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Sergei Trofimovich authored
Reported by mitchty: When porting ghc to alpine linux (rumors say they build all binaries as Position Independent Executables to leverage global ASLR) linker issued obscure errors: Tiny example: $ echo 'main = print "hello"' > a.hs $ ghc -fforce-recomp a.hs -fPIC -dynamic -optl-pie -o a ld: /tmp/ghc2142_0/ghc2142_5.o: relocation R_X86_64_32 against `ZCMain_main_closure' can not be used when making a shared object; recompile with -fPIC /tmp/ghc2142_0/ghc2142_5.o: error adding symbols: Bad value collect2: error: ld returned 1 exit status There is two entry points in CC driver: 'runPhase' (CC) and 'mkExtraObj' 'mkExtraObj' does not handle most of 'runPhase's complexity. Ideally it should. This patch only adds -fPIC propagation to 'mkExtraObj'. Please merge to stable branch. Signed-off-by: Sergei Trofimovich <siarheit@google.com>
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