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-rw-r--r--arch/powerpc/config.in11
-rw-r--r--config/libc.in7
2 files changed, 17 insertions, 1 deletions
diff --git a/arch/powerpc/config.in b/arch/powerpc/config.in
index dc871a0..6a0b910 100644
--- a/arch/powerpc/config.in
+++ b/arch/powerpc/config.in
@@ -14,4 +14,13 @@ config ARCH_POWERPC_SPE
depends on EXPERIMENTAL
default n
help
- Add support for the Signal Processing Engine.
+ Add support for the Signal Processing Engine. This will set up
+ the toolchain so that it supports the SPE ABI extensions. This
+ mainly targets Freescale e500 processors.
+
+ Setting this option will append "spe" to the end of your target
+ tuple name (e.g., powerpc-e500v2-linux-gnuspe) so that the gcc
+ configure/build system will know to include SPE ABI support.
+ It will also automatically add "-mabi=spe -mspe" to your
+ TARGET_CFLAGS, and "--enable-e500_double" to your CC_EXTRA_CONFIG,
+ so you do not need to explicitly add them.
diff --git a/config/libc.in b/config/libc.in
index e9a6ad9..a8cf28c 100644
--- a/config/libc.in
+++ b/config/libc.in
@@ -23,6 +23,13 @@ config LIBC_EGLIBC
select LIBC_SUPPORT_NPTL
select LIBC_SUPPORT_LINUXTHREADS
depends on EXPERIMENTAL
+ help
+ EGLIBC (Embedded GLIBC) is a variant of the standard GNU GLIBC
+ that is designed to work well on embedded systems. EGLIBC strives
+ to be source and binary compatible with GLIBC. Its goals include
+ a reduced footprint, configurable components, and improved
+ cross-compilation support. EGLIBC also includes some embedded ports
+ (such as e500/spe) that are normally separate add-ons of GLIBC.
if LIBC_EGLIBC
source config/libc/eglibc.in