Introduction

ida-cmake provides a convenience CMake build script template for compiling IDA addons on Windows, Linux and macOS (Intel or Apple Silicon). It requires very minimal set up and little to zero knowledge of the IDA SDK build system and how to configure it (especially on MS Windows, which can be very tedious).

ida-cmake has been tested with the IDA SDK 7.2 and onwards.

Quick Start Guide

In few simple steps:

1. Clone ida-cmake to the IDA SDK installation folder
2. Export a new environment variable called IDASDK and have it point to the IDA SDK folder
3. Grab a template CMake build script from the plugins folder from this repo.

Continue reading if you want to learn more about ida-cmake.

There's also useful video on the All Things IDA YouTube channel that shows you have to use ida-cmake: https://youtu.be/P9nrKSPYaIM

Installation

Clone this project into the IDA SDK folder. The final folders layout should look like this:

<idasdk>
<idasdk>\ida-cmake
<idasdk>\plugins
<idasdk>\lib
<idasdk>\bin
etc.

Alternatively, if you have multiple IDA SDKs installed, it does not make sense to clone ida-cmake repeatedly into each SDK folder. In that case, just use symbolic links.

For example, on Windows:

mklink /j c:\idasdk82\ida-cmake c:\projects\ida-cmake
mklink /j c:\idasdk80\ida-cmake c:\projects\ida-cmake

Once installed, simply export an environment variable called IDASDK and make it point to the IDA SDK folder.

IDABIN

IDABIN, an optional environment variable, if specified, should point to IDA's installation location.

Since in most cases the IDA binaries are located in a non-writable path (Program Files for example), two cases are advised here:

1. %APPDATA%\Hex-Rays\IDA Pro:

set IDABIN=%APPDATA%\Hex-Rays\IDA Pro

(or export IDABIN=... on *nix platforms)

2. Or just don't specify the variable and let it compute to the default value <IDASDK>/bin.

Compiling IDA addons

Plugins, file loaders, processor modules will be referred to as addons.

In the CMakeLists.txt build script, you can specify the type of addon being compiled by simply providing its name:

• set(PLUGIN_NAME my_simple_plugin): specifies that this is a plugin.
• set(LOADER_NAME my_loader): specifies that this is a file loader module.
• set(PROCMOD_NAME my_procmod): specifies that this is a processor module.

In the following subsections, we describe how to configure ida-cmake for plugins, however one can substitute PLUGIN_ with LOADER_ or PROCMOD_ to achieve the same for other addon types.

Customizing your plugin information

To get started, simply copy the desired template plugin CMake build script from the plugins/ samples to your plugin source directory and edit it accordingly:

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(MyPluginProjectName)

include($ENV{IDASDK}/ida-cmake/idasdk.cmake)

set(PLUGIN_NAME          mysample)
set(PLUGIN_SOURCES       mysample.cpp)
set(PLUGIN_OUTPUT_NAME   mysample-output)

generate()

Specify the solution name with project(). This is relevant when you have more than one plugin in the same directory.

Here are all the supported addon variables:

• PLUGIN_NAME is the project name. It is also used as the binary name if the PLUGIN_OUTPUT_NAME is absent
• PLUGIN_SOURCES is a space separated list of source files that make up the plugin
• PLUGIN_OUTPUT_NAME is an optional variable that lets you override the binary file name. This is useful if you want to have your plugin load before other plugins (IDA sorts and loads plugins in alphabetical order)
• PLUGIN_LINK_LIBRARIES additional link libraries used by the plugin.
• PLUGIN_INCLUDE_DIRECTORIES additional include directories used by the plugin.
• PLUGIN_RUN_ARGS specify the default command line arguments to pass when you run your plugins from the IDE (only works with Visual Studio). If not specified, then IDA will run with a temporary database (-t switch).
• DISABLED_SOURCES is used to specify a list of source files that should be listed in the project but should not be compiled (they are meant to be used with #include for example).

Finally, call the generate macro.

Two or more plugins sharing the same source files

It is possible to have a single plugin folder describing two or more plugins (when plugins share the same source code for instance). To do that, check the ida-cmake/plugins/twoplugins folder.

In essence, all you have to do is something like the following:

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(TwoPlugins)

include($ENV{IDASDK}/ida-cmake/idasdk.cmake)

# Plugin 1
set(PLUGIN_NAME              mysample1)
set(PLUGIN_SOURCES           mysample1.cpp)
generate()

# Plugin 2
set(PLUGIN_NAME              mysample2)
set(PLUGIN_SOURCES           mysample2.cpp)
generate()

Generating project files

Now that all the prerequisit steps are configured, let's use CMake to generate our build scripts (using a generator of our choice).

Notes:

• Add the -DEA64=YES switch to CMake if you want to build for ida64.
• Obsolete: add the argument -DMAXSTR=<new_len> to change the default value of MAXSTR from 1024.

For ida

In your plugin source directory, type the following shell commands:

mkdir build
cd build
cmake ..

For ida64.exe

Just pass the -DEA64=YES switch:

mkdir build64
cd build64
cmake .. -DEA64=YES

On MS-Windows

• The default generator (CMake's -G switch) is Visual Studio.
• It might be required to pass the -A x64 switch

In the build folders, if the Visual Studio generator was used, then you will have a Visual Studio solution. Feel free to open the solution and build it from the IDE going forward.

Generating project files for multiple addons

To configure CMake for multiple addons existing in their own folders, just create a CMakeLists.txt file that includes the directories of the addons in question:

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(AllPlugins)

add_subdirectory(twoplugins)
add_subdirectory(sample)

Then create a build folder (as described in the previous steps):

mkdir build
cd build
cmake -A x64 ..

Now you have a project that contains all the aforementioned directories.

Please check the template CMake file located here: ida-cmake/plugins/CMakeLists.txt.

Generating project files for Linux/macOS

Nothing special is required. Just create the proper build folder and invoke CMake:

mkdir build
cmake ..

Specify the IDASDK and IDABIN per addon

Instead of specifying the IDASDK environment variable, it is also possible to pass it via the CMake command line switch: -DIDASDK=/path/to/idasdk. The same goes for IDABIN. Here's an example:

cd build
cmake .. -DIDASDK=</path/to/idasdk> -DIDABIN="%APPDATA%\Hex-Rays\IDA Pro" 

For this to work, your CMake build script should be able to include the needed bootstrap CMake script correctly (note the include):

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(mysample)

# Plugin 1
set(CMAKE_CXX_STANDARD 17)

include(${IDASDK}/ida-cmake/idasdk.cmake)

set(PLUGIN_NAME      mysample)
set(PLUGIN_SOURCES   mysample.cpp)
set(PLUGIN_RUN_ARGS  "-t -z10000") # Debug messages for the debugger

generate()

Please see sample_anysdk sample.

Building

After the project has been generated, the next step is to build the addon:

cmake --build . --config Debug

or:

cmake --build . --config Release

Manually building your addon

If you prefer to create your own executable or addon manually, then once you have included idasdk.cmake, you get these variables you can use:

• IDALIBPATH: Points to the IDA shared library path (ida.lib, etc.)
• IDALIBSUFFIX: Contains the IDA shared library suffix (win32: .lib, linux: .so, mac: .dylib)
• IDASLIBPATH: Points to the IDA static library path (pro.lib, etc.)
• IDALIB: Points to the IDA shared library (ida.lib, etc.)
• IDAPROLIB: Points to the IDA static library (pro.lib, etc.)
• IDAPROINCLUDE: Points to the IDA SDK include path
• IDAPROPLAT: Contains the IDA SDK platform (win32: NT, linux: LINUX, mac: MAC)
• IDAEA64: Defines "EA64=1" or not

Then you can just create an addon as such:

add_library(myplugin SHARED plugin1.cpp)
target_link_libraries(myplugin PRIVATE ${IDALIB})
target_include_directories(myplugin PRIVATE ${IDAPROINCLUDE})
target_compile_definitions(myplugin PRIVATE ${IDAPROPLAT}=1 ${IDAEA64})