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* ports: add Linux build scripts for Cortex-A5 SMP * ports: fix Cortex-A5 SMP sample linking on Linux * ports: add Linux build scripts for Cortex-A7 and A9 SMP * ports: fix Cortex-A7 SMP assembly source path * wip: add ATFE selection to Armv7 SMP scripts * ports: complete Armv7 SMP Linux toolchain support * ports: add local startup for Armv7 SMP samples * ports: add license headers to Armv7 SMP scripts * Dropped the preprocessing flag the file extension now carries Two lines named assembly sources that #672 renamed. That change moved twenty-nine files under gnu trees from .s to .S, because GAS runs the C preprocessor on .S and not on .s: in a .s file every # line is a comment, so a #define is never substituted and an #if/#else pair emits both arms. Four files were silently doing the wrong thing as a result, including ports_smp/cortex_a7_smp/gnu/src/tx_thread_smp_unprotect.s, which ignored all four of its own feature macros. These scripts had worked around the same defect with -x assembler-with-cpp rather than hitting it, which was correct when they were written. With the rename the flag is redundant and the lowercase names no longer resolve, so cortex_a5_smp/build_threadx.sh failed with "cc1: fatal error: tx_initialize_low_level.s: No such file or directory". The other seven references to those two files across these three scripts already named them with a capital S. Verified with the pinned Arm GNU 14.3.rel1 rather than the 13.2 that a distro package supplies: build_threadx.sh and build_threadx_sample.sh both succeed for a5, a7 and a9, all three link a sample_threadx.out, and scripts/check_gcc.sh passes end to end with its example stage reading 45 of 45, up from 42. Assisted-by: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: Frédéric Desbiens <frederic.desbiens@eclipse-foundation.org>