1Dev(3) User Contributed Perl Documentation Dev(3)
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6 PDL::Core::Dev - PDL development module
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9 This module encapsulates most of the stuff useful for PDL development
10 and is often used from within Makefile.PL's.
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13 use PDL::Core::Dev;
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16 isbigendian
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18 Is the machine big or little endian?
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20 print "Your machins is big endian.\n" if isbigendian();
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22 returns 1 if the machine is big endian, 0 if little endian, or dies if
23 neither. It uses the "byteorder" element of perl's %Config array.
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25 my $retval = isbigendian();
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27 trylink
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29 a perl configure clone
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31 if (trylink 'libGL', '', 'char glBegin(); glBegin();', '-lGL') {
32 $libs = '-lGLU -lGL';
33 $have_GL = 1;
34 } else {
35 $have_GL = 0;
36 }
37 $maybe =
38 trylink 'libwhatever', $inc, $body, $libs, $cflags,
39 {MakeMaker=>1, Hide=>0, Clean=>1};
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41 Try to link some C-code making up the body of a function with a given
42 set of library specifiers
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44 return 1 if successful, 0 otherwise
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46 trylink $infomsg, $include, $progbody, $libs [,$cflags,{OPTIONS}];
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48 Takes 4 + 2 optional arguments.
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50 · an informational message to print (can be empty)
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52 · any commands to be included at the top of the generated C program
53 (typically something like "#include "mylib.h"")
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55 · the body of the program (in function main)
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57 · library flags to use for linking. Preprocessing by MakeMaker
58 should be performed as needed (see options and example).
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60 · compilation flags. For example, something like "-I/usr/local/lib".
61 Optional argument. Empty if omitted.
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63 OPTIONS
64 MakeMaker
65 Preprocess library strings in the way MakeMaker does things.
66 This is advisable to ensure that your code will actually work
67 after the link specs have been processed by MakeMaker.
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69 Hide
70 Controls if linking output etc is hidden from the user or not.
71 On by default except within the build of the PDL distribution
72 where the config value set in perldl.conf prevails.
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74 Clean
75 Remove temporary files. Enabled by default. You might want to
76 switch it off during debugging.
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80perl v5.8.8 2002-05-21 Dev(3)