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Simplify the boilerplate code of CPM. #12

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Simplify the boilerplate code of CPM. #12

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19 changes: 19 additions & 0 deletions CPMSetup.cmake
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
#------------------------------------------------------------------------------
# Required CPM Setup - no need to modify - See: https://github.com/iauns/cpm
#------------------------------------------------------------------------------
set(CPM_DIR "${CMAKE_CURRENT_BINARY_DIR}/cpm_packages" CACHE TYPE STRING)
find_package(Git)
if(NOT GIT_FOUND)
message(FATAL_ERROR "CPM requires Git.")
endif()
if (NOT EXISTS ${CPM_DIR}/CPM.cmake)
message(STATUS "Cloning repo (https://github.com/iauns/cpm)")
execute_process(
COMMAND "${GIT_EXECUTABLE}" clone https://github.com/iauns/cpm ${CPM_DIR}
RESULT_VARIABLE error_code
OUTPUT_QUIET ERROR_QUIET)
if(error_code)
message(FATAL_ERROR "CPM failed to get the hash for HEAD")
endif()
endif()
include(${CPM_DIR}/CPM.cmake)
49 changes: 9 additions & 40 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -58,25 +58,7 @@ self-contained and will build as-is:
cmake_minimum_required(VERSION 2.8.7 FATAL_ERROR)
project(foo)

#------------------------------------------------------------------------------
# Required CPM Setup - no need to modify - See: https://github.com/iauns/cpm
#------------------------------------------------------------------------------
set(CPM_DIR "${CMAKE_CURRENT_BINARY_DIR}/cpm_packages" CACHE TYPE STRING)
find_package(Git)
if(NOT GIT_FOUND)
message(FATAL_ERROR "CPM requires Git.")
endif()
if (NOT EXISTS ${CPM_DIR}/CPM.cmake)
message(STATUS "Cloning repo (https://github.com/iauns/cpm)")
execute_process(
COMMAND "${GIT_EXECUTABLE}" clone https://github.com/iauns/cpm ${CPM_DIR}
RESULT_VARIABLE error_code
OUTPUT_QUIET ERROR_QUIET)
if(error_code)
message(FATAL_ERROR "CPM failed to get the hash for HEAD")
endif()
endif()
include(${CPM_DIR}/CPM.cmake)
include(CPMSetup.cmake) # download and initialize CPM

#------------------------------------------------------------------------------
# CPM Modules
Expand Down Expand Up @@ -137,29 +119,16 @@ Using CPM
Quick Setup
-----------

To use CPM in your C++ project, include the following at the top of your
CMakeLists.txt:
To use CPM in your C++ project, download
[`CPMSetup.cmake`](https://github.com/iaun/cpm/blob/master/CPMSetup.cmake)
to the root of your project:
```bash
wget https://github.com/iaun/cpm/blob/master/CPMSetup.cmake
```
and then paste the following code at the top of your `CMakeLists.txt`:

```cmake
#------------------------------------------------------------------------------
# Required CPM Setup - no need to modify - See: https://github.com/iauns/cpm
#------------------------------------------------------------------------------
set(CPM_DIR "${CMAKE_CURRENT_BINARY_DIR}/cpm-packages" CACHE TYPE STRING)
find_package(Git)
if(NOT GIT_FOUND)
message(FATAL_ERROR "CPM requires Git.")
endif()
if (NOT EXISTS ${CPM_DIR}/CPM.cmake)
message(STATUS "Cloning repo (https://github.com/iauns/cpm)")
execute_process(
COMMAND "${GIT_EXECUTABLE}" clone https://github.com/iauns/cpm ${CPM_DIR}
RESULT_VARIABLE error_code
OUTPUT_QUIET ERROR_QUIET)
if(error_code)
message(FATAL_ERROR "CPM failed to get the hash for HEAD")
endif()
endif()
include(${CPM_DIR}/CPM.cmake)
include(CPMSetup.cmake) # download and initialize CPM

#------------------------------------------------------------------------------
# CPM Modules
Expand Down