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4f182ee470
Programs using non-local gotos on AArch64 crash when compiled with
newer versions of GCC:
gcc 6.3.0 (Debian 9) - ok
gcc 8.3.0 (Debian 10) - ok
gcc 9.3.0 (Debian 11) - crash
gcc 10.2 (Debian 11) - crash
Specifically, the programs only crash when compiled with PIC,
but PIC is commonly the default now.
This is Mantis bug #560.
configure.ac:
Disable non-local gotos on AArch64 when using GCC 9+.
README.Linux-aarch64:
Mention the problem.
10 lines
434 B
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10 lines
434 B
Plaintext
This file documents the port of Mercury to Linux on AArch64 (ARM64),
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i.e. the `aarch64*-linux*` configuration.
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Mercury should build and install "out-of-the-box" on Linux for AArch64.
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Low-level C grades using non-local gotos, i.e. asm_fast.*, do not work
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with GCC 9 or later. Non-PIC (position-independent code) actually does
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still work, but PIC is commonly the default.
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If you require a low-level C grade, please use a reg.* grade.
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