commonlib/helpers: Add alloca() macro
If there is no alloca() macro defined, then define it as __builtin_alloca(), as most compilers support that as an intrinsic instead, if no alloca.h is included. Change-Id: I8730d57ce7c2f323b52e7a5720c598fb7af16b44 Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/36387 Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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@ -137,4 +137,8 @@
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#define __unused __attribute__((unused))
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#endif
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#ifndef alloca
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#define alloca(x) __builtin_alloca(x)
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#endif
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#endif /* COMMONLIB_HELPERS_H */
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