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git-commit-vandalism/contrib/buildsystems/engine.pl
Dennis Ameling e66590348a ci(vs-build): stop passing the iconv library location explicitly 
Something changed in `vcpkg` (which we use in our Visual C++ build to
provide the dependencies such as libcurl) and our `vs-build` job started
failing in CI. The reason is that we had a work-around in place to help
CMake find iconv, and this work-around is neither needed nor does it
work anymore.

For the full discussion with the vcpkg project, see this comment:
https://github.com/microsoft/vcpkg/issues/14780#issuecomment-735368280

Signed-off-by: Dennis Ameling <dennis@dennisameling.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-12-04 12:03:15 -08:00

395 lines
12 KiB
Perl
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#!/usr/bin/perl -w
######################################################################
# Do not call this script directly!
#
# The generate script ensures that @INC is correct before the engine
# is executed.
#
# Copyright (C) 2009 Marius Storm-Olsen <mstormo@gmail.com>
######################################################################
use strict;
use File::Basename;
use File::Spec;
use Cwd;
use Generators;
use Text::ParseWords;
my (%build_structure, %compile_options, @makedry);
my $out_dir = getcwd();
my $git_dir = $out_dir;
$git_dir =~ s=\\=/=g;
$git_dir = dirname($git_dir) while (!-e "$git_dir/git.c" && "$git_dir" ne "");
die "Couldn't find Git repo" if ("$git_dir" eq "");
my @gens = Generators::available();
my $gen = "Vcproj";
sub showUsage
{
my $genlist = join(', ', @gens);
print << "EOM";
generate usage:
-g <GENERATOR> --gen <GENERATOR> Specify the buildsystem generator (default: $gen)
Available: $genlist
-o <PATH> --out <PATH> Specify output directory generation (default: .)
--make-out <PATH> Write the output of GNU Make into a file
-i <FILE> --in <FILE> Specify input file, instead of running GNU Make
-h,-? --help This help
EOM
exit 0;
}
# Parse command-line options
my $make_out;
while (@ARGV) {
my $arg = shift @ARGV;
if ("$arg" eq "-h" || "$arg" eq "--help" || "$arg" eq "-?") {
showUsage();
exit(0);
} elsif("$arg" eq "--out" || "$arg" eq "-o") {
$out_dir = shift @ARGV;
} elsif("$arg" eq "--make-out") {
$make_out = shift @ARGV;
} elsif("$arg" eq "--gen" || "$arg" eq "-g") {
$gen = shift @ARGV;
} elsif("$arg" eq "--in" || "$arg" eq "-i") {
my $infile = shift @ARGV;
open(F, "<$infile") || die "Couldn't open file $infile";
@makedry = <F>;
close(F);
} else {
die "Unknown option: " . $arg;
}
}
# NOT using File::Spec->rel2abs($path, $base) here, as
# it fails badly for me in the msysgit environment
$git_dir = File::Spec->rel2abs($git_dir);
$out_dir = File::Spec->rel2abs($out_dir);
my $rel_dir = makeOutRel2Git($git_dir, $out_dir);
# Print some information so the user feels informed
print << "EOM";
-----
Generator: $gen
Git dir: $git_dir
Out dir: $out_dir
-----
Running GNU Make to figure out build structure...
EOM
# Pipe a make --dry-run into a variable, if not already loaded from file
# Capture the make dry stderr to file for review (will be empty for a release build).
my $ErrsFile = "msvc-build-makedryerrors.txt";
@makedry = `make -C $git_dir -n MSVC=1 SKIP_VCPKG=1 V=1 2>$ErrsFile`
if !@makedry;
# test for an empty Errors file and remove it
unlink $ErrsFile if -f -z $ErrsFile;
if (defined $make_out) {
open OUT, ">" . $make_out;
print OUT @makedry;
close OUT;
}
# Parse the make output into usable info
parseMakeOutput();
# Finally, ask the generator to start generating..
Generators::generate($gen, $git_dir, $out_dir, $rel_dir, %build_structure);
# main flow ends here
# -------------------------------------------------------------------------------------------------
# 1) path: /foo/bar/baz 2) path: /foo/bar/baz 3) path: /foo/bar/baz
# base: /foo/bar/baz/temp base: /foo/bar base: /tmp
# rel: .. rel: baz rel: ../foo/bar/baz
sub makeOutRel2Git
{
my ($path, $base) = @_;
my $rel;
if ("$path" eq "$base") {
return ".";
} elsif ($base =~ /^$path/) {
# case 1
my $tmp = $base;
$tmp =~ s/^$path//;
foreach (split('/', $tmp)) {
$rel .= "../" if ("$_" ne "");
}
} elsif ($path =~ /^$base/) {
# case 2
$rel = $path;
$rel =~ s/^$base//;
$rel = "./$rel";
} else {
my $tmp = $base;
foreach (split('/', $tmp)) {
$rel .= "../" if ("$_" ne "");
}
$rel .= $path;
}
$rel =~ s/\/\//\//g; # simplify
$rel =~ s/\/$//; # don't end with /
return $rel;
}
sub parseMakeOutput
{
print "Parsing GNU Make output to figure out build structure...\n";
my $line = 0;
while (my $text = shift @makedry) {
my $ate_next;
do {
$ate_next = 0;
$line++;
chomp $text;
chop $text if ($text =~ /\r$/);
if ($text =~ /\\$/) {
$text =~ s/\\$//;
$text .= shift @makedry;
$ate_next = 1;
}
} while($ate_next);
if ($text =~ /^test /) {
# options to test (eg -o) may be mistaken for linker options
next;
}
if ($text =~ /^(mkdir|msgfmt) /) {
# options to the Portable Object translations
# the line "mkdir ... && msgfmt ..." contains no linker options
next;
}
if($text =~ / -c /) {
# compilation
handleCompileLine($text, $line);
} elsif ($text =~ / -o /) {
# linking executable
handleLinkLine($text, $line);
} elsif ($text =~ /\.o / && $text =~ /\.a /) {
# libifying
handleLibLine($text, $line);
#
# } elsif ($text =~ /^cp /) {
# # copy file around
#
# } elsif ($text =~ /^rm -f /) {
# # shell command
#
# } elsif ($text =~ /^make[ \[]/) {
# # make output
#
# } elsif ($text =~ /^echo /) {
# # echo to file
#
# } elsif ($text =~ /^if /) {
# # shell conditional
#
# } elsif ($text =~ /^tclsh /) {
# # translation stuff
#
# } elsif ($text =~ /^umask /) {
# # handling boilerplates
#
# } elsif ($text =~ /\$\(\:\)/) {
# # ignore
#
# } elsif ($text =~ /^FLAGS=/) {
# # flags check for dependencies
#
# } elsif ($text =~ /^'\/usr\/bin\/perl' -MError -e/) {
# # perl commands for copying files
#
# } elsif ($text =~ /generate-cmdlist\.sh/) {
# # command for generating list of commands
#
# } elsif ($text =~ /new locations or Tcl/) {
# # command for detecting Tcl/Tk changes
#
# } elsif ($text =~ /mkdir -p/) {
# # command creating path
#
# } elsif ($text =~ /: no custom templates yet/) {
# # whatever
#
# } else {
# print "Unhandled (line: $line): $text\n";
}
}
# use Data::Dumper;
# print "Parsed build structure:\n";
# print Dumper(%build_structure);
}
# variables for the compilation part of each step
my (@defines, @incpaths, @cflags, @sources);
sub clearCompileStep
{
@defines = ();
@incpaths = ();
@cflags = ();
@sources = ();
}
sub removeDuplicates
{
my (%dupHash, $entry);
%dupHash = map { $_, 1 } @defines;
@defines = keys %dupHash;
%dupHash = map { $_, 1 } @incpaths;
@incpaths = keys %dupHash;
%dupHash = map { $_, 1 } @cflags;
@cflags = keys %dupHash;
}
sub handleCompileLine
{
my ($line, $lineno) = @_;
my @parts = shellwords($line);
my $sourcefile;
shift(@parts); # ignore cmd
while (my $part = shift @parts) {
if ("$part" eq "-o") {
# ignore object file
shift @parts;
} elsif ("$part" eq "-c") {
# ignore compile flag
} elsif ("$part" eq "-c") {
} elsif ($part =~ /^.?-I/) {
push(@incpaths, $part);
} elsif ($part =~ /^.?-D/) {
push(@defines, $part);
} elsif ($part =~ /^-/) {
push(@cflags, $part);
} elsif ($part =~ /\.(c|cc|cpp)$/) {
$sourcefile = $part;
} else {
die "Unhandled compiler option @ line $lineno: $part";
}
}
@{$compile_options{"${sourcefile}_CFLAGS"}} = @cflags;
@{$compile_options{"${sourcefile}_DEFINES"}} = @defines;
@{$compile_options{"${sourcefile}_INCPATHS"}} = @incpaths;
clearCompileStep();
}
sub handleLibLine
{
my ($line, $lineno) = @_;
my (@objfiles, @lflags, $libout, $part);
# kill cmd and rm 'prefix'
$line =~ s/^rm -f .* && .* rcs //;
my @parts = shellwords($line);
while ($part = shift @parts) {
if ($part =~ /^-/) {
push(@lflags, $part);
} elsif ($part =~ /\.(o|obj)$/) {
push(@objfiles, $part);
} elsif ($part =~ /\.(a|lib)$/) {
$libout = $part;
$libout =~ s/\.a$//;
} else {
die "Unhandled lib option @ line $lineno: $part";
}
}
# print "LibOut: '$libout'\nLFlags: @lflags\nOfiles: @objfiles\n";
# exit(1);
foreach (@objfiles) {
my $sourcefile = $_;
$sourcefile =~ s/\.o$/.c/;
push(@sources, $sourcefile);
push(@cflags, @{$compile_options{"${sourcefile}_CFLAGS"}});
push(@defines, @{$compile_options{"${sourcefile}_DEFINES"}});
push(@incpaths, @{$compile_options{"${sourcefile}_INCPATHS"}});
}
removeDuplicates();
push(@{$build_structure{"LIBS"}}, $libout);
@{$build_structure{"LIBS_${libout}"}} = ("_DEFINES", "_INCLUDES", "_CFLAGS", "_SOURCES",
"_OBJECTS");
@{$build_structure{"LIBS_${libout}_DEFINES"}} = @defines;
@{$build_structure{"LIBS_${libout}_INCLUDES"}} = @incpaths;
@{$build_structure{"LIBS_${libout}_CFLAGS"}} = @cflags;
@{$build_structure{"LIBS_${libout}_LFLAGS"}} = @lflags;
@{$build_structure{"LIBS_${libout}_SOURCES"}} = @sources;
@{$build_structure{"LIBS_${libout}_OBJECTS"}} = @objfiles;
clearCompileStep();
}
sub handleLinkLine
{
my ($line, $lineno) = @_;
my (@objfiles, @lflags, @libs, $appout, $part);
my @parts = shellwords($line);
shift(@parts); # ignore cmd
while ($part = shift @parts) {
if ($part =~ /^-IGNORE/) {
push(@lflags, $part);
} elsif ($part =~ /^-[GRIMDO]/) {
# eat compiler flags
} elsif ("$part" eq "-o") {
$appout = shift @parts;
} elsif ("$part" eq "-lz") {
push(@libs, "zlib.lib");
} elsif ("$part" eq "-lcrypto") {
push(@libs, "libcrypto.lib");
} elsif ("$part" eq "-lssl") {
push(@libs, "libssl.lib");
} elsif ("$part" eq "-lcurl") {
push(@libs, "libcurl.lib");
} elsif ("$part" eq "-lexpat") {
push(@libs, "libexpat.lib");
} elsif ("$part" eq "-liconv") {
push(@libs, "iconv.lib");
} elsif ($part =~ /^[-\/]/) {
push(@lflags, $part);
} elsif ($part =~ /\.(a|lib)$/) {
$part =~ s/\.a$/.lib/;
push(@libs, $part);
} elsif ($part eq 'invalidcontinue.obj') {
# ignore - known to MSVC
} elsif ($part =~ /\.o$/) {
push(@objfiles, $part);
} elsif ($part =~ /\.obj$/) {
# do nothing, 'make' should not be producing .obj, only .o files
} else {
die "Unhandled link option @ line $lineno: $part";
}
}
# print "AppOut: '$appout'\nLFlags: @lflags\nLibs : @libs\nOfiles: @objfiles\n";
# exit(1);
foreach (@objfiles) {
my $sourcefile = $_;
$sourcefile =~ s/\.o$/.c/;
push(@sources, $sourcefile);
push(@cflags, @{$compile_options{"${sourcefile}_CFLAGS"}});
push(@defines, @{$compile_options{"${sourcefile}_DEFINES"}});
push(@incpaths, @{$compile_options{"${sourcefile}_INCPATHS"}});
}
removeDuplicates();
removeDuplicates();
push(@{$build_structure{"APPS"}}, $appout);
@{$build_structure{"APPS_${appout}"}} = ("_DEFINES", "_INCLUDES", "_CFLAGS", "_LFLAGS",
"_SOURCES", "_OBJECTS", "_LIBS");
@{$build_structure{"APPS_${appout}_DEFINES"}} = @defines;
@{$build_structure{"APPS_${appout}_INCLUDES"}} = @incpaths;
@{$build_structure{"APPS_${appout}_CFLAGS"}} = @cflags;
@{$build_structure{"APPS_${appout}_LFLAGS"}} = @lflags;
@{$build_structure{"APPS_${appout}_SOURCES"}} = @sources;
@{$build_structure{"APPS_${appout}_OBJECTS"}} = @objfiles;
@{$build_structure{"APPS_${appout}_LIBS"}} = @libs;
clearCompileStep();
}
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