合并多个静态库object不完整

[ldseraph]

合并多个静态库object不完整

描述问题

1. 如果只合并多个静态库,没有.c文件，object会直接报错。
   错误打印

target("rtthread")
    set_kind("static")
    -- add_files("rtthread/*.c")
    add_files("rtthread/*.a")
    after_build(function (target)
        print(target:objectfiles())
    end)

error: unknown source file: rtthread/libDrivers_gcc.a
2.如果合并多个静态库并且添加.c文件，第一次build 正确，第二次object就会不完整。

target("rtthread")
    set_kind("static")
    add_files("rtthread/*.c")
    add_files("rtthread/*.a")
    after_build(function (target)
        print(target:objectfiles())
    end)

第一次
{
"build/.objs/rtthread/cross/none/release/rtthread/aaa.c.o",
"build/.objs/rtthread/cross/none/release/rtthread/libDrivers_gcc.a.o.dir/board.o",
"build/.objs/rtthread/cross/none/release/rtthread/libDrivers_gcc.a.o.dir/drv_usart.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/mempool.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/ipc.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/idle.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/object.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/irq.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/mem.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/scheduler.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/components.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/timer.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/thread.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/device.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/kservice.o",
"build/.objs/rtthread/cross/none/release/rtthread/libKernel_gcc.a.o.dir/clock.o",
"build/.objs/rtthread/cross/none/release/rtthread/libCPU_gcc.a.o.dir/cpuport.o",
"build/.objs/rtthread/cross/none/release/rtthread/libCPU_gcc.a.o.dir/context_gcc.o",
"build/.objs/rtthread/cross/none/release/rtthread/libCPU_gcc.a.o.dir/backtrace.o",
"build/.objs/rtthread/cross/none/release/rtthread/libCPU_gcc.a.o.dir/showmem.o",
"build/.objs/rtthread/cross/none/release/rtthread/libCPU_gcc.a.o.dir/div0.o",
"build/.objs/rtthread/cross/none/release/rtthread/libc_gcc.a.o.dir/syscalls.o",
"build/.objs/rtthread/cross/none/release/rtthread/libc_gcc.a.o.dir/time.o",
"build/.objs/rtthread/cross/none/release/rtthread/libFilesystem_gcc.a.o.dir/dfs_posix.o",
"build/.objs/rtthread/cross/none/release/rtthread/libFilesystem_gcc.a.o.dir/dfs_fs.o",
"build/.objs/rtthread/cross/none/release/rtthread/libFilesystem_gcc.a.o.dir/dfs_file.o",
"build/.objs/rtthread/cross/none/release/rtthread/libFilesystem_gcc.a.o.dir/dfs.o",
"build/.objs/rtthread/cross/none/release/rtthread/libFinsh_gcc.a.o.dir/msh.o",
"build/.objs/rtthread/cross/none/release/rtthread/libFinsh_gcc.a.o.dir/shell.o",
"build/.objs/rtthread/cross/none/release/rtthread/libFinsh_gcc.a.o.dir/cmd.o",
"build/.objs/rtthread/cross/none/release/rtthread/libFinsh_gcc.a.o.dir/msh_file.o",
"build/.objs/rtthread/cross/none/release/rtthread/libDeviceDrivers_gcc.a.o.dir/ringblk_buf.o",
"build/.objs/rtthread/cross/none/release/rtthread/libDeviceDrivers_gcc.a.o.dir/dataqueue.o",
"build/.objs/rtthread/cross/none/release/rtthread/libDeviceDrivers_gcc.a.o.dir/waitqueue.o",
"build/.objs/rtthread/cross/none/release/rtthread/libDeviceDrivers_gcc.a.o.dir/pipe.o",
"build/.objs/rtthread/cross/none/release/rtthread/libDeviceDrivers_gcc.a.o.dir/completion.o",
"build/.objs/rtthread/cross/none/release/rtthread/libDeviceDrivers_gcc.a.o.dir/workqueue.o",
"build/.objs/rtthread/cross/none/release/rtthread/libDeviceDrivers_gcc.a.o.dir/ringbuffer.o",
"build/.objs/rtthread/cross/none/release/rtthread/libDeviceDrivers_gcc.a.o.dir/serial.o"
}
第二次

{ 
  "build/.objs/rtthread/cross/none/release/rtthread/aaa.c.o",
  "build/.objs/rtthread/cross/none/release/rtthread/libDrivers_gcc.a.o.dir/board.o",
  "build/.objs/rtthread/cross/none/release/rtthread/libDrivers_gcc.a.o.dir/drv_usart.o" 
}

期待的结果

build正确

错误信息

如上

相关环境

请提供编译和运行环境信息，下面是一些必须填写的基础信息，便于我们针对性排查问题：

• xmake版本：xmake v2.5.9+202110311353,
• xmake运行平台：Linux USER-20210804KI 5.10.16.3-microsoft-standard-WSL2 SMP Fri Apr 2 22:23:49 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
• xmake目标平台：cross

其他信息

测试工程 xmake-test
有完整xmake.lua

[waruqi]

合并静态库，建议走 merge_staticlib 在 after_link 里面做，这个目前更可靠，也不会有.o 冲突问题。

#1638

[waruqi]

如果只合并多个静态库,没有.c文件，object会直接报错。

目前只有 c++ rules 才带有merge功能，你一个 c 文件都没有，要么加个空文件，要么手动设置 add_rules("c++") 或者直接 add_rules("utils.merge.archive")

[ldseraph]

多谢。问题已经解决。