[fpc-pascal] Help converting h-file

[Koenraad Lelong]

Jonas Maebe schreef:
> 
> On 07 Sep 2008, at 14:35, Koenraad Lelong wrote:
> 
>> Google helped me understand the "volatile" keyword, but is there a
>> Pascal alternative ?
> 
> No. FPC is at this time unlikely to perform any optimisations on pointer
> or global variables accesses that would be inhibited by making them
> "volatile" though.
> 
>> The "static inline" is more difficult to understand.
> 
> Just declare them as regular functions (with or without inline). It's
> C's way of doing cross-module inlining:
> a) the code has to be available in the header file, so the C compiler
> has the C code available to inline when the function is called
> b) if you declare the same function more than once, you are going to get
> multiple symbols with the same name and these will clash at link time.
> Therefore such inline functions in headers (which are almost always
> included in more than one source file) have to be declared static, as
> this makes these symbols private to that particular file.
> 
> 
> Jonas
What I made of the h-file you can see in the archive. This compiles
fine, both on i386-linux and arm-linux. But when I compile the
testprogram for arm-linux I get this :
....
Searching file /opt/arcom/bin/arm-linux-ld... found
Using util /opt/arcom/bin/arm-linux-ld
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_open':
: undefined reference to `getpagesize'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_open':
: undefined reference to `getenv'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_open':
: undefined reference to `malloc'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_open':
: undefined reference to `open'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_open':
: undefined reference to `mmap'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_open':
: undefined reference to `printf'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_open':
: undefined reference to `printf'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_open':
: undefined reference to `free'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_open':
: undefined reference to `printf'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_open':
: undefined reference to `printf'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_close':
: undefined reference to `munmap'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_close':
: undefined reference to `close'
/opt/arcom/bin/../arm-linux/lib/libdevmem.a(libdevmem.o): In function
`libdevmem_close':
: undefined reference to `free'
testdevmem.pas(29,1) Error: Error while linking
testdevmem.pas(29,1) Fatal: There were 1 errors compiling module, stopping
Fatal: Compilation aborted

I think I'm missing some file to link in, but I think I included every
path. I use make.sh to know exactly what is included and what not, to
try to debug this.
The original c-sample-application needs to statically link in the
library. And I don't have the source of libdevmem, only the h-file.

fpc is 2.2.2rc2. I know 2.2.2 is out but I need time to test if it's ok
to use it for my arm-system.

Thanks for any hints,
Koenraad Lelong.
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