[babl] build: set more of the simd_cflags when not found

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 3aaeb2588e264b377d9f33b2a3f11881992b8fca
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Aug 2 15:26:00 2019 +0200

    build: set more of the simd_cflags when not found
    
    Further attempt at mitigating issue #41.

 meson.build | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/meson.build b/meson.build
index 85a8554..0510932 100644
--- a/meson.build
+++ b/meson.build
@@ -256,12 +256,23 @@ if cc.has_argument('-mmmx') and get_option('enable-mmx')
       endif
     else
       sse_args = '-Wall'
+      sse2_args = '-Wall'
+      sse4_1_cflags = '-Wall'
+      avx2_cflags = '-Wall'
     endif
   else
     mmx_args = '-Wall'
+    sse_args = '-Wall'
+    sse2_args = '-Wall'
+    sse4_1_cflags = '-Wall'
+    avx2_cflags = '-Wall'
   endif
 else
   mmx_args = '-Wall'
+  sse_args = '-Wall'
+  sse2_args = '-Wall'
+  sse4_1_cflags = '-Wall'
+  avx2_cflags = '-Wall'
 endif
 
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