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Fix macOS on arm64 CI failure: pass LUA_LIBDIR in rockspecs#5

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Fix macOS on arm64 CI failure: pass LUA_LIBDIR in rockspecs#5
cclauss wants to merge 1 commit into
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@cclauss cclauss commented Jun 19, 2026 •
edited by Copilot AI
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Fixes the failing GitHub Actions "ci (macos-latest)" job.

Root Cause

The linker on macOS was receiving -L/opt/homebrew/opt/lua/include/lua5.5 (the include directory) instead of the lib directory, causing ld: library 'lua' not found.

This happened because Makefile.luarocks derives the Lua library path from the include path using patsubst %/include,%/lib,$(LUA_INCDIR). This substitution only works when the path ends with /include, but Homebrew installs Lua with a versioned subdirectory (e.g. /opt/homebrew/opt/lua/include/lua5.5), so the pattern never matched and the include path was passed unchanged to -L.

Fix

Added LUA_LIBDIR = '$(LUA_LIBDIR)' to the variables table in both rockspecs:

  • lunatic-python-scm-0.rockspec
  • rockspecs/lunatic-python-1.0-1.rockspec

LuaRocks already knows the correct library directory and exposes it as $(LUA_LIBDIR). Passing it explicitly means the Makefile's $(or $(LUA_LIBDIR),...) logic uses it directly, bypassing the broken patsubst fallback. The linker now correctly receives -L/opt/homebrew/opt/lua/lib -llua.

@cclauss cclauss force-pushed the luarocks-on-macos-and-windows branch 30 times, most recently from e577fb7 to d431a55 Compare June 19, 2026 09:54
@cclauss cclauss force-pushed the luarocks-on-macos-and-windows branch 2 times, most recently from 2a6a8d9 to 55c4430 Compare June 19, 2026 13:02
cclauss added a commit that referenced this pull request Jun 25, 2026
@cclauss
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@cclauss cclauss force-pushed the luarocks-on-macos-and-windows branch 2 times, most recently from 105a57c to d10d3dc Compare June 25, 2026 07:49
cclauss added a commit that referenced this pull request Jun 25, 2026
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@cclauss cclauss force-pushed the luarocks-on-macos-and-windows branch from d10d3dc to 09e5ed9 Compare June 25, 2026 07:59
cclauss added a commit that referenced this pull request Jun 25, 2026
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@cclauss cclauss force-pushed the luarocks-on-macos-and-windows branch from 09e5ed9 to a6ca96d Compare June 25, 2026 08:05
cclauss added a commit that referenced this pull request Jun 25, 2026
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cclauss added a commit that referenced this pull request Jun 25, 2026
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@cclauss cclauss force-pushed the luarocks-on-macos-and-windows branch from a6ca96d to cdc89d7 Compare June 25, 2026 08:06
cclauss added a commit that referenced this pull request Jun 25, 2026
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@cclauss cclauss force-pushed the luarocks-on-macos-and-windows branch 2 times, most recently from 0721250 to 5e6bddf Compare June 25, 2026 08:16
cclauss added a commit that referenced this pull request Jun 25, 2026
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@cclauss cclauss force-pushed the luarocks-on-macos-and-windows branch from 5e6bddf to aa2222b Compare June 25, 2026 08:31
cclauss added a commit that referenced this pull request Jun 25, 2026
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@cclauss cclauss force-pushed the luarocks-on-macos-and-windows branch 9 times, most recently from d3e154e to 3a6791a Compare June 25, 2026 09:08
@cclauss

cclauss commented Jun 25, 2026

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@copilot That is worse, not better.

ld: warning: search path '-llua' not found
Undefined symbols for architecture arm64:

Copilot AI commented Jun 25, 2026

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@copilot That is worse, not better.

ld: warning: search path '-llua' not found

...

Fixed in 8049d8f. I updated Makefile.luarocks to derive the Lua lib path from LUA_INCDIR when LUA_LIBDIR is not passed, so the link step no longer emits -L -llua and now links against the correct Lua library path.

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