1F77(3) User Contributed Perl Documentation F77(3)
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6 ExtUtils::F77 - Simple interface to F77 libs
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9 This module tries to figure out how to link C programs with Fortran
10 subroutines on your system. Basically one must add a list of Fortran
11 runtime libraries. The problem is their location and name varies with
12 each OS/compiler combination! It was originally developed to make
13 building and installation of the PGPLOT module easier, which links to
14 the pgplot Fortran graphics library. It is now used by a number of perl
15 modules.
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17 This module tries to implement a simple 'rule-of-thumb' database for
18 various flavours of UNIX systems. A simple self-documenting Perl
19 database of knowledge/code for figuring out how to link for various
20 combinations of OS and compiler is embedded in the modules Perl code.
21 Please help save the world by submitted patches for new database
22 entries for your system at <https://github.com/PDLPorters/extutils-f77>
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24 Note the default on most systems is now to search for a generic 'GNU'
25 compiler which can be gfortran, g77, g95 or fort77 (in that order based
26 on usage) and then find the appropriate link libraries automatically.
27 (This is the 'Generic' 'GNU' database entry in the code.)
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29 The target compiler can be explicitly overriden by setting the
30 environment variable F77, e.g.
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32 % setenv F77 "x86_64-pc-linux-gnu-gfortran"
33 % perl -MExtUtils::F77 -e 'print ExtUtils::F77->compiler, "\n"'
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35 The library list which the module returns can be explicitly overridden
36 by setting the environment variable F77LIBS, e.g.
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38 % setenv F77LIBS "-lfoo -lbar"
39 % perl -MExtUtils::F77 -e 'print ExtUtils::F77->runtime, "\n"'
40 ...
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43 use ExtUtils::F77; # Automatic guess
44 use ExtUtils::F77 qw(sunos); # Specify system
45 use ExtUtils::F77 qw(linux g77); # Specify system and compiler
46 $fortranlibs = ExtUtils::F77->runtime;
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49 The following are all class methods.
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51 runtime
52 Returns a list of F77 runtime libraries.
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54 $fortranlibs = ExtUtils::F77->runtime;
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56 runtimeok
57 Returns TRUE only if runtime libraries have been found successfully.
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59 trail_
60 Returns true if F77 names have trailing underscores.
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62 compiler
63 Returns command to execute the compiler (e.g. 'f77').
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65 cflags
66 Returns compiler flags.
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68 testcompiler
69 Test to see if compiler actually works.
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72 To debug this module, and/or get more information about its workings,
73 set $ExtUtils::F77::DEBUG to a true value. If set, it will "warn"
74 various information about its operations.
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76 As of version 1.22, this module will no longer print or warn if it is
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80 PDL (PDL::Minuit and PDL::Slatec), PGPLOT
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83 Karl Glazebrook, with many other contributions (see git repository at
84 https://github.com/PDLPorters/extutils-f77)
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88perl v5.36.0 2022-07-22 F77(3)