leathers

This C++ header only library helps to save some space while ignoring compiler warnings by pragma pop/push mechanism.

Example

Some mix-compiler code:

#if defined(BOOST_MSVC)
# pragma warning(push)
# pragma warning(disable : 4511 4512)
#elif defined(BOOST_CLANG)
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wexit-time-destructors"
#endif
// some code
#if defined(BOOST_MSVC)
# pragma warning(pop)
#elif defined(BOOST_CLANG)
# pragma clang diagnostic pop
#endif

12 lines of code for 2 compilers to ignore warning in 1 line.

Using this library:

#include <leathers/push>
#include <leathers/exit-time-destructors>
// some code
#include <leathers/pop>

3 lines of code for any number of compilers to ignore warning in 1 line.

Example (all)

Suppressing warnings in third party libraries:

#include <leathers/push>
#include <leathers/all>
# include <third_party/library1/headerA>
# include <third_party/library2/headerB>
#include <leathers/pop>

Usage (manual install)

• Install boost (predef library)
• Add Source directory to compiler include option: -I${LEATHERS_ROOT}/Source

> cat foo.cpp
#include <cstdio> // std::printf

int main() {
  const char* fmt = "%d";

#include <leathers/push>
#include <leathers/format>
  std::printf(fmt, 1);
#include <leathers/pop>
}
> clang++ -I${BOOST_ROOT}/include -I${LEATHERS_ROOT}/Source -Weverything foo.cpp

Usage (CMake, hunter package manager)

Leathers can be installed using hunter package manager:

> cat CMakeLists.txt
cmake_minimum_required(VERSION 3.0)
project(Foo)

include(HunterGate.cmake)
hunter_add_package(Leathers)

find_package(Leathers CONFIG REQUIRED)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Weverything -Werror")

add_executable(foo foo.cpp)
target_link_libraries(foo leathers)
> cat foo.cpp
#include <cstdio> // std::printf

int main() {
  const char* fmt = "%d";

#include <leathers/push>
#include <leathers/format>
  std::printf(fmt, 1);
#include <leathers/pop>
}
> cmake -H. -B_builds -DHUNTER_STATUS_DEBUG=ON
> cmake --build _builds

Note that boost installed automatically

CMake (companion function to generate warning flags)

This function can be used to generate cross-platform target flags and properties:

> cat CMakeLists.txt
cmake_minimum_required(VERSION 3.0)
project(Foo)

include(HunterGate.cmake)
hunter_add_package(Leathers)
hunter_add_package(Sugar)

find_package(Leathers CONFIG REQUIRED)
include(${SUGAR_ROOT}/cmake/Sugar)
include(sugar_generate_warning_flags)

sugar_generate_warning_flags(
    flags properties ENABLE ALL TREAT_AS_ERROR ALL CLEAR_GLOBAL
)

add_executable(foo foo.cpp)
target_link_libraries(foo leathers)

set_target_properties(
    foo PROPERTIES ${properties} COMPILE_OPTIONS "${flags}"
)
> cat foo.cpp
#include <cstdio> // std::printf

int main() {
  const char* fmt = "%d";

#include <leathers/push>
#include <leathers/format>
  std::printf(fmt, 1);
#include <leathers/pop>
}
> cmake -H. -B_builds -DHUNTER_STATUS_DEBUG=ON
> cmake --build _builds

Wiki

• warnings list
• pitfalls