This is a DEMO repository with examples of using the libsecp256k1 library in downstream projects with CMake.

Source code is borrowed from https://github.com/bitcoin-core/secp256k1/tree/master/examples directly.

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There are multiple options to use the libsecp256k1 library in your project:

• install it into your system,
• have its source code as a subtree in your project's source tree,
• use the FetchContent module.

Installed library

Switch to the "main" branch of this repository.

To build a binary, use commands as follows:

cmake -B build
cmake --build build

If the secp256k1 library has been installed in a non-standard path, add its installation prefix to CMAKE_PREFIX_PATH. For example:

cmake -B build -DCMAKE_PREFIX_PATH=/home/username/custom_lib
cmake --build build

Library in a subtree

Switch to the "subtree" branch of this repository.

dir=$(mktemp -d)
cmake -B build -DCMAKE_INSTALL_PREFIX=$dir
cmake --build build --target install
tree $dir
$dir/bin/secp256k1-example

Using FetchContent module

Switch to the "fetch" branch of this repository.

dir=$(mktemp -d)
cmake -B build -DCMAKE_INSTALL_PREFIX=$dir
cmake --build build --target install
tree $dir
$dir/bin/secp256k1-example