diff options
Diffstat (limited to 'config/cc/gcc.in.2')
| -rw-r--r-- | config/cc/gcc.in.2 | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/config/cc/gcc.in.2 b/config/cc/gcc.in.2 index aad488b4..6c99f201 100644 --- a/config/cc/gcc.in.2 +++ b/config/cc/gcc.in.2 @@ -96,8 +96,22 @@ config CC_GCC_SYSTEM_ZLIB comment "Optimisation features" # Defined in config/cc/gcc.in +# For graphite: gcc needs cloog and isl +# In >= gcc-5.x, cloog is no longer needed, but isl is. +# Prompt in config/cc/gcc.in.2 config CC_GCC_USE_GRAPHITE - prompt "Enable GRAPHITE loop optimisations" + bool "Enable GRAPHITE loop optimisations" + default y + select CLOOG_NEEDED if !CC_GCC_5_or_later + select ISL_NEEDED + help + Enable the GRAPHITE loop optimsations. + + On some systems (eg. Cygwin), CLooG and ISL (required to enable + GRAPHITE) may not build properly (yet), so you'll have to say 'N' + here (or help debug the issues) + + TODO: Is this still true on Cygwin? # The way LTO works is a bit twisted. # See: http://gcc.gnu.org/wiki/LinkTimeOptimization#Requirements @@ -107,11 +121,11 @@ config CC_GCC_USE_GRAPHITE # - 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 -# Also, only the 4.5 series needs libelf for LTO; 4.6 has dropped -# the dependency. -# Defined in config/cc/gcc.in config CC_GCC_USE_LTO - prompt "Enable LTO" + bool "Enable LTO" + default y + help + Enable the Link Time Optimisations. #----------------------------------------------------------------------------- comment "Settings for libraries running on target" @@ -258,7 +272,6 @@ config CC_GCC_LDBL_128 config CC_GCC_BUILD_ID bool prompt "Enable build-id" - depends on CC_GCC_HAS_BUILD_ID help Tells GCC to pass --build-id option to the linker for all final links (links performed without the -r or --relocatable option), @@ -271,7 +284,6 @@ config CC_GCC_BUILD_ID choice CC_GCC_LNK_HASH_STYLE_CHOICE bool prompt "linker hash style" - depends on CC_GCC_HAS_LNK_HASH_STYLE depends on BINUTILS_HAS_HASH_STYLE config CC_GCC_LNK_HASH_STYLE_DEFAULT |