Thanks tye.

So I've made an attempt at this, but am still getting XS errors that I can't figure out, and am hoping I'm doing something blatantly wrong, or someone with understanding can spot something else. Here's my Makefile.PL:

use ExtUtils::MakeMaker;
my %options = %{
{
  'INC' => '-I/home/pi/repos/scripts/c/rpi/dht11/library -I/usr/local/
+lib -I/home/pi/repos/wiringPi/wiringPi',
  'NAME' => 'perl_pl_b1a3',
  'TYPEMAPS' => [
    '/home/pi/perl5/perlbrew/perls/perl-5.24.0/lib/5.24.0/ExtUtils/typ
+emap'
  ],
  'VERSION' => '0.00',
  'CCFLAGS' => ' -fwrapv -fno-strict-aliasing -pipe -fstack-protector-
+strong -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=6
+4 -D_FORTIFY_SOURCE=2  -lwiringPi'
}
};
WriteMakefile(%options);

# Remove the Makefile dependency. Causes problems on a few systems.
sub MY::makefile { '' }

[download]

The library I'm trying to load is wiringPi. I've tried also libwiringPi. I've also tried adding -I/usr/local/lib to the CCFLAGS, as well as -L/usr/local/lib. Here's the /usr/local/lib dir that I've included in INC:

libwiringPiDev.so -> libwiringPiDev.so.2.32
libwiringPiDev.so.2.32
libwiringPi.so -> libwiringPi.so.2.32
libwiringPi.so.2.32

[download]

...and the error:

Running Mkbootstrap for perl_pl_b1a3 ()
chmod 644 "perl_pl_b1a3.bs"
cc -c  -I/home/pi/repos/scripts/c/rpi/dht11/library -I/usr/local/lib -
+I/home/pi/repos/wiringPi/wiringPi -fwrapv -fno-strict-aliasing -pipe 
+-fstack-protector-strong -I/usr/local/include -I/usr/local/lib -D_LAR
+GEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2  -lwiringPi 
+-O2   -DVERSION=\"0.00\" -DXS_VERSION=\"0.00\" -fPIC "-I/home/pi/perl
+5/perlbrew/perls/perl-5.24.0/lib/5.24.0/armv7l-linux/CORE"   perl_pl_
+b1a3.c
In file included from perl_pl_b1a3.xs:3:0:
/home/pi/perl5/perlbrew/perls/perl-5.24.0/lib/5.24.0/armv7l-linux/CORE
+/XSUB.h:142:31: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute_
+_’ before ‘void’
 #    define XS_EXTERNAL(name) void name(pTHX_ CV* cv __attribute__unu
+sed__)
                               ^
perl_pl_b1a3.c:163:1: note: in expansion of macro ‘XS_EXTERNAL’
 XS_EXTERNAL(boot_perl_pl_b1a3); /* prototype to pass -Wmissing-protot
+ypes */
 ^
Makefile:331: recipe for target 'perl_pl_b1a3.o' failed
make: *** [perl_pl_b1a3.o] Error 1

[download]

It's like it's not finding the library or something, as I can reproduce this exact behaviour with this simple script, by trying to link to a non-existent library:

use warnings;
use strict;

use Inline C => Config => ccflagsex => '-lblah';
use Inline C => 'END'; 

say();

__END__
__C__

void say()
{
    int x = myget();
    printf("myvar: %d\n", x);
}

[download]

In reply to Re^2: With Inline::C, how to link to external library? (XS) by stevieb
in thread With Inline::C, how to link to external library? by stevieb

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