X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fconfig%2Fsubs.m4;h=491a2777863b2611ebd8688b5d216f2b97fedfe7;hb=38a4dbb8c82ee17c7153ef8b58ee45a985c37bb3;hp=7760ed2de99af3b564c04dae84406142aaa941de;hpb=420856af6e870e6897771965c9d474168c019274;p=synfig.git

diff --git a/synfig-core/trunk/config/subs.m4 b/synfig-core/trunk/config/subs.m4
index 7760ed2..491a277 100644
--- a/synfig-core/trunk/config/subs.m4
+++ b/synfig-core/trunk/config/subs.m4
@@ -16,6 +16,7 @@ AC_DEFUN([AC_ARG_WARNINGS],
 
   gtkmm_warning_flags=''
 
+  # -W is now known as -Wextra, but that's not known by gcc 2 or 3
   case "$gtkmm_enable_warnings" in
     none|no)     gtkmm_warning_flags='';;
     minimum|yes) gtkmm_warning_flags='-Wall -Wno-unused-parameter';;
@@ -96,14 +97,15 @@ AC_DEFUN([AC_ARG_DEBUG],
 
 
 
+## Optimisation level 2 in g++ 4.1 or g++ 4.2 breaks composition loading in the vector parsing function in loadcanvas.cpp (1509627)
 AC_DEFUN([AC_ARG_OPTIMIZATION],
 [
 	AC_MSG_CHECKING([for optimization flags])
 
-	AC_ARG_ENABLE(optimization,[  --enable-optimization=[[0,1,2,3,4]] Select optimization level (default=1)],[
+	AC_ARG_ENABLE(optimization,[  --enable-optimization=[[0,1,2,3,4]] Select optimization level (default=2)],[
 		optimization=$enableval
 	],[
-		optimization="1"
+		optimization="2"
 	])
 	optimization_flags=''
 	case "$optimization" in