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| author | Denys Vlasenko | 2020-12-15 18:39:05 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2020-12-15 18:39:05 +0100 |
| commit | fad8d6b6c0290e92b89cd18493c0c336f3619ee1 (patch) | |
| tree | e6f6a6af668e966399c899e3416923f3e5e3fff5 | |
| parent | 2aaacc1453e98bd24341e7dc6edd8e7fdf84e576 (diff) | |
| download | busybox-fad8d6b6c0290e92b89cd18493c0c336f3619ee1.zip busybox-fad8d6b6c0290e92b89cd18493c0c336f3619ee1.tar.gz | |
build system: combat gcc zealotry in data alignment, now for x86_64 too
function old new delta
.rodata 182928 182620 -308
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | arch/x86_64/Makefile | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile new file mode 100644 index 0000000..16576fb --- /dev/null +++ b/arch/x86_64/Makefile @@ -0,0 +1,11 @@ +# ========================================================================== +# Build system +# ========================================================================== + +# "Control how GCC aligns variables. +# Supported values for type are compat uses increased alignment value +# compatible uses GCC 4.8 and earlier, abi uses alignment value as specified by the psABI, +# and cacheline uses increased alignment value to match the cache line size. +# compat is the default." +# "abi" seems to be somewhat successful in preventing oversealous data alignment. +CFLAGS += $(call cc-option,-malign-data=abi,) |