From: Steve Lhomme <[email protected]>
Without any optimization flags, MSVC does no dead code elimination (DCE) at
all, even for the most trivial cases. DCE is a prerequisite for building libav
correctly, otherwise there are undefined references to functions for other
architectures and disabled components.
-O1 is the minimal optimization flags for MSVC that does include DCE.
---
configure | 1 +
1 file changed, 1 insertion(+)
diff --git a/configure b/configure
index 25640eb..2ecd0ed 100755
--- a/configure
+++ b/configure
@@ -3279,6 +3279,7 @@ probe_cc(){
_DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
_cflags_speed="-O2"
_cflags_size="-O1"
+ _cflags_noopt="-O1"
if $_cc -nologo- 2>&1 | grep -q Linker; then
_ld_o='-out:$@'
else
--
2.10.2
_______________________________________________
libav-devel mailing list
[email protected]
https://lists.libav.org/mailman/listinfo/libav-devel
