| # Copyright (C) 1993-2018 Free Software Foundation, Inc. |
| # This file is part of the GNU C Library. |
| # Contributed by Brendan Kehoe (brendan@zen.org). |
| |
| # The GNU C Library is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU Lesser General Public |
| # License as published by the Free Software Foundation; either |
| # version 2.1 of the License, or (at your option) any later version. |
| |
| # The GNU C Library 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 |
| # Lesser General Public License for more details. |
| |
| # You should have received a copy of the GNU Lesser General Public |
| # License along with the GNU C Library. If not, see |
| # <http://www.gnu.org/licenses/>. |
| |
| ifeq ($(subdir),db2) |
| CPPFLAGS += -DHAVE_SPINLOCKS=1 -DHAVE_ASSEM_ALPHA=1 |
| endif |
| |
| ifeq ($(subdir),debug) |
| # Consider making this GCC's default... |
| CFLAGS-backtrace.c = -fasynchronous-unwind-tables |
| endif |
| |
| ifeq ($(subdir),gmon) |
| sysdep_routines += _mcount |
| endif |
| |
| ifeq ($(subdir),gnulib) |
| sysdep_routines += divl divlu divq divqu reml remlu remq remqu |
| endif |
| |
| ifeq ($(subdir),string) |
| sysdep_routines += stxcpy stxncpy |
| endif |
| |
| ifeq ($(subdir),elf) |
| # The ld.so startup code cannot use literals until it self-relocates. |
| CFLAGS-rtld.c = -mbuild-constants |
| endif |
| |
| ifeq ($(subdir),math) |
| # The fma routines rely on inexact being raised for correct results. |
| CFLAGS-s_fma.c = -mieee-with-inexact |
| CFLAGS-s_fmaf.c = -mieee-with-inexact |
| # This test tries to check for inexact being raised by arithmetic. |
| CFLAGS-test-misc.c += -mieee-with-inexact |
| # Avoid "conflicting types for built-in function" warnings |
| CFLAGS-s_isnan.c += -fno-builtin-isnanf |
| endif |
| |
| # Build everything with full IEEE math support, and with dynamic rounding; |
| # there are a number of math routines that are defined to work with the |
| # "current" rounding mode, and it's easiest to set this with all of them. |
| sysdep-CFLAGS += -mieee -mfp-rounding-mode=d |
| |
| # libc.so requires about 16k for the small data area, which is well |
| # below the 64k maximum. |
| pic-ccflag = -fpic |