--- CMakeLists.txt.orig	2024-05-21 19:36:39 UTC
+++ CMakeLists.txt
@@ -53,8 +53,10 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
   add_definitions(-D_HAS_EXCEPTIONS=0)
 
   # Disable RTTI.
-  string(REGEX REPLACE "/GR" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /GR-")
+  if (NOT CMAKE_SYSTEM_NAME MATCHES "FreeBSD") # devel/folly requires RTTI info, see https://github.com/facebook/folly/issues/1606
+    string(REGEX REPLACE "/GR" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /GR-")
+  endif()
 else(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
   # Use -Wall for clang and gcc.
   if(NOT CMAKE_CXX_FLAGS MATCHES "-Wall")
@@ -83,8 +85,10 @@ else(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions")
 
   # Disable RTTI.
-  string(REGEX REPLACE "-frtti" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
+  if (NOT CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
+    string(REGEX REPLACE "-frtti" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
+  endif()
 endif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
 
 # BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to make
@@ -248,8 +252,7 @@ configure_file(
   "snappy-stubs-public.h.in"
   "${PROJECT_BINARY_DIR}/snappy-stubs-public.h")
 
-add_library(snappy "")
-target_sources(snappy
+set(SNAPPY_SRCS
   PRIVATE
     "snappy-internal.h"
     "snappy-stubs-internal.h"
@@ -270,20 +273,34 @@ target_sources(snappy
     $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/snappy-stubs-public.h>
     $<INSTALL_INTERFACE:include/snappy-stubs-public.h>
 )
-target_include_directories(snappy
+set(SNAPPY_INCS
   PUBLIC
     $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}>
     $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
     $<INSTALL_INTERFACE:include>
 )
+add_library(snappy SHARED)
+target_sources(snappy ${SNAPPY_SRCS})
+target_include_directories(snappy ${SNAPPY_INCS})
 set_target_properties(snappy
   PROPERTIES VERSION ${PROJECT_VERSION} SOVERSION ${PROJECT_VERSION_MAJOR})
 
 target_compile_definitions(snappy PRIVATE -DHAVE_CONFIG_H)
-if(BUILD_SHARED_LIBS)
-  set_target_properties(snappy PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS ON)
-endif(BUILD_SHARED_LIBS)
+set_target_properties(snappy PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS ON)
+add_library(snappy-static STATIC)
+target_sources(snappy-static ${SNAPPY_SRCS})
+target_include_directories(snappy-static ${SNAPPY_INCS})
+set_target_properties(snappy-static
+  PROPERTIES VERSION ${PROJECT_VERSION} SOVERSION ${PROJECT_VERSION_MAJOR})
 
+target_compile_definitions(snappy-static PRIVATE -DHAVE_CONFIG_H)
+
+if (MSVC)
+  set_target_properties(snappy-static PROPERTIES OUTPUT_NAME snappy-static)
+else()
+  set_target_properties(snappy-static PROPERTIES OUTPUT_NAME snappy)
+endif()
+
 if(SNAPPY_BUILD_TESTS OR SNAPPY_BUILD_BENCHMARKS)
   add_library(snappy_test_support "")
   target_sources(snappy_test_support
@@ -399,7 +416,7 @@ if(SNAPPY_INSTALL)
 include(GNUInstallDirs)
 
 if(SNAPPY_INSTALL)
-  install(TARGETS snappy
+  install(TARGETS snappy snappy-static
     EXPORT SnappyTargets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}