Cmake link libmapnik c-CodePudding

I am unable to connect Mapnik via cmake to my application.

I tried to do like this:

cmake_minimum_required(VERSION 3.1)

project(MapnikTest)

set(MAPNIK_LIB "/usr/local/lib/libmapnik.so.3.1.0") dont work

#set(MAPNIK_LIB "/usr/local/lib/libmapnik.so") dont work

set(MAPNIK_INCLUDE_DIR "/usr/local/include/mapnik")  work

#find_package(mapnik REQUIRED) dont work

#find_package(Mapnik REQUIRED) dont work

include_directories(${MAPNIK_INCLUDE_DIR})

add_executable(${PROJECT_NAME} main.cpp)

target_link_libraries(${PROJECT_NAME} PRIVATE ${MAPNIK_LIB})

The thing is, I don't have mapnikConfig.cmake in /usr/local/bin/cmake

Can't connect the library directly. Include he sees. I edited already LD_LIBRARY_PATH it didn't help either.

/usr/bin/ld: CMakeFiles/MapnikTest.dir/main.cpp.o: in function `main':
main.cpp:(.text 0x3b): undefined reference to `mapnik::Map::Map(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
/usr/bin/ld: main.cpp:(.text 0xb8): undefined reference to `mapnik::load_map(mapnik::Map&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/usr/bin/ld: main.cpp:(.text 0x1b9): undefined reference to `void mapnik::save_to_file<mapnik::image<mapnik::rgba8_t> >(mapnik::image<mapnik::rgba8_t> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
/usr/bin/ld: CMakeFiles/MapnikTest.dir/main.cpp.o: in function `icu_66::UnicodeString::hashCode() const':
main.cpp:(.text._ZNK6icu_6613UnicodeString8hashCodeEv[_ZNK6icu_6613UnicodeString8hashCodeEv] 0x18): undefined reference to `icu_66::UnicodeString::doHashCode() const'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/MapnikTest.dir/build.make:104: MapnikTest] Error 1
make[1]: *** [CMakeFiles/Makefile2:95: CMakeFiles/MapnikTest.dir/all] Error 2
make: *** [Makefile:103: all] Error 2

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CodePudding user response：

Based on demo form Mapnik repo it should go like this:

cmake_minimum_required(VERSION 3.1)

project(MapnikTest)
find_package(mapnik REQUIRED)

add_executable(${PROJECT_NAME} main.cpp)
target_link_libraries(${PROJECT_NAME} PRIVATE mapnik::agg mapnik::mapnik)

Didn't test it, but should work. I can see library provides proper config.

CodePudding user response：

Find where you have mapnikConfig.cmake or mapnik-config.cmake and set mapnik_DIR to it. Like this:

cmake -Dmapnik_DIR="/path/to/config" ..

and it should be

find_package(mapnik REQUIRED)