compiler: explicitly disable PIC in wasm32 NCG

This commit explicitly disables the ncgPIC flag for the wasm32 target.
The wasm backend doesn't support PIC for the time being.

compiler/GHC/Driver/Config/CmmToAsm.hs

@@ -21,7 +21,8 @@ initNCGConfig dflags this_mod = NCGConfig
    , ncgAsmContext            = initSDocContext dflags PprCode
    , ncgProcAlignment         = cmmProcAlignment dflags
    , ncgExternalDynamicRefs   = gopt Opt_ExternalDynamicRefs dflags
-   , ncgPIC                   = positionIndependent dflags
+   -- no PIC on wasm32 for now
+   , ncgPIC                   = positionIndependent dflags && not (platformArch (targetPlatform dflags) == ArchWasm32)
    , ncgInlineThresholdMemcpy = fromIntegral $ maxInlineMemcpyInsns dflags
    , ncgInlineThresholdMemset = fromIntegral $ maxInlineMemsetInsns dflags
    , ncgSplitSections         = gopt Opt_SplitSections dflags