From fcbd4cf9d0aad168b24b5f3ac8bae76b7a616392 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Wed, 20 Apr 2022 11:45:01 +0000
Subject: [PATCH] Add generate and install rocksdb.pc file
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Installed rocksdb.pc allows easy detection of the presence in
system image rocksdb devel resources for other project which want
to use rocksdb.pc.

Signed-off-by: Tomasz Kłoczko <kloczek@githug.com>
---
 CMakeLists.txt | 12 ++++++++++++
 rocksdb.pc.in  | 12 ++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 rocksdb.pc.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5f8e213fb..eb582e110 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1125,6 +1125,11 @@ if(NOT WIN32 OR ROCKSDB_INSTALL_ON_WINDOWS)
 
   install(DIRECTORY "${PROJECT_SOURCE_DIR}/cmake/modules" COMPONENT devel DESTINATION ${package_config_destination})
 
+  configure_package_config_file(
+    ${CMAKE_CURRENT_LIST_DIR}/rocksdb.pc.in rocksdb.pc
+    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
+  )
+
   install(
     TARGETS ${ROCKSDB_STATIC_LIB}
     EXPORT RocksDBTargets
@@ -1159,6 +1164,13 @@ if(NOT WIN32 OR ROCKSDB_INSTALL_ON_WINDOWS)
     COMPONENT devel
     DESTINATION ${package_config_destination}
   )
+
+  install(
+    FILES
+    ${CMAKE_CURRENT_BINARY_DIR}/rocksdb.pc
+    COMPONENT devel
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
+  )
 endif()
 
 option(WITH_ALL_TESTS "Build all test, rather than a small subset" ON)
diff --git a/rocksdb.pc.in b/rocksdb.pc.in
new file mode 100644
index 000000000..b02815421
--- /dev/null
+++ b/rocksdb.pc.in
@@ -0,0 +1,12 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=${prefix}
+libdir=@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/include
+
+Name: @PROJECT_NAME@
+Description: @CMAKE_PROJECT_DESCRIPTION@
+URL: @CMAKE_PROJECT_HOMEPAGE_URL@
+Version: @PROJECT_VERSION@
+Cflags: -I${includedir}
+Libs: -L${libdir} -lrocksdb
+