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12# Lesser General Public License for more details.
13
14# You should have received a copy of the GNU Lesser General Public
15# License along with the GNU C Library.  If not, see
16# <https://www.gnu.org/licenses/>.
17
18# We used to need this since the build process uses ld -r.  Now we use
19# ld -r --unique=.text* which does more or less the same thing, but better.
20# CFLAGS-.os += -ffunction-sections
21LDFLAGS-c_pic.os += -Wl,--unique=.text*
22
23ifeq ($(subdir),elf)
24CFLAGS-rtld.c += -mdisable-fpregs
25sysdep-dl-routines += dl-symaddr dl-fptr
26# dl-fptr.c needs a complete rewrite to fix ISO C aliasing violations.
27CFLAGS-dl-fptr.c = -Wno-error
28endif
29
30ifeq ($(subdir),csu)
31ifeq (yes,$(build-shared))
32# Compatibility
33ifeq (yes,$(have-protected))
34CPPFLAGS-libgcc-compat.c = -DHAVE_DOT_HIDDEN
35endif
36sysdep_routines += libgcc-compat
37shared-only-routines += libgcc-compat
38endif
39endif
40
41# We implement a 64-bit `long double'. The standard says we can do this.
42# This means our `long double' and `double' are identical.
43long-double-fcts = no
44