[Bug-ocrad] Re: ocrad-0.7 build feedback

[Antonio Diaz]

Thanks for your feedback.

Nelson H. F. Beebe wrote:
> Also, there is a problem in Makefile.in: it is not obeying settings of
> CC and CXX made at configure time, but instead is forcing builds with
> g++.  Makefile.in MUST have
>
> CC = @CC@
> CXX = @CXX@
>
> configure will supply suitable values, defaulting to gcc and g++ if
> they are not otherwise set.

Compatibility with non GNU systems is, just now, not a priority for 
ocrad. Just as an info page was not a priority for ocrad-0.1.
Ocrad does not use autoconf, and I don't know how to detect wathever 
compiler a system has. For now you have to edit the makefile or use the 
method explained in the INSTALL file:
        ./configure
        make CXX=your_compiler_name ...


> Here is a summary of the problems:
>
> ------------------------------------------------------------------------
> Machinetype:            IBM RS6000 43P-132 (133 MHz);  AIX 4.2
> g++  -Wall -W -O2 -c -o bitmap.o bitmap.cc
> bitmap.cc: In function `char {anonymous}::pbm_getrawbyte(FILE *)':
> bitmap.cc:32: parse error before `('
> bitmap.cc:31: warning: unused parameter `struct FILE * f'
> bitmap.cc: In method `void Bitmap::save(FILE *, char = '4') const':
> bitmap.cc:552: parse error before `('
> bitmap.cc:552: parse error before `)'
> bitmap.cc:552: parse error before `)'
> bitmap.cc:553: parse error before `('
> bitmap.cc:565: parse error before `('
> bitmap.cc:567: parse error before `('
> bitmap.cc:570: confused by earlier errors, bailing out
> make: *** [bitmap.o] Error 1

line  32:  int ch = std::getc( f );
line 552:        if( col % step == step - 1 ) ++y;
line 553:        }
line 565:  std::fprintf( f, "P%c\n%d %d\n", filetype, _width, _height );
line 567:  if( filetype == '1' )

Sorry, I can't see any error in these lines of ocrad. Is your C++ 
library defining macros it shouldn't?


> ------------------------------------------------------------------------
> Machinetype:            Intel Pentium II (2 CPUs, 450 MHz);       FreeBSD 4.4.0
>
> g++  -Wall -W -O2 -c -o ucs.o ucs.cc
> In file included from ucs.cc:20:
> ucs.h:105: parse error before `!'
> ucs.h:106: parse error before `!'
> ucs.h:107: parse error before `!'
> ucs.h:110: parse error before `!'
> ucs.h:111: parse error before `!'
> ucs.cc:149: parse error before `('
> ucs.cc:155: parse error before `('
> ucs.cc:161: parse error before `('
> ucs.cc:164: ANSI C++ forbids declaration `code' with no type
> ucs.cc:164: implicit declaration of function `int base_letter(...)'
> ucs.cc:165: parse error before `return'
> ucs.cc: In function `static bool UCS::islower_small(int)':
> ucs.cc:171: parse error before `('
> ucs.cc:179: confused by earlier errors, bailing out
> make: *** [ucs.o] Error 1

FreeBSD uses g++ 2.95. Ocrad don't support it. Please, stop complaining 
about failed compiles with g++ 2.9x and upgrade.


> ------------------------------------------------------------------------
> Machinetype:            SGI Origin/200-4 (180 MHz) (4 CPUs); IRIX 6.5
> g++  -Wall -W -O2 -c -o main.o main.cc
> main.cc: In function `int main(int, char**)':
> main.cc:220: error: `no_argument' undeclared (first use this function)
> main.cc:220: error: (Each undeclared identifier is reported only once for each
>    function it appears in.)
> main.cc:221: error: `required_argument' undeclared (first use this function)
> main.cc:234: error: elements of array `option long_options[]' have incomplete
>    type
> main.cc:234: error: storage size of `long_options' isn't known
> main.cc:237: error: `getopt_long' undeclared (first use this function)
> main.cc:218: error: storage size of `long_options' isn't known
> make: *** [main.o] Error 1

Ocrad uses the function 'getopt_long' defined by GNU libc. As stated in 
the file INSTALL, you need "a C library compatible with GNU libc".


In short:
Ocrad is written in standard C++.
Ocrad needs g++ 3.x and glibc.
Perhaps someday this will change, but compatibility is not an issue now.


Regards.
Antonio Diaz, GNU Ocrad author and maintainer.