Hi,
Currently -mcpu=cortex-m33+nodsp gets assigned the thumb multilib due to
lack of mapping from -mcpu=cortex-m33+nodsp to an -march option. This
leads to link failures for linking Armv4T Thumb code from the multilib
with Armv8-M Mainline code from the code being compiled.
This patch adds the appropriate mapping.
ChangeLog entry is as follows:
*** gcc/ChangeLog.arm ***
2018-03-14 Thomas Preud'homme <thomas.preudho...@arm.com>
* config/arm/t-rmprofile: Add mapping from -mcpu=cortex-m33+nodsp to
-march=armv8-m.main.
Testing: A hello world fails to link without the patch with a multilib
build but succeeds with the patch.
We've decided to apply this patch to the ARM/embedded-7-branch branch.
Best regards,
Thomas
diff --git a/gcc/config/arm/t-rmprofile b/gcc/config/arm/t-rmprofile
index a3a24d59fb29b42a36177bd2d2ebfae4e50e5a10..54411795215b8aff90ba9cfb806ec7b33db4caea 100644
--- a/gcc/config/arm/t-rmprofile
+++ b/gcc/config/arm/t-rmprofile
@@ -102,6 +102,7 @@ MULTILIB_MATCHES += march?armv7e-m=mcpu?cortex-m4
MULTILIB_MATCHES += march?armv7e-m=mcpu?cortex-m7
MULTILIB_MATCHES += march?armv8-m.base=mcpu?cortex-m23
MULTILIB_MATCHES += march?armv8-m.main=mcpu?cortex-m33
+MULTILIB_MATCHES += march?armv8-m.main=mcpu?cortex-m33+nodsp
MULTILIB_MATCHES += march?armv7=mcpu?cortex-r4
MULTILIB_MATCHES += march?armv7=mcpu?cortex-r4f
MULTILIB_MATCHES += march?armv7=mcpu?cortex-r5
