140 lines
3.4 KiB
Perl
140 lines
3.4 KiB
Perl
#!/usr/bin/env perl
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#*************************************************************************
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# Copyright (c) 2012 UChicago Argonne LLC, as Operator of Argonne
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# National Laboratory.
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# Copyright (c) 2002 The Regents of the University of California, as
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# Operator of Los Alamos National Laboratory.
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# EPICS BASE is distributed subject to a Software License Agreement found
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# in file LICENSE that is included with this distribution.
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#*************************************************************************
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#
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# Author: Kay-Uwe Kasemir
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# Date: 1-30-97
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use strict;
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use FindBin qw($Bin);
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use lib ("$Bin/../../lib/perl");
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use Getopt::Std;
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use File::Basename;
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use EPICS::Path;
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use EPICS::Release;
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use Text::Wrap;
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my $tool = basename($0);
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our ($opt_h, $opt_q, $opt_t, $opt_s, $opt_c);
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our $opt_o = 'envData.c';
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$Getopt::Std::OUTPUT_HELP_VERSION = 1;
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$Text::Wrap::columns = 75;
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HELP_MESSAGE() unless getopts('ho:qt:s:c:') && @ARGV == 1;
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HELP_MESSAGE() if $opt_h;
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my $config = AbsPath(shift);
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my $env_defs = AbsPath('../env/envDefs.h');
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# Parse the ENV_PARAM declarations in envDefs.h
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# to get the param names we are interested in
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#
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open SRC, '<', $env_defs
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or die "$tool: Cannot open $env_defs: $!\n";
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my @vars;
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while (<SRC>) {
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if (m/epicsShareExtern\s+const\s+ENV_PARAM\s+([A-Za-z_]\w*)\s*;/) {
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push @vars, $1;
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}
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}
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close SRC;
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# A list of configure/CONFIG_* files to read
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#
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my @configs = ("$config/CONFIG_ENV", "$config/CONFIG_SITE_ENV");
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if ($opt_t) {
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my $config_arch_env = "$config/os/CONFIG_SITE_ENV.$opt_t";
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push @configs, $config_arch_env
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if -f $config_arch_env;
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}
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my @sources = ($env_defs, @configs);
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# Get values from the config files
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#
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my (%values, @dummy);
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readRelease($_, \%values, \@dummy) foreach @configs;
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expandRelease(\%values);
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# Get values from the command-line
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#
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$values{EPICS_BUILD_COMPILER_CLASS} = $opt_c if $opt_c;
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$values{EPICS_BUILD_OS_CLASS} = $opt_s if $opt_s;
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$values{EPICS_BUILD_TARGET_ARCH} = $opt_t if $opt_t;
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# Warn about vars with no configured value
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#
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my @undefs = grep {!exists $values{$_}} @vars;
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warn "$tool: No value given for $_\n" foreach @undefs;
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print "Generating $opt_o\n" unless $opt_q;
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# Start creating the output
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#
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open OUT, '>', $opt_o
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or die "$tool: Cannot create $opt_o: $!\n";
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my $sources = join "\n", map {" * $_"} @sources;
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print OUT << "END";
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/* Generated file $opt_o
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*
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* Created from
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$sources
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*/
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#include <stddef.h>
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#define epicsExportSharedSymbols
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#include "envDefs.h"
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END
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# Define a default value for each named parameter
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#
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foreach my $var (@vars) {
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my $default = $values{$var};
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if (defined $default) {
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$default =~ s/^"//;
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$default =~ s/"$//;
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}
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else {
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$default = '';
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}
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print OUT "epicsShareDef const ENV_PARAM $var =\n",
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" {\"$var\", \"$default\"};\n";
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}
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# Also provide a list of all defined parameters
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#
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print OUT "\n",
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"epicsShareDef const ENV_PARAM* env_param_list[] = {\n",
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wrap(' ', ' ', join(', ', map("&$_", @vars), 'NULL')),
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"\n};\n";
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close OUT;
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sub HELP_MESSAGE {
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print STDERR "Usage: $tool [options] configure\n",
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" -h Help: Print this message\n",
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" -q Quiet: Only print errors\n",
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" -o file Output filename, default is $opt_o\n",
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" -t arch Target architecture \$(T_A) name\n",
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" -s os Operating system \$(OS_CLASS)\n",
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" -c comp Compiler class \$(CMPLR_CLASS)\n",
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"\n";
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exit 1;
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}
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