diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9e12909..447c3f3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,6 +44,14 @@ if(CMAKE_SYSTEM_NAME MATCHES "HP-UX")
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=600 -D__STRICT_ALIGNMENT")
 endif()
 
+if(CMAKE_SYSTEM_NAME MATCHES "SunOS")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -std=gnu99 -fno-strict-aliasing")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D__EXTENSIONS__")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=600")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DBSD_COMP")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fpic -m64")
+endif()
+
 add_definitions(-DLIBRESSL_INTERNAL)
 add_definitions(-DOPENSSL_NO_HW_PADLOCK)
 
@@ -202,6 +210,9 @@ endif()
 if(CMAKE_SYSTEM_NAME MATCHES "HP-UX")
 	set(OPENSSL_LIBS ${OPENSSL_LIBS} pthread)
 endif()
+if(CMAKE_SYSTEM_NAME MATCHES "SunOS")
+	set(OPENSSL_LIBS ${OPENSSL_LIBS} nsl socket)
+endif()
 
 if(NOT (CMAKE_SYSTEM_NAME MATCHES "(Darwin|MINGW|CYGWIN)" OR MSVC))
 	set(BUILD_SHARED true)
@@ -210,8 +221,8 @@ endif()
 check_type_size(time_t SIZEOF_TIME_T)
 if(SIZEOF_TIME_T STREQUAL "4")
 	set(SMALL_TIME_T true)
-	message(WARNING " ** Warning, this system is unable to represent times past 2038")
-	message(WARNING " ** It will behave incorrectly when handling valid RFC5280 dates")
+	message(WARNING " ** Warning, this system is unable to represent times past 2038\n"
+	                " ** It will behave incorrectly when handling valid RFC5280 dates")
 endif()
 add_definitions(-DSIZEOF_TIME_T=${SIZEOF_TIME_T})