我收到以下 Makefile 错误，感谢任何有用的建议

Question

谁能告诉我我的 make 文件做错了什么？任何正确方向的帮助都值得赞赏。 错误：

make: ../apue.3e/systype.sh: Command not found
Makefile:3: ../apue.3e/Make.defines.: No such file or directory
Makefile:15: ../apue.3e/Make.libapue.inc: No such file or directory
make: *** No rule to make target `../apue.3e/Make.libapue.inc'.  Stop.

我的 Makefile 目前看起来像这样：

    ROOT=../apue.3e
PLATFORM=$(shell $(ROOT)/systype.sh)
include $(ROOT)/Make.defines.$(PLATFORM)

PROGS = shell2

all:    $(PROGS)

%:  %.c $(LIBAPUE)
    $(CC) $(CFLAGS) [email protected] -o $@ $(LDFLAGS) $(LDLIBS)

clean:
    rm -f $(PROGS) $(TEMPFILES) *.o

include $(ROOT)/Make.libapue.inc

我的目录结构看起来像这样，我认为我的 ROOT 路径不正确，但我无法弄清楚：

[singhrav@csci-gnode-02 ~]$ pwd
/export/homes/singhrav
[singhrav@csci-gnode-02 ~]$ ls
a.out                 cse_grid_tutorial   Makefile             OOP            server              tmp
client                Homework03SinghRav  Millionproject1      output         shell2.c            typescript
csci3800hw-singh.txt  hw2                 mysearch-result.txt  output2        SinghRavisher_04
csci3800sp22          lab1                myShell              pythonProject  SinghRavisher_HW02
[singhrav@csci-gnode-02 ~]$ cd csci3800sp22
[singhrav@csci-gnode-02 ~/csci3800sp22]$ ls
apue.3e  src.3e.tar.gz
[singhrav@csci-gnode-02 ~/csci3800sp22]$ cd apue.3e
[singhrav@csci-gnode-02 apue.3e]$ ls
cadvio       environ    include  Make.defines.freebsd  Make.libapue.inc  relation   systype.sh
daemons     exercises  intro    Make.defines.linux    printer           signals    termios
datafiles   figlinks   ipc1     Make.defines.macos    proc              sockets    threadctl
db          filedir    ipc2     Make.defines.solaris  pty               standards  threads
DISCLAIMER  fileio     lib      Makefile              README            stdio
[singhrav@csci-gnode-02 apue.3e]$ cd intro
[singhrav@csci-gnode-02 intro]$ ls
getcputc    hello    ls1    Makefile  mycat.c  shell1.c  shell2.c   testerror.c  uidgid.c
getcputc.c  hello.c  ls1.c  mycat     shell1   shell2    testerror  uidgid
[singhrav@csci-gnode-02 intro]$ cp /export/homes/singhrav/csci3800sp22/apue.3e/intro/shell2 /export/homes/singhrav/lab1
[singhrav@csci-gnode-02 intro]$ cd ..
[singhrav@csci-gnode-02 apue.3e]$ cd ..
[singhrav@csci-gnode-02 ~/csci3800sp22]$ ls
apue.3e  src.3e.tar.gz
[singhrav@csci-gnode-02 ~/csci3800sp22]$ cd ..
[singhrav@csci-gnode-02 ~]$ ls
a.out                 cse_grid_tutorial   Makefile             OOP            server              tmp
client                Homework03SinghRav  Millionproject1      output         shell2.c            typescript
csci3800hw-singh.txt  hw2                 mysearch-result.txt  output2        SinghRavisher_04
csci3800sp22          lab1                myShell              pythonProject  SinghRavisher_HW02
[singhrav@csci-gnode-02 ~]$ cd lab1
[singhrav@csci-gnode-02 ~/lab1]$ ls
Makefile  shell2

Answer 1

makefile 中的相对路径是相对于当前工作目录解释的，而不是相对于它们出现的 makefile 的位置。

因此，鉴于您显示的目录结构和 makefile 内容，只有当您从目录 csci3800sp22/apue.3e 启动 make 时，该 makefile 才会起作用，这使得整个 ROOT业务或多或少没有实际意义。您没有提供有关如何以及从何处启动 make 的足够信息来支持您应该做什么的建议。