On 4/3/22 12:21, Peter Maydell wrote:
Currently we incorrectly think that posix_memalign() exists on
Windows.  This is because of a combination of:

  * the msys2/mingw toolchain/libc claim to have a
    __builtin_posix_memalign when there isn't a builtin of that name
  * meson will assume that if you have a __builtin_foo that
    counts for has_function('foo')

Specifying a specific include file via prefix: causes meson to not
treat builtins as sufficient and actually look for the function
itself; see this meson pull request which added that as the official
way to get the right answer:
   https://github.com/mesonbuild/meson/pull/1150

Interesting, TIL.

Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>

Currently this misdectection doesn't cause problems because we only
use CONFIG_POSIX_MEMALIGN in oslib-posix.c; however that will change
in a following commit.

Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Message-id: 20220226180723.1706285-6-peter.mayd...@linaro.org
---
  meson.build | 4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

Reply via email to