[help-gengetopt] gengetopt C example

[Tong Sun]

Hi again Lorenzo, 

I'm trying gengetopt with C this time, but the C example that come with my 
Debian/Ubuntu package gave me some errors. The first one being:

In file included from cmdline2.c:26:0:
cmdline2.h:24:35: error: expected ',' or ';' before 'PACKAGE'
 #define MY_CMDLINE_PARSER_PACKAGE PACKAGE

In details, 

Here are the example files distributed from my Debian/Ubuntu package

/usr/share/doc/gengetopt/examples
/usr/share/doc/gengetopt/examples/cmdline2.c.gz
/usr/share/doc/gengetopt/examples/cmdline2.h.gz
/usr/share/doc/gengetopt/examples/sample1.ggo
/usr/share/doc/gengetopt/examples/main1.cc
/usr/share/doc/gengetopt/examples/main2.c
/usr/share/doc/gengetopt/examples/cmdline1.c.gz
/usr/share/doc/gengetopt/examples/README.example
/usr/share/doc/gengetopt/examples/test_manual_help_cmd.c.gz
/usr/share/doc/gengetopt/examples/test_manual_help.c
/usr/share/doc/gengetopt/examples/sample2.ggo
... 

and my gengetopt:

$ apt-cache policy gengetopt
gengetopt:
  Installed: 2.22.6-2
  Candidate: 2.22.6-2
  Version table:
 *** 2.22.6-2 0
        500 http://us.archive.ubuntu.com/ubuntu/ saucy/universe i386 Packages
        100 /var/lib/dpkg/status


From /usr/share/doc/gengetopt/examples/README.example:

... 

# commands to try the C example: 

gengetopt --input=sample2.ggo --func-name=my_cmdline_parser 
--file-name=cmdline2 --unamed-opts
gcc -o main2 main2.c cmdline2.c
./main2 -h
... 


This is how I tried:

mkdir gengetopt; cd gengetopt

 ln -s /usr/share/doc/gengetopt/examples/sample2.ggo
 ln -s /usr/share/doc/gengetopt/examples/main2.c
 gengetopt --input=sample2.ggo --func-name=my_cmdline_parser 
--file-name=cmdline2 --unamed-opts
 gcc -o main2 main2.c cmdline2.c

and here are all the errors that I get:

$ gcc -o main2 main2.c cmdline2.c
In file included from cmdline2.c:26:0:
cmdline2.h:24:35: error: expected ',' or ';' before 'PACKAGE'
 #define MY_CMDLINE_PARSER_PACKAGE PACKAGE
                                   ^
cmdline2.c:30:51: note: in expansion of macro 'MY_CMDLINE_PARSER_PACKAGE'
 const char *gengetopt_args_info_usage = "Usage: " MY_CMDLINE_PARSER_PACKAGE " [
                                                   ^
cmdline2.c: In function 'my_cmdline_parser_print_version':
cmdline2.h:32:40: error: 'PACKAGE' undeclared (first use in this function)
 #define MY_CMDLINE_PARSER_PACKAGE_NAME PACKAGE
                                        ^
cmdline2.c:165:14: note: in expansion of macro 'MY_CMDLINE_PARSER_PACKAGE_NAME'
      (strlen(MY_CMDLINE_PARSER_PACKAGE_NAME) ? MY_CMDLINE_PARSER_PACKAGE_NAME :
              ^
cmdline2.h:32:40: note: each undeclared identifier is reported only once for 
each function it appears in
 #define MY_CMDLINE_PARSER_PACKAGE_NAME PACKAGE
                                        ^
cmdline2.c:165:14: note: in expansion of macro 'MY_CMDLINE_PARSER_PACKAGE_NAME'
      (strlen(MY_CMDLINE_PARSER_PACKAGE_NAME) ? MY_CMDLINE_PARSER_PACKAGE_NAME :
              ^
cmdline2.h:38:35: error: 'VERSION' undeclared (first use in this function)
 #define MY_CMDLINE_PARSER_VERSION VERSION
                                   ^
cmdline2.c:166:6: note: in expansion of macro 'MY_CMDLINE_PARSER_VERSION'
      MY_CMDLINE_PARSER_VERSION);
      ^
cmdline2.c: In function 'my_cmdline_parser_dump':
cmdline2.h:24:35: error: 'PACKAGE' undeclared (first use in this function)
 #define MY_CMDLINE_PARSER_PACKAGE PACKAGE
                                   ^
cmdline2.c:293:63: note: in expansion of macro 'MY_CMDLINE_PARSER_PACKAGE'
       fprintf (stderr, "%s: cannot dump options to stream\n", MY_CMDLINE_PARSER
                                                               ^
cmdline2.c: In function 'my_cmdline_parser_file_save':
cmdline2.h:24:35: error: 'PACKAGE' undeclared (first use in this function)
 #define MY_CMDLINE_PARSER_PACKAGE PACKAGE
                                   ^
cmdline2.c:341:66: note: in expansion of macro 'MY_CMDLINE_PARSER_PACKAGE'
       fprintf (stderr, "%s: cannot open file for writing: %s\n", MY_CMDLINE_PAR
                                                                  ^
cmdline2.c: In function 'my_cmdline_parser_internal':
cmdline2.h:24:35: error: 'PACKAGE' undeclared (first use in this function)
 #define MY_CMDLINE_PARSER_PACKAGE PACKAGE
                                   ^
cmdline2.c:817:58: note: in expansion of macro 'MY_CMDLINE_PARSER_PACKAGE'
           fprintf (stderr, "%s: option unknown: %c%s\n", MY_CMDLINE_PARSER_PACK

Any thoughts? 

BTW, if you have a small working example, does it have a make file as well?  

Thanks