-improve crosscompiling from Linux to iphone (#10526)

Patch by Karol Krizka

Alex

Source/cmMakefileExecutableTargetGenerator.cxx

@@ -229,10 +229,8 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
   // Add language feature flags.
   this->AddFeatureFlags(flags, linkLanguage);
 
-#ifdef __APPLE__
   this->LocalGenerator->AddArchitectureFlags(flags, this->Target,
                                              linkLanguage, this->ConfigName);
-#endif /* __APPLE__ */
 
   // Add target-specific linker flags.
   this->LocalGenerator->AppendFlags