| # build.kconf - Intel build-related configuration options |
| |
| # |
| # Copyright (c) 2013-2014 Wind River Systems, Inc. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # |
| # 1) Redistributions of source code must retain the above copyright notice, |
| # this list of conditions and the following disclaimer. |
| # |
| # 2) Redistributions in binary form must reproduce the above copyright notice, |
| # this list of conditions and the following disclaimer in the documentation |
| # and/or other materials provided with the distribution. |
| # |
| # 3) Neither the name of Wind River Systems nor the names of its contributors |
| # may be used to endorse or promote products derived from this software without |
| # specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| # |
| # compile and link features |
| # |
| |
| menu "Compilation & Linkage Options" |
| |
| source "build-base.kconf" |
| |
| config SSE_FP_MATH |
| bool |
| prompt "Compiler-generated SSEx instructions" if FP_SHARING |
| depends on SSE && ISA_IA32 |
| default n if FP_SHARING |
| default y if !FP_SHARING |
| help |
| This option allows the compiler to generate SSEx instructions for |
| performing floating point math. This can greatly improve performance |
| when exactly the same operations are to be performed on multiple |
| data objects; however, it can also significantly reduce performance |
| when pre-emptive task switches occur because of the larger register |
| set that must be saved and restored. |
| |
| Disabling this option means that the compiler utilizes only the |
| x87 instruction set for floating point operations. |
| |
| endmenu |
