AIX compile error pp

tdwilson58 has asked for the wisdom of the Perl Monks concerning the following question:

I'm trying to compile perl 5.10 on aix 5.2 using gcc (I've tried gcc versions 3.3.2 and 4.0.
When compiling the pp_sys.c module, I get this error in multiple places:

dereferencing pointer to incomplete type

The only solution I've found was someone who cried "uncle" and bought the IBM C compiler, but it should work with gcc.

I've successfully compiled this on an aix 5.3 server, but I can't upgrade this 5.2 server because it's a vendor box.

Here's the complete output:

Thanks!

`sh  cflags "optimize='-O'" pp_sys.o`  pp_sys.c
          CCCMD =  gcc -maix32 -DPERL_CORE -c -D_ALL_SOURCE -D_ANSI_C_
+SOURCE -D_POSIX_SOURCE -DUSE_NATIVE_DLOPEN -fno-strict-aliasing -pipe
+ -I/usr/local/include -D_LARGE_FILES  -std=c89 -O -Wall   -W -Wendif-
+labels
pp_sys.c: In function `S_dooneliner':
pp_sys.c:3595: warning: initialization discards qualifiers from pointe
+r target type
pp_sys.c:3609: warning: comparison between signed and unsigned
pp_sys.c: In function `S_my_localtime':
pp_sys.c:4401: warning: comparison between signed and unsigned
pp_sys.c: In function `Perl_pp_ghostent':
pp_sys.c:4644: warning: implicit declaration of function `gethostbynam
+e'
pp_sys.c:4644: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4656: warning: implicit declaration of function `gethostbyadd
+r'
pp_sys.c:4656: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4663: warning: implicit declaration of function `gethostent'
pp_sys.c:4663: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4683: error: dereferencing pointer to incomplete type
pp_sys.c:4684: error: dereferencing pointer to incomplete type
pp_sys.c:4684: error: dereferencing pointer to incomplete type
pp_sys.c:4687: error: dereferencing pointer to incomplete type
pp_sys.c:4693: error: dereferencing pointer to incomplete type
pp_sys.c:4694: error: dereferencing pointer to incomplete type
pp_sys.c:4695: error: dereferencing pointer to incomplete type
pp_sys.c:4696: error: dereferencing pointer to incomplete type
pp_sys.c:4703: error: dereferencing pointer to incomplete type
pp_sys.c:4704: error: dereferencing pointer to incomplete type
pp_sys.c:4630: warning: unused variable `elem'
pp_sys.c: In function `Perl_pp_gnetent':
pp_sys.c:4731: warning: implicit declaration of function `getnetbyname
+'
pp_sys.c:4731: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4740: warning: implicit declaration of function `getnetbyaddr
+'
pp_sys.c:4740: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4747: warning: implicit declaration of function `getnetent'
pp_sys.c:4747: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4768: error: dereferencing pointer to incomplete type
pp_sys.c:4770: error: dereferencing pointer to incomplete type
pp_sys.c:4776: error: dereferencing pointer to incomplete type
pp_sys.c:4777: error: dereferencing pointer to incomplete type
pp_sys.c:4778: error: dereferencing pointer to incomplete type
pp_sys.c:4779: error: dereferencing pointer to incomplete type
pp_sys.c: In function `Perl_pp_gprotoent':
pp_sys.c:4804: warning: implicit declaration of function `getprotobyna
+me'
pp_sys.c:4804: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4812: warning: implicit declaration of function `getprotobynu
+mber'
pp_sys.c:4812: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4819: warning: implicit declaration of function `getprotoent'
pp_sys.c:4819: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4829: error: dereferencing pointer to incomplete type
pp_sys.c:4831: error: dereferencing pointer to incomplete type
pp_sys.c:4837: error: dereferencing pointer to incomplete type
pp_sys.c:4838: error: dereferencing pointer to incomplete type
pp_sys.c:4839: error: dereferencing pointer to incomplete type
pp_sys.c: In function `Perl_pp_gservent':
pp_sys.c:4865: warning: implicit declaration of function `getservbynam
+e'
pp_sys.c:4865: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4877: warning: implicit declaration of function `getservbypor
+t'
pp_sys.c:4877: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4884: warning: implicit declaration of function `getservent'
pp_sys.c:4884: warning: assignment makes pointer from integer without 
+a cast
pp_sys.c:4897: error: dereferencing pointer to incomplete type
pp_sys.c:4901: error: dereferencing pointer to incomplete type
pp_sys.c:4907: error: dereferencing pointer to incomplete type
pp_sys.c:4908: error: dereferencing pointer to incomplete type
pp_sys.c:4912: error: dereferencing pointer to incomplete type
pp_sys.c:4914: error: dereferencing pointer to incomplete type
pp_sys.c: In function `Perl_pp_shostent':
pp_sys.c:4927: warning: implicit declaration of function `sethostent'
pp_sys.c: In function `Perl_pp_snetent':
pp_sys.c:4938: warning: implicit declaration of function `setnetent'
pp_sys.c: In function `Perl_pp_sprotoent':
pp_sys.c:4949: warning: implicit declaration of function `setprotoent'
pp_sys.c: In function `Perl_pp_sservent':
pp_sys.c:4960: warning: implicit declaration of function `setservent'
pp_sys.c: In function `Perl_pp_ehostent':
pp_sys.c:4971: warning: implicit declaration of function `endhostent'
pp_sys.c: In function `Perl_pp_enetent':
pp_sys.c:4983: warning: implicit declaration of function `endnetent'
pp_sys.c: In function `Perl_pp_eprotoent':
pp_sys.c:4995: warning: implicit declaration of function `endprotoent'
pp_sys.c: In function `Perl_pp_eservent':
pp_sys.c:5007: warning: implicit declaration of function `endservent'
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Comment on AIX compile error pp_sys.c Download Code

Replies are listed 'Best First'.
Re: AIX compile error pp_sys.c by zwon (Abbot) on Jun 08, 2009 at 21:07 UTC
It looks like netdb.h missed, though there's no warning about it. Can you check if netdb.h exists and contains definitions of all these functions?	[reply]
Re^2: AIX compile error pp_sys.c by tdwilson58 (Initiate) on Jun 08, 2009 at 21:23 UTC
There is a netdb.h file, but it's in the win32/include subdirectory, and this is aix.	[reply]
Re^3: AIX compile error pp_sys.c by zwon (Abbot) on Jun 08, 2009 at 22:28 UTC
Like ikegami said you should check in your system's include directory. All these `gethost...` functions which are you getting warnings about should be declared in `netdb.h`, but for some reason they are not. Also this file should contain the definitions of various structures, e.g. `struct hostent`, and as these definitions wasn't included compiler can't determine memory size that it should allocate for these structures etc, that's why you're getting "dereferencing pointer to incomplete type" errors. I think that's the source of the problem.	[reply] [d/l] [select]
Re^4: AIX compile error pp_sys.c by tdwilson58 (Initiate) on Jun 09, 2009 at 15:09 UTC
Re^5: AIX compile error pp_sys.c by pemungkah (Priest) on Jun 09, 2009 at 16:19 UTC
Re^3: AIX compile error pp_sys.c by ikegami (Patriarch) on Jun 08, 2009 at 21:26 UTC
I think he meant in your system's include directory, not in the Perl distro.	[reply]