mirror of
https://github.com/ttroy50/cmake-examples.git
synced 2025-12-18 12:14:36 +03:00
fixes for asciidoc
This commit is contained in:
107
01-basic/A-hello-cmake/README.adoc
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107
01-basic/A-hello-cmake/README.adoc
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@@ -0,0 +1,107 @@
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:toc:
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:toc-placement!:
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||||
|
||||
toc::[]
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||||
|
||||
[[hello-cmake]]
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||||
Hello CMake
|
||||
-----------
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||||
|
||||
Shows a very basic hello world example.
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||||
|
||||
[[concepts]]
|
||||
Concepts
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||||
~~~~~~~~
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||||
|
||||
[[minimum-cmake-version]]
|
||||
Minimum CMake version
|
||||
^^^^^^^^^^^^^^^^^^^^^
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||||
|
||||
[source,cmake]
|
||||
|
||||
When creating a project using CMake, you can specify the minimum version
|
||||
of CMake that is supported.
|
||||
|
||||
----
|
||||
cmake_minimum_required(VERSION 2.6)
|
||||
----
|
||||
|
||||
[[projects]]
|
||||
Projects
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||||
^^^^^^^^
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||||
|
||||
A CMake build can include a project name to make referencing certain
|
||||
variables easier when using multiple projects.
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||||
|
||||
[source,cmake]
|
||||
----
|
||||
project (hello_cmake)
|
||||
----
|
||||
|
||||
[[creating-an-executable]]
|
||||
Creating an Executable
|
||||
^^^^^^^^^^^^^^^^^^^^^^
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||||
|
||||
The +add_executable()+ command specifies that an executable should be
|
||||
build from the specified source files, in this example main.cpp. The
|
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first argument to the +add_executable()+ function is the name of the
|
||||
executable to be built, and the second argument is the list of source files to compile.
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||||
|
||||
[source,cmake]
|
||||
----
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||||
add_executable(hello_cmake main.cpp)
|
||||
----
|
||||
|
||||
|
||||
[NOTE]
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||||
====
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||||
A shorthand that some people use is to have the project name and
|
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executable name the same. This allows you to specify the CMakeLists.txt
|
||||
as follows,
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||||
|
||||
[source,cmake]
|
||||
----
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||||
cmake_minimum_required(VERSION 2.6)
|
||||
project (hello_cmake)
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||||
add_executable(${PROJECT_NAME} main.cpp)
|
||||
----
|
||||
|
||||
In this example, the +project()+ function, will create a variable
|
||||
+${PROJECT_NAME}+ with the value hello_cmake. This can then be passed to
|
||||
the +add_executable()+ function to output a 'hello_cmake' executable.
|
||||
====
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||||
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||||
[[building-the-example]]
|
||||
Building the Example
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~~~~~~~~~~~~~~~~~~~~
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||||
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||||
[source,bash]
|
||||
----
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||||
$ mkdir build
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$ cd build
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$ cmake ..
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-- The C compiler identification is GNU 4.8.4
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-- The CXX compiler identification is GNU 4.8.4
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-- Check for working C compiler: /usr/bin/cc
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||||
-- Check for working C compiler: /usr/bin/cc -- works
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||||
-- Detecting C compiler ABI info
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||||
-- Detecting C compiler ABI info - done
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||||
-- Check for working CXX compiler: /usr/bin/c++
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||||
-- Check for working CXX compiler: /usr/bin/c++ -- works
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||||
-- Detecting CXX compiler ABI info
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||||
-- Detecting CXX compiler ABI info - done
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||||
-- Configuring done
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||||
-- Generating done
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||||
-- Build files have been written to: /workspace/cmake-examples/01-basic/hello_cmake/build
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||||
|
||||
$ make
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||||
Scanning dependencies of target hello_cmake
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||||
[100%] Building CXX object CMakeFiles/hello_cmake.dir/hello_cmake.cpp.o
|
||||
Linking CXX executable hello_cmake
|
||||
[100%] Built target hello_cmake
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||||
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||||
$ ./hello_cmake
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Hello CMake!
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||||
----
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||||
168
01-basic/B-hello-headers/README.adoc
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168
01-basic/B-hello-headers/README.adoc
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@@ -0,0 +1,168 @@
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:toc:
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||||
:toc-placement!:
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||||
toc::[]
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||||
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||||
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||||
[[hello-cmake]]
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||||
Hello CMake
|
||||
-----------
|
||||
|
||||
Shows a hello world example, which uses a different folder for source and include
|
||||
files.
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||||
|
||||
[[concepts]]
|
||||
Concepts
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||||
~~~~~~~~
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||||
|
||||
[[directory-paths]]
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||||
Directory Paths
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||||
^^^^^^^^^^^^^^^
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||||
|
||||
CMake syntax specifies a number of https://cmake.org/Wiki/CMake_Useful_Variables[variables]
|
||||
which can be used to help find useful directories in your project or source tree.
|
||||
Some of these include:
|
||||
|
||||
[cols=",",options="header",]
|
||||
|=======================================================================
|
||||
|Variable |Info
|
||||
|CMAKE_SOURCE_DIR |The root source directory
|
||||
|
||||
|CMAKE_CURRENT_SOURCE_DIR |The current source directory if using
|
||||
sub-projects and directories
|
||||
|
||||
|PROJECT_SOURCE_DIR |The source director of the current cmake project.
|
||||
|
||||
|CMAKE_BINARY_DIR |The root binary / build directory. This is the
|
||||
directory you run the cmake command from
|
||||
|
||||
|CMAKE_CURRENT_BINARY_DIR |The build directory you are currently in.
|
||||
|
||||
|PROJECT_BINARY_DIR |The build directory for the current project.
|
||||
|=======================================================================
|
||||
|
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[[including-directories]]
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||||
Including Directories
|
||||
^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
When you have different include folders, you can make your compiler aware of them using the
|
||||
+include_directories()+ function. This will add these directories to the
|
||||
compiler with the -I flag e.g. `-I/directory/path`
|
||||
|
||||
[source,cmake]
|
||||
----
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||||
include_directories(
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${PROJECT_SOURCE_DIR}/inc
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||||
)
|
||||
----
|
||||
|
||||
|
||||
|
||||
[[setting-source-files]]
|
||||
Source Files Variable
|
||||
^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
Creating a variable which includes the source files allows you to be
|
||||
clearer about these files and easily add them to multiple commands, for example,
|
||||
the +add_executable()+ function.
|
||||
|
||||
[source,cmake]
|
||||
----
|
||||
# Create a sources variable with a link to all cpp files to compile
|
||||
set(SOURCES
|
||||
src/Hello.cpp
|
||||
src/main.cpp
|
||||
)
|
||||
|
||||
add_executable(${PROJECT_NAME} ${SOURCES})
|
||||
----
|
||||
|
||||
[NOTE]
|
||||
====
|
||||
An alternative to setting specific file names in the +SOURCES+ variable is
|
||||
to use a GLOB command to find files using wildcard pattern matching.
|
||||
|
||||
|
||||
[source,cmake]
|
||||
----
|
||||
file(GLOB SOURCES "src/*.cpp")
|
||||
----
|
||||
====
|
||||
|
||||
[[building-the-example]]
|
||||
Building the Example
|
||||
~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
[source,bash]
|
||||
----
|
||||
$ mkdir build
|
||||
|
||||
$ cd build
|
||||
|
||||
$ cmake ..
|
||||
-- The C compiler identification is GNU 4.8.4
|
||||
-- The CXX compiler identification is GNU 4.8.4
|
||||
-- Check for working C compiler: /usr/bin/cc
|
||||
-- Check for working C compiler: /usr/bin/cc -- works
|
||||
-- Detecting C compiler ABI info
|
||||
-- Detecting C compiler ABI info - done
|
||||
-- Check for working CXX compiler: /usr/bin/c++
|
||||
-- Check for working CXX compiler: /usr/bin/c++ -- works
|
||||
-- Detecting CXX compiler ABI info
|
||||
-- Detecting CXX compiler ABI info - done
|
||||
-- Configuring done
|
||||
-- Generating done
|
||||
-- Build files have been written to: /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build
|
||||
|
||||
$ make
|
||||
Scanning dependencies of target hello_headers
|
||||
[ 50%] Building CXX object CMakeFiles/hello_headers.dir/src/Hello.cpp.o
|
||||
[100%] Building CXX object CMakeFiles/hello_headers.dir/src/main.cpp.o
|
||||
Linking CXX executable hello_headers
|
||||
[100%] Built target hello_headers
|
||||
|
||||
$ ./hello_headers
|
||||
Hello Headers!
|
||||
----
|
||||
|
||||
[[verbose-output]]
|
||||
Verbose Output
|
||||
^^^^^^^^^^^^^^
|
||||
|
||||
In the previous examples, when running the make command the output only
|
||||
shows the status of the build. To see the full output for debugging
|
||||
purposes you can add +VERBOSE=1+ flag when running make.
|
||||
|
||||
The VERBOSE output is show below, and a examination of the output shows
|
||||
the include directories being added to the c++ compiler command.
|
||||
|
||||
[source,bash]
|
||||
----
|
||||
$ make clean
|
||||
|
||||
$ make VERBOSE=1
|
||||
/usr/bin/cmake -H/home/matrim/workspace/cmake-examples/01-basic/hello_headers -B/home/matrim/workspace/cmake-examples/01-basic/hello_headers/build --check-build-system CMakeFiles/Makefile.cmake 0
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||||
/usr/bin/cmake -E cmake_progress_start /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build/CMakeFiles /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build/CMakeFiles/progress.marks
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||||
make -f CMakeFiles/Makefile2 all
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||||
make[1]: Entering directory `/home/matrim/workspace/cmake-examples/01-basic/hello_headers/build'
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||||
make -f CMakeFiles/hello_headers.dir/build.make CMakeFiles/hello_headers.dir/depend
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||||
make[2]: Entering directory `/home/matrim/workspace/cmake-examples/01-basic/hello_headers/build'
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||||
cd /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/matrim/workspace/cmake-examples/01-basic/hello_headers /home/matrim/workspace/cmake-examples/01-basic/hello_headers /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build/CMakeFiles/hello_headers.dir/DependInfo.cmake --color=
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make[2]: Leaving directory `/home/matrim/workspace/cmake-examples/01-basic/hello_headers/build'
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make -f CMakeFiles/hello_headers.dir/build.make CMakeFiles/hello_headers.dir/build
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make[2]: Entering directory `/home/matrim/workspace/cmake-examples/01-basic/hello_headers/build'
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||||
/usr/bin/cmake -E cmake_progress_report /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build/CMakeFiles 1
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[ 50%] Building CXX object CMakeFiles/hello_headers.dir/src/Hello.cpp.o
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||||
/usr/bin/c++ -I/home/matrim/workspace/cmake-examples/01-basic/hello_headers/inc -o CMakeFiles/hello_headers.dir/src/Hello.cpp.o -c /home/matrim/workspace/cmake-examples/01-basic/hello_headers/src/Hello.cpp
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||||
/usr/bin/cmake -E cmake_progress_report /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build/CMakeFiles 2
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[100%] Building CXX object CMakeFiles/hello_headers.dir/src/main.cpp.o
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||||
/usr/bin/c++ -I/home/matrim/workspace/cmake-examples/01-basic/hello_headers/inc -o CMakeFiles/hello_headers.dir/src/main.cpp.o -c /home/matrim/workspace/cmake-examples/01-basic/hello_headers/src/main.cpp
|
||||
Linking CXX executable hello_headers
|
||||
/usr/bin/cmake -E cmake_link_script CMakeFiles/hello_headers.dir/link.txt --verbose=1
|
||||
/usr/bin/c++ CMakeFiles/hello_headers.dir/src/Hello.cpp.o CMakeFiles/hello_headers.dir/src/main.cpp.o -o hello_headers -rdynamic
|
||||
make[2]: Leaving directory `/home/matrim/workspace/cmake-examples/01-basic/hello_headers/build'
|
||||
/usr/bin/cmake -E cmake_progress_report /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build/CMakeFiles 1 2
|
||||
[100%] Built target hello_headers
|
||||
make[1]: Leaving directory `/home/matrim/workspace/cmake-examples/01-basic/hello_headers/build'
|
||||
/usr/bin/cmake -E cmake_progress_start /home/matrim/workspace/cmake-examples/01-basic/hello_headers/build/CMakeFiles 0
|
||||
----
|
||||
1
01-basic/C-static-library/README.adoc
Normal file
1
01-basic/C-static-library/README.adoc
Normal file
@@ -0,0 +1 @@
|
||||
|
||||
1
01-basic/D-shared-library/README.adoc
Normal file
1
01-basic/D-shared-library/README.adoc
Normal file
@@ -0,0 +1 @@
|
||||
|
||||
@@ -1,3 +1,8 @@
|
||||
:toc:
|
||||
:toc-placement!:
|
||||
|
||||
toc::[]
|
||||
|
||||
[[static-analysis]]
|
||||
Static Analysis
|
||||
---------------
|
||||
@@ -20,4 +25,3 @@ analysis tool. However standalone tools also exist.
|
||||
The examples here include using the following tools:
|
||||
|
||||
* http://cppcheck.sourceforge.net/[CppCheck]
|
||||
|
||||
|
||||
@@ -1,12 +1,21 @@
|
||||
|
||||
:toc:
|
||||
:toc-placement!:
|
||||
|
||||
toc::[]
|
||||
|
||||
[[cppcheck-static-analysis]]
|
||||
CppCheck Static Analysis
|
||||
------------------------
|
||||
|
||||
This example is for calling the
|
||||
This example shows how to call the
|
||||
http://cppcheck.sourceforge.net/[CppCheck] tool to do static analysis.
|
||||
|
||||
It shows how to add cppcheck with a target for each sub-projects and
|
||||
also how to generate an overall "make analysis" target to do static
|
||||
It includes code to
|
||||
|
||||
* Find the cppcheck binary
|
||||
* Add cppcheck with a target for each sub-projects
|
||||
* Generate an overall `make analysis` target to do static
|
||||
analysis on all sub-projects.
|
||||
|
||||
[[requirements]]
|
||||
@@ -33,19 +42,23 @@ Adding Custom Package Modules
|
||||
Adding a custom module
|
||||
++++++++++++++++++++++
|
||||
|
||||
The cmake/modules/FindCppCheck.cmake file contains the code to find and
|
||||
add variables for a custom package module. Custom modules can be used to
|
||||
include::cmake/modules/FindCppCheck.cmake
|
||||
|
||||
The `cmake/modules/FindCppCheck.cmake` file contains the code to initialise a
|
||||
custom package module. Custom modules can be used to
|
||||
find programs, libraries and header files to include in your program.
|
||||
|
||||
[source,cmake]
|
||||
The following is a breakdown of the file:
|
||||
|
||||
[source,cmake,numbered]
|
||||
----
|
||||
find_program(CPPCHECK_BIN NAMES cppcheck)
|
||||
----
|
||||
|
||||
Search the path for the program "cppcheck" and store the result in the
|
||||
CPPCHECK_BIN variable
|
||||
Search the path for the cppcheck binary. Once found store the result in the
|
||||
+CPPCHECK_BIN+ variable
|
||||
|
||||
[source,cmake]
|
||||
[source,cmake,numbered]
|
||||
----
|
||||
set (CPPCHECK_THREADS "-j 4" CACHE STRING "The -j argument to have cppcheck use multiple threads / cores")
|
||||
|
||||
@@ -58,14 +71,14 @@ Set some custom arguments that can be later passed to cppcheck.
|
||||
----
|
||||
include(FindPackageHandleStandardArgs)
|
||||
FIND_PACKAGE_HANDLE_STANDARD_ARGS(
|
||||
CPPCHECK
|
||||
DEFAULT_MSG
|
||||
CPPCHECK
|
||||
DEFAULT_MSG
|
||||
CPPCHECK_BIN
|
||||
CPPCHECK_THREADS
|
||||
CPPCHECK_ARG)
|
||||
|
||||
mark_as_advanced(
|
||||
CPPCHECK_BIN
|
||||
CPPCHECK_BIN
|
||||
CPPCHECK_THREADS
|
||||
CPPCHECK_ARG)
|
||||
----
|
||||
@@ -84,7 +97,7 @@ set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules
|
||||
${CMAKE_MODULE_PATH})
|
||||
----
|
||||
|
||||
The $\{CMAKE_MODULE_PATH} points towards a folder which contains custom
|
||||
The variable +${CMAKE_MODULE_PATH}+ points towards a folder which contains custom
|
||||
cmake modules.
|
||||
|
||||
To then add the package module you can call
|
||||
@@ -111,7 +124,7 @@ set(ALL_ANALYSIS_TARGETS "${ALL_ANALYSIS_TARGETS}" PARENT_SCOPE)
|
||||
add_analysis macro
|
||||
^^^^^^^^^^^^^^^^^^
|
||||
|
||||
The add_analysis macro in cmake/analysis.cmake is the core idea for this
|
||||
The +add_analysis()+ macro in `cmake/analysis.cmake` is the core idea for this
|
||||
example. If cppcheck is available then a list of arguments are compiled
|
||||
and added to a custom command that calls cppcheck on the sources. These
|
||||
are then added to a custom target.
|
||||
@@ -124,7 +137,7 @@ foreach(dir ${dirs})
|
||||
endforeach()
|
||||
----
|
||||
|
||||
Find the include files from and calls to include_directories() in the
|
||||
Find the include files from and calls to +include_directories()+ in the
|
||||
same project.
|
||||
|
||||
[source,cmake]
|
||||
@@ -134,19 +147,19 @@ set(ALL_ANALYSIS_TARGETS "${ALL_ANALYSIS_TARGETS}" PARENT_SCOPE)
|
||||
----
|
||||
|
||||
Export the target name into a variable that can later be used to add a
|
||||
global "make analysis" target.
|
||||
global `make analysis` target.
|
||||
|
||||
[source,cmake]
|
||||
----
|
||||
if (${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VESION} GREATER 2.7)
|
||||
separate_arguments(tmp_args UNIX_COMMAND ${CPPCHECK_ARG})
|
||||
else ()
|
||||
# cmake 2.6 has different arguments
|
||||
string(REPLACE " " ";" tmp_args ${CPPCHECK_ARG})
|
||||
# cmake 2.6 has different arguments
|
||||
string(REPLACE " " ";" tmp_args ${CPPCHECK_ARG})
|
||||
endif ()
|
||||
----
|
||||
|
||||
Change the CPPCHECK_ARG so that the can be added to command correctly in
|
||||
Change the +CPPCHECK_ARG+ so that the can be added to command correctly in
|
||||
the custom command.
|
||||
|
||||
[source,cmake]
|
||||
@@ -174,7 +187,7 @@ you have provided. The sources that are analysed come from a _sources
|
||||
variable. This should be the name of the variable which holds your list
|
||||
of source files.
|
||||
|
||||
To call the add_analysis marco add the following to your projects
|
||||
To call the +add_analysis()+ marco add the following to your projects
|
||||
CMakeLists.txt file:
|
||||
|
||||
[source,cmake]
|
||||
@@ -188,20 +201,20 @@ Creating a target to call other targets
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
In the root CMakeLists.txt a custom target is created, which will call
|
||||
all other analysis targets. This allows you to call "make analysis" and
|
||||
all other analysis targets. This allows you to call `make analysis` and
|
||||
scan all sub projects.
|
||||
|
||||
To achieve this 2 things should be added to the root CMakeLists.txt
|
||||
|
||||
First add an empty variable ALL_ANALYSIS_TARGETS before calling your
|
||||
add_subdirectories() function.
|
||||
First add an empty variable +ALL_ANALYSIS_TARGETS+ before calling your
|
||||
+add_subdirectories()+ function.
|
||||
|
||||
[source,cmake]
|
||||
----
|
||||
set (ALL_ANALYSIS_TARGETS)
|
||||
----
|
||||
|
||||
Second add the following after your add_subdirectories() call.
|
||||
Second add the following after your +add_subdirectories()+ call.
|
||||
|
||||
[source,cmake]
|
||||
----
|
||||
@@ -236,7 +249,7 @@ $ cmake ..
|
||||
-- Check for working CXX compiler: /usr/bin/c++ -- works
|
||||
-- Detecting CXX compiler ABI info
|
||||
-- Detecting CXX compiler ABI info - done
|
||||
-- Found CPPCHECK: /usr/bin/cppcheck
|
||||
-- Found CPPCHECK: /usr/bin/cppcheck
|
||||
adding cppcheck analysys target for subproject1
|
||||
adding cppcheck analysys target for subproject2
|
||||
analysis analysis targets are subproject1_analysis;subproject2_analysis
|
||||
@@ -244,7 +257,7 @@ analysis analysis targets are subproject1_analysis;subproject2_analysis
|
||||
-- Generating done
|
||||
-- Build files have been written to: /home/matrim/workspace/cmake-examples/04-static-analysis/cppcheck/build
|
||||
|
||||
$ make analysis
|
||||
$ make analysis
|
||||
Scanning dependencies of target subproject1_analysis
|
||||
Running cppcheck: subproject1
|
||||
Checking main1.cpp...
|
||||
@@ -277,8 +290,8 @@ main2.cpp includes an out-of-bounds error which shows the error.
|
||||
------------------------------------------------------------------------------------
|
||||
|
||||
By default cppcheck only prints warnings and exits with a successful
|
||||
exit code. If the $\{CPPCHECK_ARG} variable is set with
|
||||
"--error-exitcode=1", the make analysis will finish early as follows.
|
||||
exit code. If the +${CPPCHECK_ARG}+ variable is set with
|
||||
`--error-exitcode=1`, the make analysis will finish early as follows.
|
||||
|
||||
[source,bash]
|
||||
----
|
||||
@@ -312,8 +325,8 @@ sub folders, such as below:
|
||||
│ │ │ ├── main.cpp
|
||||
------------------------------
|
||||
|
||||
You must add the following to the src/CMakeLists.txt file to correctly
|
||||
generate the "make analysis" target
|
||||
You must add the following to the `src/CMakeLists.txt` file to correctly
|
||||
generate the `make analysis` target
|
||||
|
||||
[source,cmake]
|
||||
----
|
||||
|
||||
@@ -1,3 +1,8 @@
|
||||
:toc:
|
||||
:toc-placement!:
|
||||
|
||||
toc::[]
|
||||
|
||||
[[cmake-examples]]
|
||||
cmake-examples
|
||||
--------------
|
||||
@@ -31,4 +36,3 @@ Some specific examples may require other tools including:
|
||||
* boost `$ sudo apt-get libboost-all-dev`
|
||||
* protobuf `$ sudo apt-get install libprotobuf-dev`
|
||||
* cppcheck `$ sudo apt-get install cppcheck`
|
||||
|
||||
|
||||
Reference in New Issue
Block a user