[email protected] wrote:
Rob Landley wrote:
Isaac Dunham wrote:
Two changes to shut up GCC:
* __GLIBC__ was checked unconditionally;
this made for a very messy build on musl.
According to my C99 draft section 6.10.1.3:
After all replacements due to macro expansion and the defined unary
operator have been performed, all remaining identifiers are replaced
with the pp-number 0, and then each preprocessing token is converted
into a token.
That seems like a broken compiler? Still, portability.h is the place
to workaround that kind of breakage. But I'd prefer to isolate it to
its own stanza that blames the right thing so when we no longer care
about gcc 3.4 know to remove it instead of having Magic Thing.
I don't know if it's standards-conformant or not
gcc's behaviour is standards conformant - it's preprocessing the file
fine, there's just an additional warning that you're using an undefined
preprocessor identifier in #if. The warning isn't enabled by default, I
imagine it comes from -Wundef in the configure script, line 7.
Rob
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