EVO_PHONENUMBER_SUPPORT
+dnl *******************
+dnl Check for ICU
+dnl *******************
+dnl
+dnl ICU recently started shipping pkg-config files but it's
+dnl not present on many systems, if we don't find the pkg-config
+dnl file then let's fallback on a manual check
+enable_icu=no
+PKG_CHECK_MODULES(ICU, icu-i18n, enable_icu=yes, [
+ enable_icu=yes
+ AC_CHECK_HEADERS(unicode/ucol.h,, enable_icu=no)
+ AC_MSG_CHECKING([for libicui18n])
+ LIBS_old=$LIBS
+ LIBS="$LIBS -licui18n -licuuc -licudata"
+ AC_TRY_LINK([#include <unicode/ucol.h>],
+ [ucol_open ("", NULL);],
+ AC_MSG_RESULT(yes),
+ AC_MSG_RESULT(no); enable_icu=no)
+ LIBS=$LIBS_old
+ if [test x$enable_icu = xyes]; then
+ ICU_CFLAGS=-D_REENTRANT
+ ICU_LIBS="-licui18n -licuuc -licudata"
+ AC_SUBST(ICU_CFLAGS)
+ AC_SUBST(ICU_LIBS)
+ else
+ AC_MSG_ERROR([ICU libs not found, icu-i18n is required.])
+ fi
+])
+
dnl *************************
dnl Check for GTK+
dnl *************************