diff options
| author | Andrey Yurovsky <yurovsky@gmail.com> | 2017-08-01 16:43:00 -0700 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2017-08-02 21:16:45 +0200 |
| commit | d16b6bf9b9da2d58955bf1abaf15f25c5666b90a (patch) | |
| tree | af91ea421cfe662ad8666611b46e44446db68c76 /package/gcc | |
| parent | d64d1216968e5a99c0baccef06e98f7c982cb60b (diff) | |
| download | buildroot-d16b6bf9b9da2d58955bf1abaf15f25c5666b90a.tar.gz buildroot-d16b6bf9b9da2d58955bf1abaf15f25c5666b90a.zip | |
gcc: support grahite only for GCC 5 or above
GCC 4.9.x requires an old version of ISL to support graphite, and this
old version of ISL is not sufficient to support graphite in modern GCC
versions.
Since GCC 4.9.x is getting older, and to keep things simple, we stop
supporting graphite on old GCC < 5.x. This way, we will be able to
bump ISL to a version that is suitable for modern GCC versions.
In addition, this allows to drop the dependency on cloog, which was
only needed for GCC 4.9.
Signed-off-by: Andrey Yurovsky <yurovsky@gmail.com>
[Thomas: rework commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'package/gcc')
| -rw-r--r-- | package/gcc/Config.in.host | 4 | ||||
| -rw-r--r-- | package/gcc/gcc.mk | 9 |
2 files changed, 7 insertions, 6 deletions
diff --git a/package/gcc/Config.in.host b/package/gcc/Config.in.host index 768dc176ae..a2e02d7aed 100644 --- a/package/gcc/Config.in.host +++ b/package/gcc/Config.in.host @@ -159,6 +159,10 @@ config BR2_GCC_ENABLE_LIBMUDFLAP config BR2_GCC_ENABLE_GRAPHITE bool "Enable graphite support" + depends on BR2_TOOLCHAIN_GCC_AT_LEAST_5 help This option enables the graphite optimizations in the compiler. + +comment "graphite support needs gcc >= 5.x" + depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_5 diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk index 67d3343efe..6ee840e3b9 100644 --- a/package/gcc/gcc.mk +++ b/package/gcc/gcc.mk @@ -173,15 +173,12 @@ else HOST_GCC_COMMON_CONF_OPTS += --enable-threads endif +# gcc 5 doesn't need cloog any more, see +# https://gcc.gnu.org/gcc-5/changes.html and we don't support graphite +# on GCC 4.9.x, so only isl is needed. ifeq ($(BR2_GCC_ENABLE_GRAPHITE),y) HOST_GCC_COMMON_DEPENDENCIES += host-isl HOST_GCC_COMMON_CONF_OPTS += --with-isl=$(HOST_DIR) -# gcc 5 doesn't need cloog any more, see -# https://gcc.gnu.org/gcc-5/changes.html -ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_5),) -HOST_GCC_COMMON_DEPENDENCIES += host-cloog -HOST_GCC_COMMON_CONF_OPTS += --with-cloog=$(HOST_DIR) -endif else HOST_GCC_COMMON_CONF_OPTS += --without-isl --without-cloog endif |
