SplitObjs fails on sparc with GNU ld
On Sparc, GNU ld reports the restriction that
ld: --relax and -r may not be used togetherGHC call gcc with the flags
gcc -Wl,-r -Wl,-x -o Foo.o Foo_o_split/ld.scriptthus instructing gcc to call ld with the -r flag.
It is gcc that supplies the -relax flag. According to gcc -dumpspecs this is gcc's default if the -mno-relax or -r flags are not supplied. Since ghc supplies gcc with -Wl,-r and not -r, then gcc does not omit the -relax flag and thus the problem occurs.
The problem could be avoided by ghc using -r instead of -Wl,-r, or by passing -mno-relax. The latter is probably preferable since -mno-relax is an official gcc flag (which has no effect on arches where -relax does nothing) whereas -r is a linker flag that gcc will pass through. Note that -mno-relax is only needed when we're using -r, indeed allowing gcc to use -relax for normal final links is an optimisation.
As a workaround users can build with SplitObjs=NO in mk/build.mk. It may also work to set SRC_HC_OPTS=-optl-mno-relax.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.12.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | low |
| Resolution | Unresolved |
| Component | Driver |
| Test case | |
| Differential revisions | |
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| Related | |
| Blocking | |
| CC | |
| Operating system | |
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