From: Rosen Penev <rosenp@gmail.com>
Date: Sat, 30 Apr 2022 01:19:53 +0000 (-0700)
Subject: meson: fix isnan check
X-Git-Tag: v2.39-rc1~682^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=777652585924034deeba98ae3192f26bc32bb661;p=thirdparty%2Futil-linux.git

meson: fix isnan check

musl only has isnan as a macro, not as a function. Handle the former
case.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---

diff --git a/meson.build b/meson.build
index ef67e54245..e353c1c312 100644
--- a/meson.build
+++ b/meson.build
@@ -623,7 +623,7 @@ rtas_libs = cc.find_library('rtas', required : false)
 conf.set('HAVE_LIBRTAS', rtas_libs.found() ? 1 : false)
 
 math_libs = []
-if not cc.has_function('isnan')
+if not cc.has_header_symbol('math.h', 'isnan')
   lib = cc.find_library('m', required : true)
   if (cc.has_function('isnan', dependencies : lib) and
       cc.has_function('__isnan', dependencies : lib))