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toolchain/crosstool-NG: fix up ct-ng config file to saner defaults

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Peter on IRC reported some build failures for different targets.
They were of two kinds:
 - missing/unknown stack unwinding support
 - missing *_chk functions

The first is about configure not being able to automagically determine
if stack unwinding support is available for the target. The second is
about fortified build forgetting to build the fortified functions.
This applies to both glibc and eglibc.

After some discussions on IRC with Jacmet, it appears that we can
safely assume both of the following:
 - virtually all targets of buildroot will have stack unwinding support
 - we do not care about fortified builds (so far)

So, update the bundled crosstool-NG .config file to saner defaults:
 - force unwind support
 - disable fortified builds

[Peter: fix 'force non-fortified build' sed invocation]
Reported-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Yann E. MORIN 2011-05-22 00:05:42 +02:00 committed by Peter Korsgaard
parent 4943afcc91
commit 40a203f254
1 changed files with 12 additions and 0 deletions
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12
toolchain/toolchain-crosstool-ng/crosstool-ng.mk
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@ -327,6 +327,18 @@ $(CTNG_DIR)/libc.config: $(CTNG_UCLIBC_CONFIG_FILE) $(CONFIG_DIR)/.config
endif # LIBC is uClibc
#--------------
# glibc/eglibc specific options
ifeq ($(BR2_TOOLCHAIN_CTNG_glibc)$(BR2_TOOLCHAIN_CTNG_eglibc),y)
# Force unwind support
CTNG_FIX_DOT_CONFIG_SED += s:^\# (CT_LIBC_GLIBC_FORCE_UNWIND) is not set:\1=y:;
# Force non-fortified build
CTNG_FIX_DOT_CONFIG_SED += s:^(CT_LIBC_ENABLE_FORTIFIED_BUILD)=y:\# \1 is not set:;
endif # LIBC is glibc or eglibc
#--------------
# Small functions to shoe-horn the above into crosstool-NG's .config