[FFmpeg-devel] [PATCH] configure: make --disable-optimizations work on MSVC/ICC (PR #21052)

["Kacper Michajłow via ffmpeg-devel" <ffmpeg-devel@ffmpeg.org>]

PR #21052 opened by Kacper Michajłow (kasper93)
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21052
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21052.patch

_cflags_noopt was previously set to optimize for size as a workaround
for issues in MSVC builds without any optimizations. Specifically the
lack of DCE and constant merging. This is no longer needed, as those
issues have been fixed in our codebase.


From a0205fca5c4cc5e7c029befc32b2baa638f0f345 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kacper=20Michaj=C5=82ow?= <kasper93@gmail.com>
Date: Sun, 30 Nov 2025 04:31:19 +0100
Subject: [PATCH] configure: make --disable-optimizations work on MSVC/ICC
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

_cflags_noopt was previously set to optimize for size as a workaround
for issues in MSVC builds without any optimizations. Specifically the
lack of DCE and constant merging. This is no longer needed, as those
issues have been fixed in our codebase.

Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
---
 configure | 2 --
 1 file changed, 2 deletions(-)

diff --git a/configure b/configure
index 883539e361..8fa6e197f9 100755
--- a/configure
+++ b/configure
@@ -5154,7 +5154,6 @@ probe_cc(){
         _depflags='-MMD'
         _cflags_speed='-O3'
         _cflags_size='-Os'
-        _cflags_noopt='-O1'
         _flags_filter=icc_flags
     elif $_cc -v 2>&1 | grep -q xlc; then
         _type=xlc
@@ -5268,7 +5267,6 @@ probe_cc(){
         _DEPCXXFLAGS='$(CXXFLAGS)'
         _cflags_speed="-O2"
         _cflags_size="-O1"
-        _cflags_noopt="-O1"
         if $_cc -nologo- 2>&1 | grep -q Linker; then
             _ld_o='-out:$@'
             _flags_filter=msvc_flags_link
-- 
2.49.1

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