1# Copyright (C) 1993-2022 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
18ifeq ($(subdir),db2)
19CPPFLAGS += -DHAVE_SPINLOCKS=1 -DHAVE_ASSEM_ALPHA=1
20endif
21
22ifeq ($(subdir),debug)
23# Consider making this GCC's default...
24CFLAGS-backtrace.c = -fasynchronous-unwind-tables
25endif
26
27ifeq ($(subdir),gmon)
28sysdep_routines += _mcount
29endif
30
31ifeq ($(subdir),gnulib)
32sysdep_routines += divl divlu divq divqu reml remlu remq remqu
33endif
34
35ifeq ($(subdir),string)
36sysdep_routines += stxcpy stxncpy
37endif
38
39ifeq ($(subdir),elf)
40# The ld.so startup code cannot use literals until it self-relocates.
41CFLAGS-rtld.c = -mbuild-constants
42endif
43
44ifeq ($(subdir),math)
45# The fma routines rely on inexact being raised for correct results.
46CFLAGS-s_fma.c = -mieee-with-inexact
47CFLAGS-s_fmaf.c = -mieee-with-inexact
48# This test tries to check for inexact being raised by arithmetic.
49CFLAGS-test-misc.c += -mieee-with-inexact
50# Avoid "conflicting types for built-in function" warnings
51CFLAGS-s_isnan.c += -fno-builtin-isnanf
52endif
53
54# Build everything with full IEEE math support, and with dynamic rounding;
55# there are a number of math routines that are defined to work with the
56# "current" rounding mode, and it's easiest to set this with all of them.
57sysdep-CFLAGS += -mieee -mfp-rounding-mode=d
58
59#  Software floating-point emulation.
60
61ifeq ($(subdir),soft-fp)
62sysdep_routines += ots_add ots_sub ots_mul ots_div ots_cmp ots_cmpe	\
63	ots_cvtxq ots_cvtqx ots_cvtqux ots_cvttx ots_cvtxt ots_nintxq	\
64	fraiseexcpt
65endif
66
67ifeq ($(subdir),math)
68CPPFLAGS += -I../soft-fp
69endif
70