--- CMakeLists.txt.orig	2022-08-05 07:45:35 UTC
+++ CMakeLists.txt
@@ -6,7 +6,7 @@ project(evolution-data-server
 project(evolution-data-server
 	VERSION 3.44.4
 	LANGUAGES C CXX)
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
 set(PROJECT_BUGREPORT "https://gitlab.gnome.org/GNOME/evolution-data-server/issues/")
 
 # Base Version: This is for API/version tracking for things like
@@ -358,7 +358,7 @@ endif(WIN32)
 # ICU started shipping pkg-config files but it's not present
 # on many systems, if we don't find the pkg-config
 # file then let's fallback on a manual check
-pkg_check_modules(ICU icu-i18n)
+pkg_check_modules(ICU icu-i18n icu-uc)
 
 if(NOT ICU_FOUND)
 	CHECK_INCLUDE_FILE(unicode/ucol.h HAVE_UNICODE_UCOL_H)
@@ -526,6 +526,7 @@ set(CMAKE_REQUIRED_LIBRARIES "-liconv")
 # ******************************
 
 set(CMAKE_REQUIRED_LIBRARIES "-liconv")
+set(CMAKE_REQUIRED_FLAGS "-L/usr/local/lib")
 CHECK_C_SOURCE_COMPILES("#include <iconv.h>
 			#include <stdlib.h>
 			int main(void) { iconv_t cd; cd = iconv_open (\"UTF-8\", \"ISO-8859-1\"); return 0; }" HAVE_LIBICONV)