Fixed build error for Windows.

* Do not link dl when os=windows

* Partially resolves MLCE-996

Change-Id: Ibc036cc69aa9b146f263eb69d64fcb89ace2c97c
Signed-off-by: Pablo Tello <pablo.tello@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9040
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>
diff --git a/SConstruct b/SConstruct
index 8603017..ca53246 100644
--- a/SConstruct
+++ b/SConstruct
@@ -499,6 +499,8 @@
     env.Append(CXXFLAGS = [ '-Wno-float-conversion', '-Wno-switch-enum','-Wno-comma'])
     env.Append(CXXFLAGS = [ '-Wno-implicit-float-conversion', '-Wno-deprecated-declarations','-Wno-old-style-cast'])
     env.Append(CXXFLAGS = [ '-Wno-zero-as-null-pointer-constant', '-Wno-inconsistent-missing-destructor-override'])
+    env.Append(CXXFLAGS = [ '-Wno-asm-operand-widths'])
+
 
 if env['specs_file'] != "":
     env.Append(LINKFLAGS = ['-specs='+env['specs_file']])