233 |     if (RtsFlags.CcFlags.outputFileNameStem) {
    |                         ^

rts/Profiling.c:234:32: error:
     error: 'COST_CENTRE_FLAGS' has no member named 'outputFileNameStem'
             stem = RtsFlags.CcFlags.outputFileNameStem;
                                    ^
    |
234 |         stem = RtsFlags.CcFlags.outputFileNameStem;
    |                                ^
rts/Profiling.c: In function 'reportCCSProfiling':

rts/Profiling.c:711:9: error:
     warning: implicit declaration of function 'writeCCSReportJson' [-Wimplicit-function-declaration]
             writeCCSReportJson(prof_file, stack, totals);
             ^
    |
711 |         writeCCSReportJson(prof_file, stack, totals);
    |         ^

rts/Profiling.c:711:9: error:
     warning: nested extern declaration of 'writeCCSReportJson' [-Wnested-externs]
    |
711 |         writeCCSReportJson(prof_file, stack, totals);
    |         ^
`gcc48' failed in phase `C Compiler'. (Exit code: 1)
rts/ghc.mk:248: recipe for target 'rts/dist/build/Profiling.p_o' failed
gmake[1]: *** [rts/dist/build/Profiling.p_o] Error 1
Makefile:122: recipe for target 'all' failed
gmake: *** [all] Error 2