Target Improvements

[coder137]

• [x] Target states (Build, BuildComplete)
  • [x] Build == TRUE when first build or rebuilt
  • [x] Lock == TRUE after Build is called
• [x] Add LOCK/UNLOCK of usage of functions after Target::Build
  • Some APIs can only be used after build function is called
  • Some APIs should not be used after build function is called
• [x] Check if dependency on Generator is required (revert back to old implementation if required)
• [x] Target Config for defaults
• [x] Add language detection (.asm, .c, .cpp) flags (has_asm, has_c, has_cpp) for compiler specific commands
• [x] Friend classes for private functions
  • [x] CompilePCH
  • [x] CompileObject
  • [x] LinkTarget
• [x] Basic Copy API instead of custom CopyTarget class
  • [x] Copy by Target move
  • [x] Copy by Target const ref
• [x] Target root and build dir customization
• [x] CRTP to add API and Features (https://www.fluentcpp.com/2017/05/16/what-the-crtp-brings-to-code/)
  • [x] Copy API
  • [x] Insert API
  • [x] Source API
  • [x] Header and Include Dir API
  • [x] PCH API
  • [x] Lib Dep and Lib Dir API
  • [x] Flags API
  • [x] Rebuild Deps API
  • [x] Getters and Target Info API
• [ ] Append APIs (Similar to Add APIs)
• [ ] Target strings
  • Refactor magic strings to constexpr const char * const
• [ ] Callbacks for Build customizability
• [ ] Custom compile and link arguments with user defined variables similar to Command::AddDefaultArguments

[coder137]

117 [Revert] Target with Generator

[coder137]

118 Target lock unlock

[coder137]

121 Target Config

[coder137]

123 Target Source State (detect ASM, C and CPP files)

[coder137]

128 PCH friend module for private functions

129 Object friend module for private functions

130 Target link friend module for private functions

[coder137]

134 Target Copy

[coder137]

141 Target root and build dir customization

[coder137]

143 Target Copy by move

[coder137]

148 Target Copy API

149 Target Source API

150 Target Include & Header API

151 Target Lib Dep and Lib Dir API

152 Target PCH API

153 Target Flags API

154 Target Deps API

[coder137]

155 Target Info and Getters

[coder137]

160 Target Insert API