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| author | Claudio Scordino <claudio@evidence.eu.com> | 2009-10-30 12:06:05 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-11-02 17:59:45 +0100 |
| commit | 6603a4fd5195a004dec5f9568e38ff76bae630c1 (patch) | |
| tree | a623de325bbe8e4ba024daee6bc8263f6da69180 /arch/arm/kernel/unwind.c | |
| parent | ARM: 5774/1: Fix Realview ARM1176PB board reboot (diff) | |
| download | linux-6603a4fd5195a004dec5f9568e38ff76bae630c1.tar.xz linux-6603a4fd5195a004dec5f9568e38ff76bae630c1.zip | |
ARM: 5776/1: Check compiler version and EABI support when adding ARM unwind support.
ARM unwind is known to compile only with EABI and not-buggy compilers.
The problem is not the unwinding information but the -fno-frame-pointer
option added as a result of !CONFIG_FRAME_POINTER. Now we check the
compiler and raise a #warning in case of wrong compiler.
Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/unwind.c')
| -rw-r--r-- | arch/arm/kernel/unwind.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c index 39baf1128bfa..786ac2b6914a 100644 --- a/arch/arm/kernel/unwind.c +++ b/arch/arm/kernel/unwind.c @@ -26,6 +26,15 @@ * http://infocenter.arm.com/help/topic/com.arm.doc.subset.swdev.abi/index.html */ +#if !defined (__ARM_EABI__) +#warning Your compiler does not have EABI support. +#warning ARM unwind is known to compile only with EABI compilers. +#warning Change compiler or disable ARM_UNWIND option. +#elif (__GNUC__ == 4 && __GNUC_MINOR__ <= 2) +#warning Your compiler is too buggy; it is known to not compile ARM unwind support. +#warning Change compiler or disable ARM_UNWIND option. +#endif + #include <linux/kernel.h> #include <linux/init.h> #include <linux/module.h> |