configure: add ability to select plugins to build in --plugins flag

commit aea9e1b63fc957355ba3447c9551d567c710d56b
Author: Roman Artiukhin <[email protected]>
Date:   Mon Feb 16 11:11:19 2026 +0200

    configure: add ability to select plugins to build in --plugins flag
    
    Use ":" as the separator. Useful for plugin development and debugging.
    
    Example:
    ../tools/configure --target=hibyr1 --type=ADS --plugins="properties.c:imageviewer"
    
    This creates a debug simulator build for Hiby R1 with the properties.c file and the imageviewer directory plugins enabled.
    
    Change-Id: If974cfb0c54bd2c1a53ae11cc3f942c698ef2fe4

diff --git a/apps/plugins/plugins.make b/apps/plugins/plugins.make
index 8620d3f9c0..55a6946c61 100644
--- a/apps/plugins/plugins.make
+++ b/apps/plugins/plugins.make
@@ -20,11 +20,15 @@ ifeq ($(APP_TYPE),ctru-app)
     is_app_build =
 endif
 
+ifdef SELECTED_PLUGINS_SRC
+PLUGINS_SRC = $(SELECTED_PLUGINS_SRC)
+else
 ifdef is_app_build
 PLUGINS_SRC = $(call preprocess, $(APPSDIR)/plugins/SOURCES.app_build)
 else
 PLUGINS_SRC = $(call preprocess, $(APPSDIR)/plugins/SOURCES)
 endif
+endif # ifdef SELECTED_PLUGINS_SRC
 OTHER_SRC += $(PLUGINS_SRC)
 ROCKS1 := $(PLUGINS_SRC:.c=.rock)
 ROCKS1 := $(call full_path_subst,$(ROOTDIR)/%,$(BUILDDIR)/%,$(ROCKS1))
@@ -58,11 +62,15 @@ endif
 OTHER_SRC += $(ROOTDIR)/apps/plugins/plugin_crt0.c
 PLUGIN_CRT0 := $(BUILDDIR)/apps/plugins/plugin_crt0.o
 # multifile plugins (subdirs):
+ifdef SELECTED_PLUGINS_SUBDIRS
+PLUGINSUBDIRS := $(SELECTED_PLUGINS_SUBDIRS)
+else
 ifdef is_app_build
 PLUGINSUBDIRS := $(call preprocess, $(APPSDIR)/plugins/SUBDIRS.app_build)
 else
 PLUGINSUBDIRS := $(call preprocess, $(APPSDIR)/plugins/SUBDIRS)
 endif
+endif # ifdef SELECTED_PLUGINS_SUBDIRS
 
 PLUGIN_LIBS := $(PLUGINLIB) $(PLUGINBITMAPLIB) $(SETJMPLIB) $(FIXEDPOINTLIB)
 
diff --git a/tools/configure b/tools/configure
index 8d7739f0cc..b68709b90a 100755
--- a/tools/configure
+++ b/tools/configure
@@ -1557,6 +1557,7 @@ ARG_THREAD_SUPPORT=
 ARG_32BIT=
 ARG_ADDR_SAN=
 ARG_UBSAN=
+ARG_PLUGINS=
 err=
 for arg in "$@"; do
 	case "$arg" in
@@ -1573,6 +1574,7 @@ for arg in "$@"; do
 		--ttsopts=*)  ARG_TTSOPTS=`echo "$arg" | cut -d = -f 2`;;
 		--type=*)     ARG_TYPE=`echo "$arg" | cut -d = -f 2`;;
 		--voice=*)    ARG_VOICE=`echo "$arg" | cut -d = -f 2`;;
+		--plugins=*)  ARG_PLUGINS=`echo "$arg" | cut -d = -f 2`;;
 		--thumb)      ARG_ARM_THUMB=1;;
 		--no-thumb)   ARG_ARM_THUMB=0;;
 		--32-bit)     ARG_32BIT=1;;
@@ -4828,11 +4830,34 @@ cmdline=`echo $cmdline | sed -e s,--target=[a-zA-Z_0-9]\*,,g \
                             -e s,--type=[a-zA-Z0-9]\*,,g`
 cmdline="$cmdline --target=\$(MODELNAME) --ram=\$(MEMORYSIZE) --rbdir=\$(RBDIR) --type=$btype$advopts"
 
+if [ -n "$ARG_PLUGINS" ]; then
+    echo "Selected plugins: $ARG_PLUGINS"
+    plugins="yes"
+
+    selected_src=""
+    selected_subdirs=""
+    chk_plugin_dir="${rootdir}/apps/plugins"
+
+    IFS=":"
+    for p in $ARG_PLUGINS; do
+        if [ -d "$chk_plugin_dir/$p" ]; then
+             selected_subdirs="$selected_subdirs \$(ROOTDIR)/apps/plugins/$p"
+        elif [ -f "$chk_plugin_dir/$p" ]; then
+             selected_src="$selected_src \$(ROOTDIR)/apps/plugins/$p"
+        else
+             echo "Warning: Plugin '$p' found neither as file nor directory in $chk_plugin_dir. Use ':' as the separator."
+        fi
+    done
+fi
+
 ### end of cmdline
 
 cat > Makefile <<EOF
 ## Automatically generated. http://www.rockbox.org/
 
+export SELECTED_PLUGINS_SRC=${selected_src}
+export SELECTED_PLUGINS_SUBDIRS=${selected_subdirs}
+
 export ROOTDIR=${rootdir}
 export FIRMDIR=\$(ROOTDIR)/firmware
 export APPSDIR=${appsdir}
-- 
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