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| author | Kito Cheng <kito.cheng@sifive.com> | 2019-07-10 01:54:14 -0700 |
|---|---|---|
| committer | Kito Cheng <kito.cheng@sifive.com> | 2019-07-10 03:46:15 -0700 |
| commit | cefbba59925a01248b63ed85e0d0f96bfd1fed13 (patch) | |
| tree | 372db396143f501799863a87302e4cbeea8bb2eb /Makefile.in | |
| parent | 0964df608baed5e71da6a89a5c17338a852fd112 (diff) | |
| download | riscv-gnu-toolchain-cefbba59925a01248b63ed85e0d0f96bfd1fed13.zip riscv-gnu-toolchain-cefbba59925a01248b63ed85e0d0f96bfd1fed13.tar.gz riscv-gnu-toolchain-cefbba59925a01248b63ed85e0d0f96bfd1fed13.tar.bz2 | |
Build newlib with POSIX mode
- newlib was default to XOPEN MODE before 2018/12/6[1], but newlib
decide to remove XOPEN mode SVID3 mode, and change the default IEEE
mode.
- The problem is IEEE won't set errno on several math function, so
build with POSIX mode would be better for newlib.
- For newlib nano, we might able to build with _IEEE_LIBM in future
to reduce code size, and improve performance.
[1] https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;a=commit;h=b14a879d85b171960df789ac8ba2332004f838e0
Diffstat (limited to 'Makefile.in')
| -rw-r--r-- | Makefile.in | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Makefile.in b/Makefile.in index c7938b7..12e3934 100644 --- a/Makefile.in +++ b/Makefile.in @@ -477,8 +477,8 @@ stamps/build-newlib: $(srcdir)/riscv-newlib stamps/build-gcc-newlib-stage1 --enable-newlib-io-long-long \ --enable-newlib-io-c99-formats \ --enable-newlib-register-fini \ - CFLAGS_FOR_TARGET="-O2 $(CFLAGS_FOR_TARGET)" \ - CXXFLAGS_FOR_TARGET="-O2 $(CXXFLAGS_FOR_TARGET)" + CFLAGS_FOR_TARGET="-O2 -D_POSIX_MODE $(CFLAGS_FOR_TARGET)" \ + CXXFLAGS_FOR_TARGET="-O2 -D_POSIX_MODE $(CXXFLAGS_FOR_TARGET)" $(MAKE) -C $(notdir $@) $(MAKE) -C $(notdir $@) install mkdir -p $(dir $@) && touch $@ |