* [crosstool-ng/crosstool-ng] de0d1d: Resepct CT_TARGET_{C,LD}FLAGS when building musl
@ 2019-12-23 22:58 Alexey Neyman
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From: Alexey Neyman @ 2019-12-23 22:58 UTC (permalink / raw)
To: crossgcc
Branch: refs/heads/master
Home: https://github.com/crosstool-ng/crosstool-ng
Commit: de0d1dbe023c3df09efbdaf6786c9c30e985ccfb
https://github.com/crosstool-ng/crosstool-ng/commit/de0d1dbe023c3df09efbdaf6786c9c30e985ccfb
Author: Dima Krasner <dima@dimakrasner.com>
Date: 2019-12-04 (Wed, 04 Dec 2019)
Changed paths:
M scripts/build/libc/musl.sh
Log Message:
-----------
Resepct CT_TARGET_{C,LD}FLAGS when building musl
I was trying to build static binaries for a range of Broadcom soft-float ARMv7
SoCs and kept getting SIGILL, although I was targeting Cortex A7 (and A5,
later), even on A9 and A15.
I found out that once I add -msoft-float, +mp+sec is to blame:
Attribute Section: aeabi
File Attributes
- Tag_CPU_name: "7VE"
+ Tag_CPU_name: "7"
Tag_CPU_arch: v7
- Tag_CPU_arch_profile: Application
- Tag_ARM_ISA_use: Yes
Tag_THUMB_ISA_use: Thumb-2
Tag_ABI_PCS_wchar_t: 4
Tag_ABI_FP_rounding: Needed
@@ -12,8 +10,5 @@ File Attributes
Tag_ABI_FP_number_model: IEEE 754
Tag_ABI_align_needed: 8-byte
Tag_ABI_enum_size: int
Tag_ABI_optimization_goals: Aggressive Size
Tag_CPU_unaligned_access: v6
- Tag_MPextension_use: Allowed
- Tag_DIV_use: Allowed in v7-A with integer division extension
- Tag_Virtualization_use: TrustZone and Virtualization Extensions
(This is the readelf -A diff, before and after armv7-a+nofp -> armv7+nofp).
I kept getting SIGILL even after building my application with a toolchain built
with the correct CFLAGS and found out that crosstool-ng doesn't pass the host
CFLAGS when building musl, which pollutes my binary with these ARMv7 extensions.
Signed-off-by: Dima Krasner <dima@dimakrasner.com>
Commit: e0a63b85460876325154305b472459a9231384aa
https://github.com/crosstool-ng/crosstool-ng/commit/e0a63b85460876325154305b472459a9231384aa
Author: Alexey Neyman <stilor@att.net>
Date: 2019-12-23 (Mon, 23 Dec 2019)
Changed paths:
M scripts/build/libc/musl.sh
Log Message:
-----------
Merge pull request #1280 from dimkr/musl-cflags
Resepct CT_TARGET_{C,LD}FLAGS when building musl
Compare: https://github.com/crosstool-ng/crosstool-ng/compare/f8864925304e...e0a63b854608
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