Simple cross-platform open source weather by city application. Hunter package manager usage example.

Used service

• http://openweathermap.org/api

C/C++ core

• Boost
• Sober
• CppNetlib.URI
• GTest
• JSONSpirit

Build system

• CMake
• with modules:
• Sugar - tools, wrappers, workarounds, ...
• Polly - toolchain files
• Hunter - package manager

Requirements

• CMake version 3.0 (more)
• HUNTER_ROOT environment variable (more)
• Python 3 (For Xcode and Visual Studio based projects)
• POLLY_ROOT environment variable (for toolchain-based builds, more)

Usage

Note that a lot of time (> 1 hour) and space (> 1 GB) may be required for build, so be patient and consider test this tiny-project before run.

Download and unpack

Download and unpack current release archive and cd to unpacked directory. Unix-style:

> wget https://github.com/ruslo/weather/archive/v1.2.0.tar.gz
> tar xf v1.2.0.tar.gz
> cd weather-1.2.0

Build and test

• Windows Visual Studio
• Windows Cygwin
• Linux
• Mac Xcode
• Mac Makefile
• Mac iOS

Windows (Visual Studio, tested with 2013 32/64)

• Run cmd and check cmake version, HUNTER_ROOT environment, python 3:

> where cmake
\path\to\cmake
> cmake --version
cmake version 3.0.0
> where python
\path\to\python.exe
> python --version
Python 3.x.x
> echo %HUNTER_ROOT%
\path\to\hunter\root

• Start build:

> cmake -H. -B_builds -DHUNTER_STATUS_DEBUG=ON -G"Visual Studio 12 2013 Win64"
> cmake --build _builds --config Release

• Test it:

> _builds\Release\weather-cli.exe Madrid > result.txt
# open result.txt with utf-8 friendly text editor (notepad fits fine)

Windows (cygwin)

• Not working (g++-4.8.3 don't have std::to_string which is used by CppNetlib.URI)

Linux

• Check cmake version, HUNTER_ROOT and POLLY_ROOT environment variables:

> which cmake
/path/to/cmake
> cmake --version
cmake version 3.0.0
> echo $HUNTER_ROOT
/path/to/hunter/root/
> echo $POLLY_ROOT
/path/to/toolchains

• Pick toolchain with c++11 support, for example gcc (gcc -std=c++11):

> ls $POLLY_ROOT/gcc.cmake
/path/to/toolchains/gcc.cmake

• Start build:

> cmake -H. -B_builds -DHUNTER_STATUS_DEBUG=ON -DCMAKE_TOOLCHAIN_FILE=$POLLY_ROOT/gcc.cmake
> cmake --build _builds

• Test it:

> ./_builds/weather-cli Madrid
City: Madrid
Success...
  longitude: -3.7
  latitude: 40.42
  temperature: 17.17
  temperature(human): +17.2 ℃
  description: sky is clear
  icon: 02d
Done

Mac (Xcode)

• Check cmake version, python 3, HUNTER_ROOT and POLLY_ROOT environment variables:

> which cmake
/path/to/cmake
> cmake --version
cmake version 3.0.0
> which python3
/path/to/python3
> echo $HUNTER_ROOT
/path/to/hunter/root/
> echo $POLLY_ROOT
/path/to/toolchains

• Check xcode toolchain and start build:

> ls $POLLY_ROOT/xcode.cmake
/path/to/toolchains/xcode.cmake
> cmake -H. -B_builds -DHUNTER_STATUS_DEBUG=ON -DCMAKE_TOOLCHAIN_FILE=$POLLY_ROOT/xcode.cmake -GXcode
> cmake --build _builds --config Release

• Test it:

> ./_builds/Release/weather-cli Madrid
City: Madrid
Success...
  longitude: -3.7
  latitude: 40.42
  temperature: 21.69
  temperature(human): +21.7 ℃
  description: Sky is Clear
  icon: 01d
Done

Mac (Makefile)

• Check cmake version, HUNTER_ROOT and POLLY_ROOT environment variables:

> which cmake
/path/to/cmake
> cmake --version
cmake version 3.0.0
> echo $HUNTER_ROOT
/path/to/hunter/root/
> echo $POLLY_ROOT
/path/to/toolchains

• Pick toolchain with c++11 support, for example libcxx (clang -std=c++11 -stdlib=libc++):

> ls $POLLY_ROOT/libcxx.cmake
/path/to/toolchains/libcxx.cmake

• Start build:

> cmake -H. -B_builds -DHUNTER_STATUS_DEBUG=ON -DCMAKE_TOOLCHAIN_FILE=$POLLY_ROOT/libcxx.cmake
> cmake --build _builds

• Test it:

> ./_builds/weather-cli Madrid
City: Madrid
Success...
  longitude: -3.7
  latitude: 40.42
  temperature: 17.71
  temperature(human): +17.7 ℃
  description: Sky is Clear
  icon: 01d
Done

Mac (iOS)

• Build patched cmake and add it to the PATH:

> CMAKE_VERSION="3.0.0-ios-universal"
> wget "https://github.com/ruslo/CMake/archive/v${CMAKE_VERSION}.tar.gz"
> tar xf "v${CMAKE_VERSION}.tar.gz"
> cd "CMake-${CMAKE_VERSION}"
> cmake -H. -B_builds -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="`pwd`/_install" -DCMAKE_USE_SYSTEM_CURL=YES
> cmake --build _builds --target install
> export PATH="`pwd`/_install/bin:${PATH}"
> cd ..

• Check cmake version, python 3, HUNTER_ROOT and POLLY_ROOT environment variables:

> which cmake
/path/to/patched/cmake/version/_install/bin/cmake
> cmake --version
cmake version 3.0.0
> which python3
/path/to/python3
> echo $HUNTER_ROOT
/path/to/hunter/root/
> echo $POLLY_ROOT
/path/to/toolchains

• Check ios toolchain and install dependencies:

> ls $POLLY_ROOT/ios.cmake
/path/to/toolchains/ios.cmake
> cmake -H. -B_builds -DHUNTER_STATUS_DEBUG=ON -DCMAKE_TOOLCHAIN_FILE=$POLLY_ROOT/ios.cmake -GXcode

• Open project in Xcode and build/run on target you need:

> open _builds/Weather.xcodeproj