Alien::ROOT(3pm)

1Alien::ROOT(3)        User Contributed Perl Documentation       Alien::ROOT(3)
2
3
4

NAME

6       Alien::ROOT - Utility package to install and locate CERN's ROOT library
7

SYNOPSIS

9         use Alien::ROOT;
10
11         my $aroot = Alien::ROOT->new;
12

DESCRIPTION

14       Installs or detects CERN's ROOT library.
15
16       This version of "Alien::ROOT" will download and install "ROOT v5.30.0"
17       if necessary. If an existing (and compatible) installation of ROOT was
18       detected, the module will not download/compile/install a new version of
19       ROOT.
20

METHODS

22   Alien::ROOT->new
23       Creates a new "Alien::ROOT" object, which essentially just has a few
24       convenience methods providing useful information like the path to the
25       ROOT installation ("ROOTSYS" environment variable) and the path to the
26       root-config utility.
27
28   $aroot->installed
29       Determine if a valid installation of ROOT has been detected in the
30       system.  This method will return a true value if it is, or undef
31       otherwise.
32
33       Example code:
34
35         print "okay\n" if $aroot->installed;
36
37   $aroot->run
38       Sets up the ROOT environment (see "setup_environment") and then invokes
39       the ROOT shell by simply calling "root".
40
41   $aroot->setup_environment
42       Sets up the "PATH" and "LD_LIBRARY_PATH" environment variables to point
43       at the correct paths for ROOT.
44
45       Throws an exception if ROOT was not found, so wrap this in an "eval" or
46       check "$aroot->installed" before using this.
47
48   $aroot->version
49       Determine the installed version of ROOT, as a string.
50
51       Example code:
52
53         my $version = $aroot->version;
54
55   $aroot->ldflags
56   $aroot->linker_flags
57       This returns the flags required to link C code with the local
58       installation of ROOT.
59
60       Example code:
61
62         my $ldflags = $aroot->ldflags;
63
64   $aroot->cflags
65   $aroot->compiler_flags
66       This method returns the compiler option flags to compile C++ code which
67       uses the ROOT library (typically in the CFLAGS variable).
68
69       Example code:
70
71         my $cflags = $aroot->cflags;
72
73   $aroot->features
74       This method returns a string of ROOT features that were enabled when
75       ROOT was compiled.
76
77       Example code:
78
79         my $features = $aroot->features;
80         if ($features !~ /\bexplicitlink\b/) {
81           warn "ROOT was built without the --explicitlink option";
82         }
83
84   $aroot->bindir
85       This method returns the path to the executable directory of ROOT.
86
87       Example code:
88
89         my $dir = $aroot->bindir;
90         system(File::Spec->catfile($dir, 'root'));
91
92   $aroot->libdir
93       This method returns the path to the library (lib/) directory of ROOT.
94
95       Example code:
96
97         my $dir = $aroot->libdir;
98
99   $aroot->incdir
100       This method returns the path to the include directory of ROOT.
101
102       Example code:
103
104         my $dir = $aroot->incdir;
105
106   $aroot->etcdir
107       This method returns the path to the 'etc' directory of ROOT.
108
109       Example code:
110
111         my $dir = $aroot->etcdir;
112
113   $aroot->private_root
114       This method returns true if the copy of ROOT that is being used was
115       installed by "Alien::ROOT" and is considered private.
116
117       Example code:
118
119         my $is_private = $aroot->private_root;
120

AUTHOR

122       Steffen Mueller <smueller@cpan.org>
123

ACKNOWLEDGMENTS

125       This package is based upon Jonathan Yu's Alien::libjio and Mattia
126       Barbon's Alien::wxWidgets.  They kindly allowed me to use their work as
127       a starting point.
128

SUPPORT

130       You can find documentation for this module with the perldoc command.
131
132           perldoc Alien::ROOT
133
134       You can also look for information at:
135
136       ·   Search CPAN
137
138           <http://search.cpan.org/dist/Alien-ROOT>
139
140       ·   CPAN Request Tracker
141
142           <http://rt.cpan.org/NoAuth/Bugs.html?Dist=Alien-ROOT>
143
144       ·   CPAN Testers Platform Compatibility Matrix
145
146           <http://cpantesters.org/show/Alien-ROOT.html>
147

REPOSITORY

149       You can access the most recent development version of this module at:
150
151       <git://github.com/tsee/ROOT.git>
152

LICENSE

161       This module is licensed under the GNU General Public License 2.0 or at
162       your discretion, any newer version of the GPL. You can find a copy of
163       the license in the LICENSE file of this package or at
164       <http://www.opensource.org/licenses/gpl-2.0.php>
165
166
167
168perl v5.32.0                      2020-07-28                    Alien::ROOT(3)