Commit 01b062ec authored by Committed by Ben GamariBrowse files
unique: fix UNIQUE_BITS crosscompilation (Trac #13491)
The #13491 manifests best when we try to crosscompile from 32-bit (i386-linux) to 64-bit (powerpc64-linux) system: ./configure --target=powerpc64-unknown-linux-gnu The build fails at assembly time: "inplace/bin/ghc-stage1" ... -c rts/StgStartup.cmm /tmp/ghc19687_0/ghc_4.s: Assembler messages: /tmp/ghc19687_0/ghc_4.s:11:0: error: Error: unknown pseudo-op: `.l' | 11 | .L<\x00>4: | ^ That happens because UNIQUE_BITS is defined in terms of WORD_SIZE_IN_BITS macro: #define UNIQUE_BITS (WORD_SIZE_IN_BITS - 8) WORD_SIZE_IN_BITS is 64 bits (equals to target value) while ghc-stage1 is still running on i386-linux The fix is to stop relying on target macros and use host's 'sizeof (HsInt)' and 'finiteBitSize' way to determine unique layout. Signed-off-by: Sergei Trofimovich <firstname.lastname@example.org> Test Plan: build i386-to-powerpc64 crosscompiler Reviewers: rwbarton, austin, bgamari Reviewed By: bgamari Subscribe...
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