Improve cmake build system

.travis.yml

@@ -23,9 +23,13 @@ addons:
       - libusb-1.0-0-dev
       - libbz2-dev
       - libgnutls-dev
-      - libcurl4-gnutls-dev
       - gettext
 
+before_install:
+      # libcurl4-gnutls-dev should be installed after git clone because this package breaks git clone with following error:
+      # fatal: unable to access 'https://github.com/das-labor/neopg.git/': server certificate verification failed. CAfile: none CRLfile: none
+      - if [ "$TRAVIS_OS_NAME" == "linux" ]; then sudo apt-get install -y libcurl4-gnutls-dev; fi
+
 matrix:
   include:
     - compiler: gcc
@@ -276,6 +280,7 @@ install:
       brew link --force gettext
       # Already installed: cmake boost
     else
+      git config --global http.sslCAinfo /etc/ssl/certs/ca-certificates.crt # This is needed because libcurl4-gnutls-dev pkgs breaks git clone with a certificate error.
       git clone https://github.com/randombit/botan.git
       (cd botan;
       git checkout 2.3.0;

CMakeLists.txt

@@ -124,7 +124,7 @@ if(BUILD_DOC)
         message(FATAL_ERROR "Doxygen is needed to build the documentation.")
     endif()
 
-    set(DOXYFILE_IN ${CMAKE_CURRENT_SOURCE_DIR}/src/Doxyfile.in)
+    set(DOXYFILE_IN ${CMAKE_CURRENT_SOURCE_DIR}/neopg-tool/Doxyfile.in)
     set(DOXYFILE ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
 
     configure_file(${DOXYFILE_IN} ${DOXYFILE} @ONLY)
@@ -140,26 +140,23 @@ if(BUILD_DOC)
 endif()
 
 find_package(PkgConfig)
-pkg_check_modules(SQLITE3 REQUIRED sqlite3)
-pkg_check_modules(BOTAN2 REQUIRED botan-2)
-pkg_check_modules(LIBUSB REQUIRED libusb-1.0)
-pkg_check_modules(GNUTLS REQUIRED gnutls)
+pkg_check_modules(sqlite REQUIRED IMPORTED_TARGET sqlite3)
+pkg_check_modules(botan-2 REQUIRED IMPORTED_TARGET botan-2)
+pkg_check_modules(libusb-1.0 REQUIRED IMPORTED_TARGET libusb-1.0)
+pkg_check_modules(gnutls REQUIRED IMPORTED_TARGET gnutls)
 
-find_package(CURL REQUIRED)
+find_package(Boost COMPONENTS locale date_time REQUIRED)
 
-# Example how to test for header files and functions with cmake:
-# include(CheckIncludeFiles)
-# check_include_files(malloc.h HAVE_MALLOC_H)
-# include (CheckFunctionExists)
-# check_function_exists (log HAVE_LOG)
-# check_function_exists (exp HAVE_EXP)
+find_package(CURL REQUIRED)
+find_package(Threads)
 
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/neopg-tool/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h)
 
-add_subdirectory(${CMAKE_SOURCE_DIR}/legacy)
-add_subdirectory(${CMAKE_SOURCE_DIR}/lib)
-add_subdirectory(${CMAKE_SOURCE_DIR}/src)
+add_subdirectory(neopg)
+add_subdirectory(legacy)
+add_subdirectory(neopg-tool)
 
+install(EXPORT neopg NAMESPACE neopg:: DESTINATION lib/cmake/neopg)
 
 # get all project files
 file(GLOB_RECURSE ALL_SOURCE_FILES
@@ -197,12 +194,3 @@ add_custom_target(
   COMMAND ${CLANG_FORMAT} -style=file -i ${ALL_SOURCE_FILES}
 )
 
-
-#if(CMAKE_COMPILER_IS_GNUCXX)
-#  target_compile_options(foo
-#  PUBLIC -fno-...)
-#endif()
-#target_compile_features(foo
-#PUBLIC cxx_auto_type
-#PRIVATE
-#cxx_variadic_templates)

README.md

@@ -76,19 +76,30 @@ With all dependencies installed NeoPG can be build with CMake.
 
 ```bash
 $ git submodule update --init
-$ mkdir build
-$ cd build
-$ cmake ..
-$ make
-$ make test # opt: ARGS=-V or CTEST_OUTPUT_ON_FAILURE=1
+$ cmake -H. -Bbuild
+$ cmake --build build
+$ cmake --build build --target test # opt: ARGS=-V or CTEST_OUTPUT_ON_FAILURE=1
+```
+To install (default is /usr/local)
+
+```bash
+$ cmake --build build --target install
+```
+
+To change default installation, set cmake parameter `CMAKE_INSTALL_PREFIX` for example:
+
+```bash
+$ cmake -H. -Build -DCMAKE_INSTALL_PREFIX=<path>
 ```
 
 Select your compiler and language version by setting CXX and CXXSTD
 environment variables, e.g.:
 
 ```bash
-$ CXX=clang++-5 CXXSTD=14 cmake ..
+$ CXX=clang++-5 CXXSTD=14 cmake -H. -Bbuild
 ```
+or set cmake parameter `CMAKE_CXX_COMPILER` `CMAKE_CXX_STANDARD`
+
 
 ### Legacy support
 
@@ -120,18 +131,18 @@ Development builds have extra dependencies:
 To enable a debug build, set the CMAKE_BUILD_TYPE flag (default is `Release`):
 
 ```bash
-# cmake -DCMAKE_BUILD_TYPE=Debug -DCOVERAGE=ON ..
-# make coverage
+$ cmake -DCMAKE_BUILD_TYPE=Debug -DCOVERAGE=ON ..
+$ cmake --build build --target coverage
 ```
 
 Other targets:
 
 ```
-$ make pretty        # Run clang-format on all source files
-$ make lint          # Run cppcheck
-$ make coverage      # Just coverage.info for codecov.io
-$ make coverage-html # Local HTML report
-$ make coverage-data # Cobertura XML report
+$ cmake --build build --target pretty        # Run clang-format on all source files
+$ cmake --build build --target lint          # Run cppcheck
+$ cmake --build build --target coverage      # Just coverage.info for codecov.io
+$ cmake --build build --target coverage-html # Local HTML report
+$ cmake --build build --target coverage-data # Cobertura XML report
 ```
 
 ## TODO
@@ -176,9 +187,8 @@ $ sudo dnf install -y \
 
 # Clone repo and build
 $ git clone --recursive [email protected]:das-labor/neopg.git
-$ cd neopg/build
-$ cmake ..
-$ make
+$ cmake -Hneopg -Bneopg/build
+$ cmake --build neopg/build
 ```
 
 ### macOS
@@ -202,9 +212,8 @@ Build it!
 ```
 # Clone repo and build
 $ git clone --recursive [email protected]:das-labor/neopg.git
-$ cd neopg/build
-$ cmake ..
-$ make
+$ cmake -Hneopg -Bneopg/build
+$ cmake --build neopg/build
 ```
 
 Have fun!