--- CMakeLists.txt.orig	2024-10-23 22:32:38 UTC
+++ CMakeLists.txt
@@ -75,7 +75,7 @@ set(CCTZ_HDRS
   include/cctz/zone_info_source.h
   include/cctz/civil_time.h
   )
-add_library(cctz
+add_library(cctz SHARED
   src/civil_time_detail.cc
   src/time_zone_fixed.cc
   src/time_zone_fixed.h
@@ -107,6 +107,11 @@ add_library(cctz::cctz ALIAS cctz)
   target_link_libraries(cctz PUBLIC ${CoreFoundation})
 endif()
 add_library(cctz::cctz ALIAS cctz)
+set_target_properties(cctz PROPERTIES
+    OUTPUT_NAME "cctz"
+    VERSION ${VERSION}
+    SOVERSION ${SOVERSION}
+)
 
 if (BUILD_TOOLS)
   add_executable(time_tool src/time_tool.cc)
@@ -155,7 +160,7 @@ if (BUILD_TESTING)
       time_zone_format_test
       time_zone_lookup_test
     PROPERTY
-      ENVIRONMENT "TZDIR=${CMAKE_CURRENT_SOURCE_DIR}/testdata/zoneinfo"
+      ENVIRONMENT "TZDIR=/usr/share/zoneinfo"
     )
 
   if (BUILD_BENCHMARK)