From f59ddbb64560fd6ae1d36d408fdc78fdff2559c4 Mon Sep 17 00:00:00 2001
From: bol-van <none@none.none>
Date: Tue, 3 Mar 2026 19:25:33 +0300
Subject: [PATCH] github,linux-builder: revert to lj_alloc for arm64 and mips64

---
 .github/workflows/build.yml              | 15 +++++++++++++--
 docs/compile/builder-linux/build_deps.sh | 11 ++++++++++-
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 360911a..6906ffd 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -100,6 +100,7 @@ jobs:
           export PKG_CONFIG_PATH=$DEPS_DIR/lib/pkgconfig
           export STAGING_DIR=$RUNNER_TEMP
           OPTIMIZE=-Oz
+          SYSMALLOC=-DLUAJIT_USE_SYSMALLOC
           case "$ARCH" in
             lexra)
               OPTIMIZE=-Os
@@ -107,6 +108,10 @@ jobs:
             arm)
               CPU="-mcpu=cortex-a7 -mthumb"
               ;;
+            arm64|mips64)
+              # not safe without GC64
+              SYSMALLOC=
+              ;;
           esac
           MINSIZE="$OPTIMIZE $MINSIZE"
 
@@ -131,9 +136,10 @@ jobs:
               *)
                 HOSTCC="cc -m32"
             esac
+            echo ARCH=$ARCH SYSMALLOC=$SYSMALLOC
             (
               cd luajit2-*
-              make BUILDMODE=static XCFLAGS="-DLUAJIT_USE_SYSMALLOC -DLUAJIT_DISABLE_FFI" HOST_CC="$HOSTCC" CROSS= CC="$CC" TARGET_AR="$AR rcus" TARGET_STRIP=$STRIP TARGET_CFLAGS="$CPU $MINSIZE $CFLAGS" TARGET_LDFLAGS="$CPU $LDMINSIZE $LDFLAGS" -j$(nproc)
+              make BUILDMODE=static XCFLAGS="$SYSMALLOC -DLUAJIT_DISABLE_FFI" HOST_CC="$HOSTCC" CROSS= CC="$CC" TARGET_AR="$AR rcus" TARGET_STRIP=$STRIP TARGET_CFLAGS="$CPU $MINSIZE $CFLAGS" TARGET_LDFLAGS="$CPU $LDMINSIZE $LDFLAGS" -j$(nproc)
               make install PREFIX= DESTDIR=$DEPS_DIR
             )
             LJIT=1
@@ -236,10 +242,15 @@ jobs:
           export RANLIB=$TOOLCHAIN/bin/llvm-ranlib
           export STRIP=$TOOLCHAIN/bin/llvm-strip
           export PKG_CONFIG_PATH=$DEPS_DIR/lib/pkgconfig
+          SYSMALLOC=-DLUAJIT_USE_SYSMALLOC
           case "$ABI" in
             armeabi-v7a)
               CPU="-mthumb"
               ;;
+            arm64-v8a)
+              # not safe without GC64
+              SYSMALLOC=
+              ;;
           esac
 
           # luajit
@@ -253,7 +264,7 @@ jobs:
           esac
           (
             cd luajit2-*
-            make BUILDMODE=static XCFLAGS="-DLUAJIT_USE_SYSMALLOC -DLUAJIT_DISABLE_FFI" HOST_CC="$HOSTCC" CROSS= CC="$CC" TARGET_AR="$AR rcus" TARGET_STRIP=$STRIP TARGET_CFLAGS="$CPU $MINSIZE $CFLAGS" TARGET_LDFLAGS="$LDMINSIZE $LDFLAGS" -j$(nproc)
+            make BUILDMODE=static XCFLAGS="$SYSMALLOC -DLUAJIT_DISABLE_FFI" HOST_CC="$HOSTCC" CROSS= CC="$CC" TARGET_AR="$AR rcus" TARGET_STRIP=$STRIP TARGET_CFLAGS="$CPU $MINSIZE $CFLAGS" TARGET_LDFLAGS="$LDMINSIZE $LDFLAGS" -j$(nproc)
             make install PREFIX= DESTDIR=$DEPS_DIR
           )
           LJIT=1
diff --git a/docs/compile/builder-linux/build_deps.sh b/docs/compile/builder-linux/build_deps.sh
index 34af193..d265eb9 100755
--- a/docs/compile/builder-linux/build_deps.sh
+++ b/docs/compile/builder-linux/build_deps.sh
@@ -62,11 +62,20 @@ build_lua()
 build_luajit()
 {
 	local CFL="$CFLAGS"
+	local SYSMALLOC=
 (
 	cd luajit2-*
 	CFLAGS="-Os"
 	make clean
-	make BUILDMODE=static XCFLAGS="-DLUAJIT_USE_SYSMALLOC -DLUAJIT_DISABLE_FFI $CFLAGS_PIC" HOST_CC="$HOST_CC" CROSS= CC="$CC" TARGET_AR="$AR rcus" TARGET_STRIP=$STRIP TARGET_CFLAGS="$OPTIMIZE $MINSIZE $CFL" TARGET_LDFLAGS="$CPU $LDMINSIZE $LDFLAGS"
+	case $TARGET in
+		aarch64*|mips64*)
+			# sysmalloc can cause troubles without GC64. GC64 slows down by 10-15%. better not to use sysmalloc and leave lj_alloc.
+			;;
+		*)
+			# save some exe size
+			SYSMALLOC=-DLUAJIT_USE_SYSMALLOC
+	esac
+	make BUILDMODE=static XCFLAGS="$SYSMALLOC -DLUAJIT_DISABLE_FFI $CFLAGS_PIC" HOST_CC="$HOST_CC" CROSS= CC="$CC" TARGET_AR="$AR rcus" TARGET_STRIP=$STRIP TARGET_CFLAGS="$OPTIMIZE $MINSIZE $CFL" TARGET_LDFLAGS="$CPU $LDMINSIZE $LDFLAGS"
 	make install PREFIX= DESTDIR="$STAGING_DIR"
 )
 }