https://bugzilla.redhat.com/show_bug.cgi?id=2166379



--- Comment #9 from Jan Staněk <[email protected]> ---
(In reply to Tom Stellard from comment #7)
> The spec file looks OK to me.  The only part I'm not sure about is
> completely overriding the build_cflags.  Normally, I would object to this,
> but I don't know which of the flags in build_cflags are supported or even
> relevant for wasm.  Have you checked to see which flags the upstream uses ?

In upstream, the CFLAGS originally contain `-O2 -DNDEBUG`, and then a bunch of
other flags are appended:

> CFLAGS += --target=$(TARGET_TRIPLE)
> CFLAGS += -fno-trapping-math
> CFLAGS += -Wall -Wextra -Werror \
>   -Wno-null-pointer-arithmetic \
>   -Wno-unused-parameter \
>   -Wno-sign-compare \
>   -Wno-unused-variable \
>   -Wno-unused-function \
>   -Wno-ignored-attributes \
>   -Wno-missing-braces \
>   -Wno-ignored-pragmas \
>   -Wno-unused-but-set-variable \
>   -Wno-unknown-warning-option
... and also flags specific for threading model, etc.

Originally, I tried to just patch/adjust the build_cflags as set by
distribution, but that throws off testing – during build, the compiler emits
definitions and values of a list of macros (`#define __SIZE_MAX__ 4294967295UL`
and similar) and these are checked against expected values. Using the
distribution flags, the expected files had to be patched. Some of the values I
know to be pretty much just informational, however, most of them are not
familiar to me, so I prefer not to touch them unless necessary.

In other words, I'm not against just adjusting/specifying different
%build_cflags, but someone has to tell me what the correct value is :)


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