Configure and install pkg-config file

Author: Zer0-One

CMakeLists.txt

@@ -66,10 +66,9 @@ target_compile_definitions(nvp
 # If we're on Linux, link against libbsd
 target_link_libraries(nvp PUBLIC $<$<PLATFORM_ID:Linux>:bsd>)
 
-install(
-    TARGETS nvp DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-)
+# Generate pkg-config file
+set(DEST_DIR ${CMAKE_INSTALL_PREFIX})
+configure_file(nvp.pc.in bin/nvp.pc @ONLY)
 
 function(build_test target)
     add_executable(${target} tests/${target}.c)
@@ -140,3 +139,13 @@ if(NVP_TEST)
         build_atf_test(nv_array_tests YES)
     endif()
 endif()
+
+install(
+    TARGETS nvp DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+)
+
+install(
+    FILES ${CMAKE_CURRENT_BINARY_DIR}/bin/nvp.pc
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
+)

README.md

@@ -5,15 +5,21 @@ A cross-platform userspace version of libnv ported from FreeBSD 12.
 libnv is a library that facilitates the creation of lists of name-value pairs,
 and the sending of those lists over sockets.
 
-To build with tests, run `cmake -DNVP_TEST=ON . && make`. To execute tests, run
-`make test`.
 
 # Dependencies
 
 - `libbsd`, which provides those BSD libc includes which differ from (or don't
   exist in) glibc.
 - `atf-c`, `atf-c++`, and `kyua` if you want to build and run the ATF tests.
 
+
+# Building
+
+- The default install prefix is /usr/local . For a different prefix, set `-DCMAKE_INSTALL_PREFIX=/new/prefix`
+- To build with tests, set `-DNVP_TEST=ON`
+- To make, run `make`, to execute tests, run `make test` and to install, run `make install`
+
+
 # License
 ```
 BSD 2-Clause License

nvp.pc.in

@@ -0,0 +1,11 @@
+prefix=@DEST_DIR@
+exec_prefix=${prefix}
+libdir=${prefix}/lib
+includedir=${prefix}/include
+
+Name: libnvp
+Description: A cross-platform userspace version of libnv ported from FreeBSD 12.
+Version: 1.0
+
+Libs: -L${libdir} -lnvp
+Cflags: -I${includedir}