[PATCH v3 0/1] MR10953: Update default i386 CFLAGS

[Matteo Bruni (＠Mystral)]

The immediate reason for this is !10716, but I suspect it might come in handy in other places as well. FWIW I've been building Wine with similar CFLAGS for many, many years.

--
  v3: configure: Add x86-64 CPU features to default i386_EXTRACFLAGS.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10953

[PATCH v3 1/1] configure: Add x86-64 CPU features to default i386_EXTRACFLAGS.

[Matteo Bruni]

From: Matteo Bruni <[e-mail]>

The most restrictive of those is SSE2, which has been supported by x86
CPUs since the Intel Pentium 4 (2000) and the AMD Athlon 64 (2003).
---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index f91c06f476f..74f6e988df8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -629,6 +629,7 @@ This is an error since --enable-archs=$wine_arch was requested.])])
       i386) WINE_TRY_PE_CFLAGS([-fno-omit-frame-pointer])
             WINE_TRY_PE_CFLAGS([-mpreferred-stack-boundary=2])
             WINE_TRY_PE_CFLAGS([-mlong-double-64])
+            WINE_TRY_PE_CFLAGS([-msse2])
             WINE_TRY_PE_CFLAGS([-Wl,--disable-stdcall-fixup],
                                [AS_VAR_APPEND([${wine_arch}_LDFLAGS],[" -Wl,--disable-stdcall-fixup"])]) ;;
       x86_64) WINE_TRY_PE_CFLAGS([-Wformat-overflow])
-- 
GitLab

https://gitlab.winehq.org/wine/wine/-/merge_requests/10953

[Matteo Bruni (＠Mystral)]

On Thu Jun  4 08:58:32 2026 +0000, Matteo Bruni wrote:
> changed this line in [version 3 of the diff](/wine/wine/-/merge_requests/10953/diffs?diff_id=272788&start_sha=606ff587e97ca6769f3b42258d3349552a12865e#87db583be5c13c1f7b3c958b10e03d67b6a2ca06_635_633)
> There was not much of a point; I just enumerated the flags enabled by `-march=x86-64`, of which `-mfxsr` is the only one not implied by `-msse2` and I guess not one that's likely to matter for us.

-- 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10953#note_142177