Add installation and packaging targets

CMakeLists.txt

@@ -4,19 +4,63 @@ project("cpackexample" VERSION 0.1.0)
 
 FIND_PACKAGE(deal.II 9.5 REQUIRED
   HINTS ${DEAL_II_DIR} ../ ../../ $ENV{DEAL_II_DIR}
-  )
+)
 DEAL_II_INITIALIZE_CACHED_VARIABLES()
 
 # Uses the FindBoost module of CMake
 find_package(Boost 1.83 COMPONENTS filesystem REQUIRED)
 
 find_package(yaml-cpp 0.6 REQUIRED)
 
-add_library(cpackexamplelib filesystem/filesystem.cpp fem/fem.cpp flatset/flatset.cpp yamlParser/yamlParser.cpp)
+# Option for bonus task: allow building the library as shared
+option(CPACKEXAMPLE_BUILD_SHARED "Build cpackexamplelib as a shared library" OFF)
+
+if (CPACKEXAMPLE_BUILD_SHARED)
+    add_library(cpackexamplelib SHARED
+        filesystem/filesystem.cpp
+        fem/fem.cpp
+        flatset/flatset.cpp
+        yamlParser/yamlParser.cpp
+    )
+else()
+    add_library(cpackexamplelib STATIC
+        filesystem/filesystem.cpp
+        fem/fem.cpp
+        flatset/flatset.cpp
+        yamlParser/yamlParser.cpp
+    )
+endif()
+
 add_executable("${PROJECT_NAME}" main.cpp)
 
 target_link_libraries("${PROJECT_NAME}" cpackexamplelib)
 target_link_libraries(cpackexamplelib Boost::filesystem ${YAML_CPP_LIBRARIES})
 
 DEAL_II_SETUP_TARGET("${PROJECT_NAME}")
 DEAL_II_SETUP_TARGET(cpackexamplelib)
+
+# Install the executable into <prefix>/bin
+install(
+    TARGETS cpackexample
+    RUNTIME DESTINATION bin
+)
+
+# Install the library into <prefix>/lib
+install(
+    TARGETS cpackexamplelib
+    ARCHIVE DESTINATION lib      # static libraries (.a)
+    LIBRARY DESTINATION lib      # shared libraries (.so)
+    INCLUDES DESTINATION include/cpackexamplelib
+)
+
+# Install public headers into <prefix>/include/cpackexamplelib
+install(
+    FILES
+        fem/fem.hpp
+        filesystem/filesystem.hpp
+        flatset/flatset.hpp
+        yamlParser/yamlParser.hpp
+    DESTINATION include/cpackexamplelib
+)
+
+include(cmake/CPackConfig.cmake)

Dockerfile

@@ -1,28 +1,75 @@
-From ubuntu:24.04
+FROM ubuntu:24.04
 
-# Install a few dependencies
+# Install dependencies (incl. dpkg-dev for shlibdeps)
 RUN apt-get -qq update && \
     apt-get -qq -y install \
-        build-essential \
-        cmake \
-        git \
-        libboost-all-dev \
-        wget \
-        libdeal.ii-dev \
-        vim \
-        tree \
-        lintian \
-        unzip
-
-# Get, unpack, build, and install yaml-cpp        
-RUN mkdir software && cd software && \
-    wget https://github.com/jbeder/yaml-cpp/archive/refs/tags/yaml-cpp-0.6.3.zip && unzip yaml-cpp-0.6.3.zip && \
-    cd yaml-cpp-yaml-cpp-0.6.3 && mkdir build && cd build && \
-    cmake -DYAML_BUILD_SHARED_LIBS=ON .. && make -j4 && make install    
-
-# This is some strange Docker feature. Normally, you don't need to add /usr/local to these
-ENV LIBRARY_PATH $LIBRARY_PATH:/usr/local/lib/
-ENV LD_LIBRARY_PATH $LD_LIBRARY_PATH:/usr/local/lib/
-ENV PATH $PATH:/usr/local/bin/
-
-CMD ["/bin/bash"]
+    build-essential \
+    cmake \
+    git \
+    libboost-all-dev \
+    wget \
+    libdeal.ii-dev \
+    vim \
+    tree \
+    lintian \
+    unzip \
+    dpkg-dev && \
+    rm -rf /var/lib/apt/lists/*
+
+# Get, unpack, build, and install yaml-cpp (shared)
+RUN mkdir /software && cd /software && \
+    wget https://github.com/jbeder/yaml-cpp/archive/refs/tags/yaml-cpp-0.6.3.zip && \
+    unzip yaml-cpp-0.6.3.zip && \
+    cd yaml-cpp-yaml-cpp-0.6.3 && \
+    mkdir build && cd build && \
+    cmake -DYAML_BUILD_SHARED_LIBS=ON .. && \
+    make -j4 && \
+    make install
+
+# Make sure /usr/local is visible
+ENV LIBRARY_PATH=$LIBRARY_PATH:/usr/local/lib/
+ENV LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib/
+ENV PATH=$PATH:/usr/local/bin/
+
+# Script to configure, build (shared), and create packages automatically
+RUN cat > /usr/local/bin/build-and-package.sh << 'EOF'
+#!/bin/bash
+set -euo pipefail
+
+SRC_DIR=/mnt/cpack-exercise
+BUILD_DIR=$(mktemp -d /tmp/cpack-build-XXXXXX)
+INSTALL_PREFIX=/tmp/cpack-install
+OUT_DIR=${CPACK_OUTPUT_DIR:-$SRC_DIR/packages}
+
+echo "Using source directory: $SRC_DIR"
+echo "Using build directory:  $BUILD_DIR"
+echo "Using install prefix:   $INSTALL_PREFIX"
+echo "Using output directory: $OUT_DIR"
+
+mkdir -p "$OUT_DIR"
+
+# Configure: shared library + install prefix
+cmake -S "$SRC_DIR" -B "$BUILD_DIR" \
+    -DCPACKEXAMPLE_BUILD_SHARED=ON \
+    -DCMAKE_INSTALL_PREFIX="$INSTALL_PREFIX"
+
+# Build
+cmake --build "$BUILD_DIR" -- -j"$(nproc)"
+
+# Create packages (TGZ + DEB)
+cmake --build "$BUILD_DIR" --target package
+
+# Copy only the final packages to the mounted output directory
+cp "$BUILD_DIR"/cpackexample-*.tar.gz "$OUT_DIR"/
+cp "$BUILD_DIR"/cpackexample_*.deb "$OUT_DIR"/
+
+# Clean up temporary build and install dirs (container only)
+rm -rf "$BUILD_DIR" "$INSTALL_PREFIX"
+
+echo "Packages copied to: $OUT_DIR"
+EOF
+
+RUN chmod +x /usr/local/bin/build-and-package.sh
+
+# Default: run the automated build-and-package script
+CMD ["/usr/local/bin/build-and-package.sh"]

cmake/CPackConfig.cmake

@@ -0,0 +1,50 @@
+# Basic package information
+set(CPACK_PACKAGE_NAME "cpackexample")
+set(CPACK_PACKAGE_VENDOR "Nikhil / University Of Stuttgart")
+set(CPACK_PACKAGE_CONTACT "n.k.2449837@gmail.com")
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY
+    "Finite Element / Boost / YAML example packaged with CPack"
+)
+
+# Debian wants an extended description (not empty)
+set(CPACK_DEBIAN_PACKAGE_DESCRIPTION
+"Finite element demo application
+
+ This package contains a small FEM-based example using deal.II, Boost
+ and yaml-cpp, packaged with CMake and CPack for the SSE exercise."
+)
+
+# Version
+set(CPACK_PACKAGE_VERSION_MAJOR 0)
+set(CPACK_PACKAGE_VERSION_MINOR 1)
+set(CPACK_PACKAGE_VERSION_PATCH 0)
+set(CPACK_PACKAGE_VERSION
+    "${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}"
+)
+
+# Homepage / project URL (your fork)
+set(CPACK_PACKAGE_HOMEPAGE_URL
+    "https://github.com/Nikhil-4595/cpack-exercise-wt2526"
+)
+
+# Only create TGZ and DEB binaries
+set(CPACK_GENERATOR "TGZ;DEB")
+
+# Install into /usr so binary ends up in /usr/bin, etc.
+set(CPACK_PACKAGING_INSTALL_PREFIX "/usr")
+
+# Debian-specific fields
+# Lintian wants a 'phrase' (Name <email>) as maintainer
+set(CPACK_DEBIAN_PACKAGE_MAINTAINER "Nikhil <${CPACK_PACKAGE_CONTACT}>")
+set(CPACK_DEBIAN_PACKAGE_HOMEPAGE   "${CPACK_PACKAGE_HOMEPAGE_URL}")
+set(CPACK_DEBIAN_FILE_NAME DEB-DEFAULT)
+
+# Strip binaries in packages -> fixes 'unstripped-binary-or-object'
+set(CPACK_STRIP_FILES YES)
+
+# Let Debian tools detect shared-library dependencies
+# -> fixes 'undeclared-elf-prerequisites' and adds proper Depends:
+set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS YES)
+
+# Enable CPack
+include(CPack)