Add install capabilities to top-level CMake config

CMakeLists.txt

@@ -240,7 +240,7 @@ ExternalProject_Add(
     scylla-rust-cpp-driver
     DOWNLOAD_COMMAND ""
     CONFIGURE_COMMAND ""
-    BUILD_COMMAND cargo build $<IF:$<CONFIG:Debug>,,--release>
+    BUILD_COMMAND ./build-cmake-compat.sh $<IF:$<CONFIG:Debug>,DEBUG,RELEASE> $<IF:$<BOOL:${CASS_BUILD_STATIC}>,STATIC,NO_STATIC>
     BINARY_DIR "${CMAKE_SOURCE_DIR}/scylla-rust-wrapper"
     INSTALL_COMMAND ""
     LOG_BUILD ON
@@ -250,11 +250,11 @@ add_library(scylla-cpp-driver SHARED IMPORTED)
 set_target_properties(scylla-cpp-driver PROPERTIES IMPORTED_NO_SONAME TRUE)
 set_property(TARGET scylla-cpp-driver APPEND PROPERTY IMPORTED_CONFIGURATIONS DEBUG)
 set_target_properties(scylla-cpp-driver PROPERTIES
-  IMPORTED_LOCATION_DEBUG "${CMAKE_SOURCE_DIR}/scylla-rust-wrapper/target/debug/libscylla_cpp_driver.so"
+  IMPORTED_LOCATION_DEBUG "${CMAKE_SOURCE_DIR}/scylla-rust-wrapper/target/debug/cmake-compat/libscylla-cpp-driver.so"
 )
 set_property(TARGET scylla-cpp-driver APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
 set_target_properties(scylla-cpp-driver PROPERTIES
-  IMPORTED_LOCATION_RELEASE "${CMAKE_SOURCE_DIR}/scylla-rust-wrapper/target/release/libscylla_cpp_driver.so"
+  IMPORTED_LOCATION_RELEASE "${CMAKE_SOURCE_DIR}/scylla-rust-wrapper/target/release/cmake-compat/libscylla-cpp-driver.so"
 )
 set_target_properties(scylla-cpp-driver PROPERTIES
   MAP_IMPORTED_CONFIG_MINSIZEREL Release
@@ -271,4 +271,34 @@ endif()
 
 if(CASS_BUILD_INTEGRATION_TESTS OR CASS_BUILD_TESTS)
   add_subdirectory(tests)
-endif()
+endif()
+
+#-------------------------------------
+# Installation
+#-------------------------------------
+
+# Determine if the library directory needs to be determined
+if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
+  if ("${CMAKE_SYSTEM_NAME}" MATCHES "Linux" AND ("${CMAKE_INSTALL_PREFIX}" STREQUAL "/usr" OR
+    "${CMAKE_INSTALL_PREFIX}" STREQUAL "/usr/local"))
+    if(EXISTS "/etc/debian_version")
+      set (CMAKE_INSTALL_LIBDIR "lib/${CMAKE_LIBRARY_ARCHITECTURE}")
+    elseif(EXISTS "/etc/redhat-release" OR EXISTS "/etc/fedora-release" OR
+        EXISTS "/etc/slackware-version" OR EXISTS "/etc/gentoo-release")
+      if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+        set (CMAKE_INSTALL_LIBDIR "lib64")
+      else()
+        set (CMAKE_INSTALL_LIBDIR "lib")
+      endif()
+    else()
+      set (CMAKE_INSTALL_LIBDIR "lib")
+    endif()
+  else()
+    set (CMAKE_INSTALL_LIBDIR "lib")
+  endif()
+endif()
+
+file(GLOB CASS_API_HEADER_FILES ${CASS_INCLUDE_DIR}/*.h)
+install(FILES ${CASS_API_HEADER_FILES} DESTINATION "include")
+
+install(DIRECTORY ${CMAKE_SOURCE_DIR}/scylla-rust-wrapper/target/$<IF:$<CONFIG:Debug>,debug,release>/cmake-compat/ DESTINATION ${CMAKE_INSTALL_LIBDIR})

scylla-rust-wrapper/build-cmake-compat.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+set -e
+
+# The version number should be in the third line
+# of Cargo.toml file (e.g. version = "0.0.1")
+VERSION_NUMBER=$(sed -n '3p' < Cargo.toml)
+REGEX="version = \"([0-9]+)\.([0-9]+)\.([0-9]+)\""
+if [[ $VERSION_NUMBER =~ $REGEX ]]
+then
+  MAJOR=${BASH_REMATCH[1]}
+  MINOR=${BASH_REMATCH[2]}
+  PATCH=${BASH_REMATCH[3]}
+else
+  echo "Could not parse the version number in Cargo.toml"
+  echo "Tried to parse a third line of Cargo.toml: $VERSION_NUMBER"
+  echo 'but it did not contain a valid version number (e.g. version = "0.0.1").'
+  exit 1
+fi
+
+COPY_STATIC=false
+
+if [[ $2 == "STATIC" ]]
+then
+  COPY_STATIC=true
+elif [[ $2 == "NO_STATIC" ]]
+then
+  COPY_STATIC=false
+else
+  echo 'Invalid static build configuration: $2 (only STATIC or NO_STATIC permitted)'
+  exit 1
+fi
+
+
+create_symlinks() {
+  rm -rf target/$1/cmake-compat/
+  mkdir target/$1/cmake-compat/
+
+  cp target/$1/libscylla_cpp_driver.so target/$1/cmake-compat/libscylla-cpp-driver.so.$MAJOR.$MINOR.$PATCH
+
+  if [[ "$COPY_STATIC" == true ]]
+  then
+    cp target/$1/libscylla_cpp_driver.a target/$1/cmake-compat/libscylla-cpp-driver_static.a
+  fi
+
+  ln -s libscylla-cpp-driver.so.$MAJOR.$MINOR.$PATCH target/$1/cmake-compat/libscylla-cpp-driver.so.$MAJOR
+  ln -s libscylla-cpp-driver.so.$MAJOR target/$1/cmake-compat/libscylla-cpp-driver.so
+}
+
+if [[ $1 == "DEBUG" ]]
+then
+  cargo build
+  create_symlinks "debug"
+elif [[ $1 == "RELEASE" ]]
+then
+  cargo build --release
+  create_symlinks "release"
+else
+  echo 'Invalid build mode: $1 (only DEBUG or RELEASE permitted)'
+  exit 1
+fi