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[ATfE] Fail with an error message when -frwpi is used. #428

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Merged
statham-arm merged 1 commit into from
Jul 18, 2025
Merged

[ATfE] Fail with an error message when -frwpi is used. #428

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9 changes: 9 additions & 0 deletions arm-software/embedded/arm-multilib/multilib.yaml.in
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,15 @@ Groups:
Variants:
@multilib_yaml_content@

# Append an error case to the Variants list, matching anything that
# enables the RWPI option. We don't build any library variants using
# the RWPI style of access to writable static data, so if a user
# compiles with -frwpi, we don't have any compatible library.
- Error: Arm Toolchain for Embedded does not provide RWPI library variants
Flags:
- -frwpi
Group: stdlibs

Mappings:

# Map higher architecture versions to subsets of them, so that a
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8 changes: 8 additions & 0 deletions arm-software/embedded/test/multilib/rwpi.test
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@@ -0,0 +1,8 @@
# RUN: %clang -print-multi-directory --target=arm-none-eabi -march=armv7a 2>%t | FileCheck --check-prefix=NORWPI --allow-empty %s
# NORWPI: arm-none-eabi/armv7a_soft_vfpv3_d16_exn_rtti_unaligned{{$}}

# RUN: not %clang -print-multi-directory --target=arm-none-eabi -march=armv7a -frwpi 2>%t | FileCheck --check-prefix=RWPI --allow-empty %s
# RUN: FileCheck --check-prefix=RWPI_ERR %s < %t
# RWPI-NOT: arm-none-eabi
# RWPI_ERR: clang: error: multilib configuration error: Arm Toolchain for Embedded does not provide RWPI library variants