apache · aviralgarg05 · Jun 8, 2026 · Jun 22, 2026 · Jul 7, 2026
diff --git a/examples/elf/main/CMakeLists.txt b/examples/elf/main/CMakeLists.txt
@@ -19,7 +19,98 @@
 # ##############################################################################
 
 if(CONFIG_EXAMPLES_ELF)
-  nuttx_add_application(NAME elf SRCS elf_main.c)
+  set(ELF_SYMTAB ${CMAKE_CURRENT_BINARY_DIR}/test_symtab.c)
+  set(ELF_ROMFS_IMG ${CMAKE_CURRENT_BINARY_DIR}/elf_romfs.img)
+  set(ELF_ROMFS_SRC ${CMAKE_CURRENT_BINARY_DIR}/elf_romfs.c)
+
+  set(ELFNAME_BASE hello)
+
+  set(ELF_BINARY_FILES)
+  set(ELF_BINARY_TARGETS)
+  foreach(ELFNAME IN LISTS ELFNAME_BASE)
+    list(APPEND ELF_BINARY_FILES ${CMAKE_BINARY_DIR}/bin/${ELFNAME})
+
+    if(CMAKE_C_ELF_COMPILER)
+      list(APPEND ELF_BINARY_TARGETS ${ELFNAME})
+    else()
+      list(APPEND ELF_BINARY_TARGETS ELF_${ELFNAME})
+    endif()
+  endforeach()
+
+  add_custom_command(
+    OUTPUT ${ELF_SYMTAB}
+    COMMAND ${NUTTX_APPS_DIR}/tools/mksymtab.sh ${ELF_BINARY_FILES} g_elf >
+            ${ELF_SYMTAB}
+    DEPENDS ${ELF_BINARY_TARGETS})
+
+  set_source_files_properties(${ELF_SYMTAB} PROPERTIES GENERATED TRUE)
+
+  set(ELF_GENERATED_OUTPUTS ${ELF_SYMTAB})
+  set(ELF_SRCS elf_main.c ${ELF_SYMTAB})
+
+  if(CONFIG_EXAMPLES_ELF_ROMFS)
+    set(ELF_ROMFS_DEPS ${ELF_BINARY_TARGETS})
+
+    if(CONFIG_SYSTEM_NXPKG)
+      set(ELF_INDEX_JSON ${CMAKE_BINARY_DIR}/bin/index.json)
+      set(ELF_BAD_INDEX_JSON ${CMAKE_BINARY_DIR}/bin/bad-index.json)
+      set(ELF_PKGTEST ${CMAKE_BINARY_DIR}/bin/pkgtest.nsh)
+      set(ELF_PKGFAIL ${CMAKE_BINARY_DIR}/bin/pkgfail.nsh)
+      set(ELF_HELLO_BIN ${CMAKE_BINARY_DIR}/bin/hello)
+      set(ELF_FIXTURE_HOST_DIR ${CMAKE_CURRENT_BINARY_DIR}/host)
+      set(ELF_FIXTURE_HOST_SRC ${CMAKE_CURRENT_SOURCE_DIR}/host/CMakeLists.txt)
+      set(ELF_FIXTURE_TOOL
+          ${ELF_FIXTURE_HOST_DIR}/mk_pkg_fixture${CMAKE_EXECUTABLE_SUFFIX})
+      set(ELF_HELLO_TARGET hello)
+
+      if(NOT CMAKE_C_ELF_COMPILER)
+        set(ELF_HELLO_TARGET ELF_hello)
+      endif()
+
+      add_custom_command(
+        OUTPUT ${ELF_FIXTURE_TOOL}
+        COMMAND ${CMAKE_COMMAND} -S ${CMAKE_CURRENT_SOURCE_DIR}/host -B
+                ${ELF_FIXTURE_HOST_DIR}
+        COMMAND ${CMAKE_COMMAND} --build ${ELF_FIXTURE_HOST_DIR} --target
+                mk_pkg_fixture
+        DEPENDS ${ELF_FIXTURE_HOST_SRC}
+                ${CMAKE_CURRENT_SOURCE_DIR}/mk_pkg_fixture.c
+        VERBATIM)
+
+      add_custom_command(
+        OUTPUT ${ELF_INDEX_JSON} ${ELF_BAD_INDEX_JSON} ${ELF_PKGTEST}
+               ${ELF_PKGFAIL}
+        COMMAND
+          ${ELF_FIXTURE_TOOL} ${ELF_HELLO_BIN} ${ELF_INDEX_JSON}
+          ${ELF_BAD_INDEX_JSON} ${ELF_PKGTEST} ${ELF_PKGFAIL} ${CONFIG_ARCH}
+          ${CONFIG_ARCH_BOARD}
+        DEPENDS ${ELF_HELLO_TARGET} ${ELF_FIXTURE_TOOL}
+        VERBATIM)
+
+      list(APPEND ELF_ROMFS_DEPS ${ELF_INDEX_JSON} ${ELF_BAD_INDEX_JSON}
+           ${ELF_PKGTEST} ${ELF_PKGFAIL})
+    endif()
+
+    add_custom_command(
+      OUTPUT ${ELF_ROMFS_IMG}
+      COMMAND genromfs -f ${ELF_ROMFS_IMG} -d ${CMAKE_BINARY_DIR}/bin
+      DEPENDS ${ELF_ROMFS_DEPS}
+      VERBATIM)
+
+    add_custom_command(
+      OUTPUT ${ELF_ROMFS_SRC}
+      COMMAND xxd -i ${ELF_ROMFS_IMG} > ${ELF_ROMFS_SRC}
+      DEPENDS ${ELF_ROMFS_IMG})
+
+    set_source_files_properties(${ELF_ROMFS_SRC} PROPERTIES GENERATED TRUE)
+
+    list(APPEND ELF_GENERATED_OUTPUTS ${ELF_ROMFS_SRC})
+    list(APPEND ELF_SRCS ${ELF_ROMFS_SRC})
+  endif()
+
+  add_custom_target(elf_artifacts DEPENDS ${ELF_GENERATED_OUTPUTS})
+
+  nuttx_add_application(NAME elf SRCS ${ELF_SRCS} DEPENDS elf_artifacts)
 
   # TODO: tests
 

diff --git a/examples/elf/main/Makefile b/examples/elf/main/Makefile
@@ -69,8 +69,34 @@ ifeq ($(CONFIG_EXAMPLES_ELF_ROMFS),y)
 ROMFSIMG = elf_romfs.img
 ROMFSSRC = elf_romfs.c
 ROMFSOBJ = $(ROMFSSRC:.c=$(OBJEXT))
+ifdef CONFIG_SYSTEM_NXPKG
+HOSTOBJSEXT ?= hobj
+PKGINDEX = $(BINDIR)/index.json
+PKGBADINDEX = $(BINDIR)/bad-index.json
+PKGTEST  = $(BINDIR)/pkgtest.nsh
+PKGFAIL  = $(BINDIR)/pkgfail.nsh
+PKG_FIXTURE_GEN = mk_pkg_fixture$(HOSTEXEEXT)
+PKG_FIXTURE_SRCS = mk_pkg_fixture.c
+PKG_FIXTURE_OBJS = $(PKG_FIXTURE_SRCS:.c=.$(HOSTOBJSEXT))
+PKG_FIXTURE_OUTPUTS = $(PKGINDEX) $(PKGBADINDEX) $(PKGTEST) $(PKGFAIL)
+PKG_FIXTURE_INPUTS = $(BINDIR)/hello
+PKG_FIXTURE_ARGS = \
+	$(BINDIR)/hello $(PKGINDEX) $(PKGBADINDEX) $(PKGTEST) $(PKGFAIL) \
+	$(CONFIG_ARCH) $(CONFIG_ARCH_BOARD)
+
+$(PKG_FIXTURE_OBJS): %.$(HOSTOBJSEXT): %.c
+	@echo "CC:  $<"
+	$(Q) $(HOSTCC) -c $(HOSTCFLAGS) $< -o $@
+
+$(PKG_FIXTURE_GEN): $(PKG_FIXTURE_OBJS)
+	$(Q) $(HOSTCC) $(HOSTLDFLAGS) $(PKG_FIXTURE_OBJS) -o $@
+
+$(PKG_FIXTURE_OUTPUTS) &: $(PKG_FIXTURE_INPUTS) $(PKG_FIXTURE_GEN)
+	$(Q) ./$(PKG_FIXTURE_GEN) \
+		$(PKG_FIXTURE_ARGS)
+endif
 
-$(ROMFSIMG):
+$(ROMFSIMG): $(PKG_FIXTURE_OUTPUTS)
 	$(Q) genromfs -d $(BINDIR) -f $@
 
 $(ROMFSSRC): $(ROMFSIMG)
@@ -106,7 +132,7 @@ postinstall:: $(ROMFSOBJ) $(SYMTABOBJ) $(FSIMG_OBJ)
 	$(call ARLOCK, $(call CONVERT_PATH,$(BIN)), $^)
 
 distclean::
-	$(Q) $(call DELFILE, $(SYMTABSRC) $(SYMTABOBJ) $(ROMFSSRC) $(ROMFSIMG) $(ROMFSOBJ) $(MODLUE_NAME))
+	$(Q) $(call DELFILE, $(SYMTABSRC) $(SYMTABOBJ) $(ROMFSSRC) $(ROMFSIMG) $(ROMFSOBJ) $(MODLUE_NAME) $(PKG_FIXTURE_GEN) $(PKG_FIXTURE_OBJS))
 
 
 include $(APPDIR)/Application.mk
diff --git a/examples/elf/main/host/CMakeLists.txt b/examples/elf/main/host/CMakeLists.txt
@@ -0,0 +1,26 @@
+# ##############################################################################
+# apps/examples/elf/main/host/CMakeLists.txt
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements.  See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership.  The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License.  You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+# ##############################################################################
+
+cmake_minimum_required(VERSION 3.16)
+project(elf_fixture_host LANGUAGES C)
+
+add_executable(mk_pkg_fixture ../mk_pkg_fixture.c)