A one file improvement to target_compile_options
pwropt allows cross platform compile/link options in CMake, so you don't have to fiddle with compiler specific flags (most of the time). Specifically made with C/C++ in mind.
CMake 3.3 or above must be used. If you aren't using much higher you should.
Same functionality as target_compile_options and target_link_options have in CMake, with some differences.
All pwr_<name> flags are translated to the compiler equivalent - this is the main power of the library, you no longer have to remember differing flags per compiler. Flags that are not recognized by pwropt pass through unchanged so you can migrate to pwropt easily, and use flags pwropt doesn't support.
Also, you can specify the compilers you want these flags to apply to (Using flags from the CMake documentaton. This is largely because generator expressions wont work in user defined functions, but it is also neater.
The parsing functions used internally by these functions are
pwropt_target_link_options(<target> [BEFORE]
[<COMPILERS> [compiler1...]]
<INTERFACE|PUBLIC|PRIVATE> [items1...]
[<INTERFACE|PUBLIC|PRIVATE> [items2...] ...]) pwropt_target_compile_options(<target> [BEFORE]
[<COMPILERS> [compiler1...]]
<INTERFACE|PUBLIC|PRIVATE> [items1...]
[<INTERFACE|PUBLIC|PRIVATE> [items2...] ...])pwropt_parse_options(<outputvar> <COMPILE|LINK>
[<COMPILERS> [compiler1...]]
<OPTIONS> [items1...])pwropt_parse_option(<outputvar> <COMPILE|LINK>
[<COMPILERS> [compiler1...]]
<OPTION> <item>
)Very basic usage to give the idea.
FetchContent_Declare(
pwropt
GIT_REPOSITORY https://github.com/BetaJester/pwropt.git
GIT_TAG main
)
FetchContent_MakeAvailable(pwropt)
add_subdirectory(${pwropt_SOURCE_DIR})
add_executable(someapp "main.cpp")
pwropt_target_compile_options(someapp PRIVATE pwr_wall pwr_werror pwr_lto) # All compilers
pwropt_target_compile_options(someapp COMPILERS Clang GNU PRIVATE pwr_Odebug) # Just Clang and GCC.
pwropt_target_link_options(someapp PRIVATE pwr_lto)Currently the best source of flags is from the spreadsheet used to generate the data.
The spreadsheet used to generate the data also lists compilers, but at the moment MSVC, Clang (and variants like AppleClang) and GCC are supported explicitly. There is still a lot of work to do building the database to run this at the quality I hope for.
MIT License
Copyright (c) 2021 Glenn Duncan
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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