Bugfix: configure: Only require SVG-rendering tools if GUI is being built

Author: luke-jr

configure.ac

@@ -778,14 +778,6 @@ case $host in
      ;;
 esac
 
-AM_CONDITIONAL([CAN_RENDER_ICONS], [test "$can_render_icons" = "yes"])
-if test "$can_render_icons" != "yes"; then
-  if test "$bitcoin_enable_qt" != "no" && test ! -f "${srcdir}/src/qt/res/rendered_icons/bitcoin.ico"; then
-    AC_MSG_ERROR([Couldn't find ${can_render_icons} (required to build GUI from git)])
-  fi
-  AC_MSG_WARN([Couldn't find ${can_render_icons}; you won't get the Knots-branded Bitcoin icon])
-fi
-
 if test "$use_extended_functional_tests" != "no"; then
   AC_SUBST(EXTENDED_FUNCTIONAL_TESTS, --extended)
 fi
@@ -1209,6 +1201,13 @@ else
   fi
 fi
 
+AM_CONDITIONAL([CAN_RENDER_ICONS], [test "$can_render_icons" = "yes"])
+if test "$can_render_icons" != "yes"; then
+  if test "$bitcoin_enable_qt" != "no" && test ! -f "${srcdir}/src/qt/res/rendered_icons/bitcoin.ico"; then
+    AC_MSG_ERROR([Couldn't find ${can_render_icons} (required to build GUI from git)])
+  fi
+fi
+
 if test "$enable_fuzz_binary" = "yes"; then
   AC_MSG_CHECKING([whether main function is needed for fuzz binary])
   AX_CHECK_LINK_FLAG(