Meson's compiler.has_header is completely useless, it only checks that a header exists, not whether it's usable. This creates problems if a header contains a conditional #error declaration, like so:
#if __x86_64__ # error "Doesn't work with x86_64!" #endif
Compiler.has_header will return true in this case, even when compiling for x86_64. This is useless.
Instead, we'll do a compile check so that any #error declarations will be treated as errors, and compilation will work.
Fixes compilation on x32 architecture.
Gentoo Bugzilla: https://bugs.gentoo.org/show_bug.cgi?id=649746 meson bug: https://github.com/mesonbuild/meson/issues/2246 CC: Matt Turner mattst88@gmail.com Signed-off-by: Dylan Baker dylan.c.baker@intel.com --- meson.build | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/meson.build b/meson.build index df6f2bd2..a0c79e30 100644 --- a/meson.build +++ b/meson.build @@ -186,10 +186,10 @@ else dep_rt = [] endif dep_m = cc.find_library('m', required : false) -if cc.has_header('sys/sysctl.h') +if cc.compiles('#include <sys/sysctl.h>', name : 'sys/sysctl.h works') config.set10('HAVE_SYS_SYSCTL_H', true) endif -if cc.has_header('sys/select.h') +if cc.compiles('#include <sys/select.h>', name : 'sys/select.h works') config.set10('HAVE_SYS_SELECT_H', true) endif if cc.has_header_symbol('sys/sysmacros.h', 'major')