PKG: optimize v2 libretro-scummvm and strip obj. on all (#151)

* PKG: strip `lr-scummvm` & `lr-scummvm-legacy`

* PKG: optimize `libretro-scummvm` by removing heavy engines (leave only lesser ones by shared obj plugin size)

package/miyoo/retroarch/libretro-scummvm-legacy/libretro-scummvm-legacy.mk

@@ -20,6 +20,7 @@ define LIBRETRO_SCUMMVM_LEGACY_BUILD_CMDS
 		CXXFLAGS="$(TARGET_CXXFLAGS) $(LIBRETRO_SCUMMVM_LEGACY_LTO_CXXFLAGS) -ffat-lto-objects" \
 		LDFLAGS="$(TARGET_LDFLAGS) $(LIBRETRO_SCUMMVM_LEGACY_LTO_LDFLAGS) -ffat-lto-objects -shared -Wl,--no-undefined" \
 		$(MAKE) all TOOLSET="$(TARGET_CROSS)" -C $(@D)/backends/platform/libretro/build/ platform="$(RETROARCH_LIBRETRO_PLATFORM)"
+		$(TARGET_STRIP) --strip-unneeded $(@D)/backends/platform/libretro/build/scummvm_libretro.so
 endef
 
 define LIBRETRO_SCUMMVM_LEGACY_INSTALL_TARGET_CMDS

package/miyoo/retroarch/libretro-scummvm/0003-LIBRETRO-disable-large-engines-with-HEAVY-flag.patch

@@ -0,0 +1,113 @@
+From 8902a8a1afb00339bb66b72710c0887a8d0ca449 Mon Sep 17 00:00:00 2001
+From: Apaczer <[email protected]>
+Date: Wed, 12 Feb 2025 22:11:13 +0100
+Subject: [PATCH 3/5] LIBRETRO: disable large engines with HEAVY flag
+
+0 - default
+1 - enable
+2 - disable
+---
+ backends/platform/libretro/Makefile.common    |  3 ++-
+ backends/platform/libretro/heavy_engines.list | 22 +++++++++++++++++++
+ .../libretro/scripts/configure_engines.sh     | 16 +++++++++++++-
+ 3 files changed, 39 insertions(+), 2 deletions(-)
+ create mode 100644 backends/platform/libretro/heavy_engines.list
+
+diff --git a/backends/platform/libretro/Makefile.common b/backends/platform/libretro/Makefile.common
+index 01f2ef19ec2..8e179c48c05 100644
+--- a/backends/platform/libretro/Makefile.common
++++ b/backends/platform/libretro/Makefile.common
+@@ -29,6 +29,7 @@ ENABLE_VKEYBD     = 1
+ HAVE_GCC3         = 1
+ STATIC_LINKING   ?= 0
+ LITE             ?= 0
++HEAVY            ?= 0
+ NO_WIP           ?= 1
+ USE_LIBCO        ?= 1
+ USE_MT32EMU      ?= 1
+@@ -212,7 +213,7 @@ endif
+
+ ifeq (,$(filter clean datafiles coreinfo,$(MAKECMDGOALS)))
+ $(info Configuring ScummVM engines...)
+-ifneq ($(shell cd $(SCRIPTS_PATH); ./configure_engines.sh $(ROOT_PATH) $(SCUMMVM_PATH) $(NO_WIP) $(STATIC_LINKING) $(LITE) $(UNAVAILABLE_DEPS)),0)
++ifneq ($(shell cd $(SCRIPTS_PATH); ./configure_engines.sh $(ROOT_PATH) $(SCUMMVM_PATH) $(NO_WIP) $(STATIC_LINKING) $(LITE) $(HEAVY) $(UNAVAILABLE_DEPS)),0)
+    $(error Configuring ScummVM engines failed)
+ else
+ -include $(SCUMMVM_PATH)/config.mk.engines
+diff --git a/backends/platform/libretro/heavy_engines.list b/backends/platform/libretro/heavy_engines.list
+new file mode 100644
+index 00000000000..85606b3fa9c
+--- /dev/null
++++ b/backends/platform/libretro/heavy_engines.list
+@@ -0,0 +1,22 @@
++ags
++
++glk
++
++kyra
++lol
++eob
++
++mads
++madsv2
++
++mm
++mm1
++xeen
++
++tsage
++
++ultima
++ultima1
++ultima4
++ultima6
++ultima8
+diff --git a/backends/platform/libretro/scripts/configure_engines.sh b/backends/platform/libretro/scripts/configure_engines.sh
+index 43a355bd395..3e1ccecf993 100755
+--- a/backends/platform/libretro/scripts/configure_engines.sh
++++ b/backends/platform/libretro/scripts/configure_engines.sh
+@@ -22,12 +22,13 @@
+ # $3     [REQ] NO_WIP [0,1]
+ # $4     [REQ] STATIC_LINKING [0,1]
+ # $5     [REQ] LITE [0,1,2]
++# $6     [REQ] HEAVY [0,1,2]
+ # $[...] [OPT] Engines dependencies not available
+
+ set -e
+
+ # Exit if in parameters are not provided
+-if [ -z $1 ] || [ -z $2 ] || [ -z $3 ] || [ -z $4 ] || [ -z $5 ] ; then
++if [ -z $1 ] || [ -z $2 ] || [ -z $3 ] || [ -z $4 ] || [ -z $5 ] || [ -z $6 ]; then
+ 	exit 1
+ fi
+
+@@ -42,6 +43,8 @@ STATIC_LINKING=$1
+ shift
+ LITE=$1
+ shift
++HEAVY=$1
++shift
+ no_deps=$@
+
+ cd "${SCUMMVM_PATH}"
+@@ -60,6 +63,17 @@ tot_deps=""
+ # Test LITE
+ [ $LITE -ne 0 ] && engine_disable_all
+
++# Test HEAVY
++if [ $HEAVY -eq 1 ] ; then
++	for eng in $(cat "${BUILD_PATH}"/heavy_engines.list) ; do
++		engine_enable "$eng"
++	done
++elif [ $HEAVY -eq 2 ] ; then
++	for eng in $(cat "${BUILD_PATH}"/heavy_engines.list) ; do
++		engine_disable "$eng"
++	done
++fi
++
+ if [ $LITE -eq 1 ] ; then
+ 	for eng in $(cat "${BUILD_PATH}"/lite_engines.list) ; do
+ 		engine_enable "$eng"
+-- 
+2.45.2.windows.1
+

package/miyoo/retroarch/libretro-scummvm/0005-LR-Makefile-use-TREMOR-explicitly.patch

@@ -0,0 +1,34 @@
+From 67682387370edddb2205ff9c1b0fc80b41be23c6 Mon Sep 17 00:00:00 2001
+From: Apaczer <[email protected]>
+Date: Tue, 11 Feb 2025 22:22:49 +0100
+Subject: [PATCH 5/5] LR-Makefile: use TREMOR explicitly
+
+thus disable Fluidsynth from build
+also use -fno-PIC
+---
+ backends/platform/libretro/Makefile | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/backends/platform/libretro/Makefile b/backends/platform/libretro/Makefile
+index 4a3cdc99236..a7508996a64 100644
+--- a/backends/platform/libretro/Makefile
++++ b/backends/platform/libretro/Makefile
+@@ -280,12 +280,13 @@ else ifeq ($(platform), miyoo)
+    LD = /opt/miyoo/usr/bin/arm-linux-g++
+    AR = /opt/miyoo/usr/bin/arm-linux-ar cru
+    RANLIB = /opt/miyoo/usr/bin/arm-linux-ranlib
+-   DEFINES += -DDINGUX -fomit-frame-pointer -ffast-math -march=armv5te -mtune=arm926ej-s -fPIC
++   DEFINES += -DDINGUX -fomit-frame-pointer -ffast-math -march=armv5te -mtune=arm926ej-s -fno-PIC
+    DEFINES += -ffunction-sections -fdata-sections -DDEFAULT_PERF_TUNER -DREDUCE_MEMORY_USAGE -DUNCACHED_PLUGINS
+-   LDFLAGS += -shared -Wl,--gc-sections -Wl,--version-script=$(ROOT_PATH)/link.T -fPIC
++   LDFLAGS += -shared -Wl,--gc-sections -Wl,--version-script=$(ROOT_PATH)/link.T -fno-PIC
+    USE_VORBIS = 0
+    USE_THEORADEC = 0
+    USE_TREMOR = 1
++   USE_FLUIDSYNTH = 0
+    USE_LIBCO  = 0
+    USE_CURL = 0
+    USE_MT32EMU = 0
+-- 
+2.45.2.windows.1
+

package/miyoo/retroarch/libretro-scummvm/0006-LIBRETRO-force-disable-all-unstable-eng-if-NO_WIP-1.patch

@@ -0,0 +1,26 @@
+From 3e4f8c0f3f3a97cdf9a5e298e8018536029a0c24 Mon Sep 17 00:00:00 2001
+From: Apaczer <[email protected]>
+Date: Fri, 14 Feb 2025 14:54:36 +0100
+Subject: [PATCH 6/6] LIBRETRO: force "disable all unstable eng" if NO_WIP=1
+
+---
+ backends/platform/libretro/scripts/configure_engines.sh | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/backends/platform/libretro/scripts/configure_engines.sh b/backends/platform/libretro/scripts/configure_engines.sh
+index 3e1ccecf993..cf69709655e 100755
+--- a/backends/platform/libretro/scripts/configure_engines.sh
++++ b/backends/platform/libretro/scripts/configure_engines.sh
+@@ -80,6 +80,9 @@ if [ $LITE -eq 1 ] ; then
+ 	done
+ fi
+
++# Test NO_WIP #2
++[ $NO_WIP -eq 1 ] && engine_disable_all_unstable
++
+ # Define engines list
+ for a in $_engines ; do
+ 	# Collect all default engines dependencies and force to yes
+-- 
+2.45.2.windows.1
+

package/miyoo/retroarch/libretro-scummvm/libretro-scummvm.mk

@@ -21,7 +21,8 @@ define LIBRETRO_SCUMMVM_BUILD_CMDS
 	CFLAGS="$(TARGET_CFLAGS) $(LIBRETRO_SCUMMVM_LTO_CFLAGS) -ffat-lto-objects" \
 		CXXFLAGS="$(TARGET_CXXFLAGS) $(LIBRETRO_SCUMMVM_LTO_CXXFLAGS) -ffat-lto-objects" \
 		LDFLAGS="$(TARGET_LDFLAGS) $(LIBRETRO_SCUMMVM_LTO_LDFLAGS) -ffat-lto-objects -shared -Wl,--no-undefined" \
-		$(MAKE) all TOOLSET="$(TARGET_CROSS)" -C $(@D)/backends/platform/libretro/ platform="$(RETROARCH_LIBRETRO_PLATFORM)"
+		$(MAKE) all TOOLSET="$(TARGET_CROSS)" -C $(@D)/backends/platform/libretro/ HEAVY=2 platform="$(RETROARCH_LIBRETRO_PLATFORM)"
+		$(TARGET_STRIP) --strip-unneeded $(@D)/backends/platform/libretro/scummvm_libretro.so
 endef
 
 define LIBRETRO_SCUMMVM_INSTALL_TARGET_CMDS