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| author | H.J. Lu <hjl.tools@gmail.com> | 2016-07-05 15:01:33 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-07-05 15:01:46 -0700 |
| commit | 8321286846970af562a2ff6b7272f1cd0860d6c1 (patch) | |
| tree | f55e67f1454183794137df937393b034589a30a7 /Makeconfig | |
| parent | 00068ce40c3885ae0598e55a163632d78dfe42bf (diff) | |
Make copies of cstdlib/cmath and use them [BZ #20314]
If C++ headers <cstdlib> or <cmath> are used, GCC 6 will include
/usr/include/stdlib.h or /usr/include/math.h from "#include_next"
(instead of stdlib/stdlib.h or math/math.h in the glibc source
directory), and this turns up as a make dependency. An implicit
rule will kick in and make will try to install stdlib/stdlib.h or
math/math.h as /usr/include/stdlib.h or /usr/include/math.h because
the target is out of date. We make a copy of <cstdlib> and <cmath>
in the glibc build directory so that stdlib/stdlib.h and math/math.h
will be used instead of /usr/include/stdlib.h and /usr/include/math.h.
[BZ #20314]
* Makeconfig (CXXFLAGS): Prepend -I$(common-objpfx).
* Makerules (before-compile): Add $(common-objpfx)cstdlib and
$(common-objpfx)cmath.
($(common-objpfx)cstdlib): New target.
($(common-objpfx)cmath): Likewise.
Diffstat (limited to 'Makeconfig')
| -rw-r--r-- | Makeconfig | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Makeconfig b/Makeconfig index 901e253453..03fd89c13e 100644 --- a/Makeconfig +++ b/Makeconfig @@ -889,7 +889,8 @@ override CFLAGS = -std=gnu11 -fgnu89-inline $(config-extra-cflags) \ $(CFLAGS-$(@F)) $(tls-model) \ $(foreach lib,$(libof-$(basename $(@F))) \ $(libof-$(<F)) $(libof-$(@F)),$(CFLAGS-$(lib))) -override CXXFLAGS = $(c++-sysincludes) \ +# Use our copies of cstdlib and cmath. +override CXXFLAGS = -I$(common-objpfx) $(c++-sysincludes) \ $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \ $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F)) |