diff options
Diffstat (limited to 'config/cc')
| -rw-r--r-- | config/cc/gcc.in | 22 | ||||
| -rw-r--r-- | config/cc/gcc.in.2 | 8 |
2 files changed, 30 insertions, 0 deletions
diff --git a/config/cc/gcc.in b/config/cc/gcc.in index eb69f97..3c18b8b 100644 --- a/config/cc/gcc.in +++ b/config/cc/gcc.in @@ -164,10 +164,32 @@ config CC_GCC_HAS_GRAPHITE bool default n +# The way LTO works is a bit twisted. +# See: http://gcc.gnu.org/wiki/LinkTimeOptimization#Requirements +# Basically: +# - if binutils has plugins: LTO is handled by ld/gold by loading +# the plugin when linking +# - if binutils does not have plugins: LTO is handled by collect2 +# In any case, LTO support does not depend on plugins, but takes +# advantage of it config CC_GCC_HAS_LTO bool default n +# Only enable gcc's support for plugins if binutils has it as well +# They are usefull only when doing LTO, but it does no harm enabling +# them even without LTO. +config CC_GCC_ENABLE_PLUGINS + bool + depends on BINUTILS_PLUGINS + default y + +# If binutils installs gold, enable support for gold in gcc +config CC_GCC_GOLD + bool + depends on BINUTILS_GOLD_INSTALLED + default y + config CC_GCC_USE_GMP_MPFR bool default n diff --git a/config/cc/gcc.in.2 b/config/cc/gcc.in.2 index 9e08689..642ea5b 100644 --- a/config/cc/gcc.in.2 +++ b/config/cc/gcc.in.2 @@ -24,6 +24,14 @@ config CC_GCC_USE_GRAPHITE On some systems (eg. Cygwin), PPL and/or CLooG may not build properly (yet), so you'll have to say 'N' here. +# The way LTO works is a bit twisted. +# See: http://gcc.gnu.org/wiki/LinkTimeOptimization#Requirements +# Basically: +# - if binutils has plugins: LTO is handled by ld/gold by loading +# the plugin when linking +# - if binutils does not have plugins: LTO is handled by collect2 +# In any case, LTO support does not depend on plugins, but takes +# advantage of it config CC_GCC_USE_LTO bool prompt "Enable LTO" |