Package: libarmadillo-dev
Version: 14.2.3+dfsg-1
I am using Debian-13 trixie.
here is a minimal sample
CMakeLists.txt
'''
cmake_minimum_required(VERSION 3.15)
set(APP_NAME armatest)
project(${APP_NAME})
set(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/bin)
set(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/lib)
# https://cmake.org/cmake/help/latest/module/FindArmadillo.html
find_package(Armadillo CONFIG REQUIRED)
target_include_directories(armatest PRIVATE ${ARMADILLO_INCLUDE_DIRS})
target_link_libraries(armatest PRIVATE ${ARMADILLO_LIBRARIES} openblas)
add_executable(armatest armatest.cpp)
'''
armatest.cpp
'''
#include <armadillo>
#include <iostream>
int main() {
arma::Mat<double> mat = arma : Mat<double>(4, 4, arma::randu);
std::cout << mat;
}
'''
put CMakeLists.txt and armatest.cpp in the same folder, run cmake
then cmake would report Armadillo_CONFIG.cmake not found
