Fix race with LLVM and bison.

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От Maksim.Melnikov
Тема Fix race with LLVM and bison.
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Msg-id f070a61e-1dd3-4fd9-bbc9-18d100b6722a@postgrespro.ru
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Ответы Re: Fix race with LLVM and bison.
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Hi All.

I've found build error in configuration --with-llvm

CPPFLAGS="-O2" ./configure --enable-debug --enable-cassert 
--enable-tap-tests --with-openssl --with-icu  --with-llvm

....

make world-bin -j3

....

cubescan.c:9:10: fatal error: 'cubeparse.h' file not found
     9 | #include "cubeparse.h"  /* must be after cubedata.h for YYSTYPE 
and NDBOX */

....
segscan.c:9:10: fatal error: 'segparse.h' file not found
     9 | #include "segparse.h"   /* must be after segdata.h for SEG */


The reason is race, that exist between LLVM compilation and bison source 
code generation and compilation can occur first.

Ideally LLVM compilation target should depend on header files targets.

The error is difficult to reproduce and I've done simple patch to have 
stable reproducing. Fix patch is also attached.

Thanks.

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