folly: set shared libraries version

Summary:
This should make packaging folly easier, as it allows one to set the
.so version to denote ABI breaks. Specifically, we're looking to use this in
https://bugzilla.redhat.com/show_bug.cgi?id=1887621 to package folly in Fedora
and have the version match the tagged release version (i.e. treat every release
as ABI breaking).

Differential Revision: D24451669

fbshipit-source-id: f63be760c90567117f1ebbec37416c0d9d8a4736

CMakeLists.txt

@@ -38,7 +38,9 @@ set(CMAKE_MODULE_PATH
 
 # package information
 set(PACKAGE_NAME      "folly")
-set(PACKAGE_VERSION   "0.58.0-dev")
+if (NOT DEFINED PACKAGE_VERSION)
+  set(PACKAGE_VERSION   "0.58.0-dev")
+endif()
 set(PACKAGE_STRING    "${PACKAGE_NAME} ${PACKAGE_VERSION}")
 set(PACKAGE_TARNAME   "${PACKAGE_NAME}-${PACKAGE_VERSION}")
 set(PACKAGE_BUGREPORT "https://github.com/facebook/folly/issues")
@@ -378,6 +380,7 @@ option(PYTHON_EXTENSIONS
 add_library(folly
   $<TARGET_OBJECTS:folly_base>
 )
+set_property(TARGET folly PROPERTY VERSION ${PACKAGE_VERSION})
 apply_folly_compile_options_to_target(folly)
 target_compile_features(folly INTERFACE cxx_generic_lambdas)
 
@@ -388,6 +391,7 @@ add_library(folly_test_util
   ${FOLLY_DIR}/test/DeterministicSchedule.cpp
   ${FOLLY_DIR}/test/JsonTestUtil.cpp
 )
+set_property(TARGET folly_test_util PROPERTY VERSION ${PACKAGE_VERSION})
 target_link_libraries(folly_test_util
   PUBLIC
     ${BOOST_LIBRARIES}

folly/CMakeLists.txt

@@ -16,6 +16,7 @@ add_library(
     follybenchmark
     Benchmark.cpp
 )
+set_property(TARGET follybenchmark PROPERTY VERSION ${PACKAGE_VERSION})
 target_link_libraries(follybenchmark PUBLIC folly)
 apply_folly_compile_options_to_target(follybenchmark)
 install(

folly/experimental/exception_tracer/CMakeLists.txt

@@ -18,6 +18,7 @@ if (FOLLY_HAVE_ELF AND FOLLY_HAVE_DWARF)
     ExceptionTracer.cpp
     StackTrace.cpp
   )
+  set_property(TARGET folly_exception_tracer_base PROPERTY VERSION ${PACKAGE_VERSION})
   apply_folly_compile_options_to_target(folly_exception_tracer_base)
   target_link_libraries(
     folly_exception_tracer_base
@@ -29,6 +30,7 @@ if (FOLLY_HAVE_ELF AND FOLLY_HAVE_DWARF)
     ExceptionStackTraceLib.cpp
     ExceptionTracerLib.cpp
   )
+  set_property(TARGET folly_exception_tracer PROPERTY VERSION ${PACKAGE_VERSION})
   apply_folly_compile_options_to_target(folly_exception_tracer)
   target_link_libraries(
     folly_exception_tracer
@@ -39,6 +41,7 @@ if (FOLLY_HAVE_ELF AND FOLLY_HAVE_DWARF)
     folly_exception_counter
     ExceptionCounterLib.cpp
   )
+  set_property(TARGET folly_exception_counter PROPERTY VERSION ${PACKAGE_VERSION})
   apply_folly_compile_options_to_target(folly_exception_counter)
   target_link_libraries(
     folly_exception_counter