[buildbot] phase1: support to request specific CC / CXX versions

LEDE Commits lede-commits at lists.infradead.org
Sun Jan 8 11:10:51 PST 2017


jow pushed a commit to buildbot.git, branch master:
https://git.lede-project.org/7e4463d19ce9a964ee9fd1ee95ecd3668feb5975

commit 7e4463d19ce9a964ee9fd1ee95ecd3668feb5975
Author: Jo-Philipp Wich <jo at mein.io>
AuthorDate: Sun Jan 8 19:43:11 2017 +0100

    phase1: support to request specific CC / CXX versions
    
    In order to ensure the portability of the resulting SDK to a broad range of
    systems, add support to request specific host compiler versions by overriding
    the CC and CXX environment variables.
    
    Also ship a script which aids in locating proper executables.
    
    Signed-off-by: Jo-Philipp Wich <jo at mein.io>
---
 phase1/config.ini.example |  1 +
 phase1/findbin.pl         | 69 +++++++++++++++++++++++++++++++++++++++++++++
 phase1/master.cfg         | 72 +++++++++++++++++++++++++++++++++++++++++++++--
 3 files changed, 139 insertions(+), 3 deletions(-)

diff --git a/phase1/config.ini.example b/phase1/config.ini.example
index dcacc5f..bfbe837 100644
--- a/phase1/config.ini.example
+++ b/phase1/config.ini.example
@@ -5,6 +5,7 @@ buildbot_url = http://phase1.builds.lede-project.org/
 homedir = .
 expire = 1209600
 port = 9989
+cc_version = le 4.9
 
 [status]
 bind = tcp:8010:interface=127.0.0.1
diff --git a/phase1/findbin.pl b/phase1/findbin.pl
new file mode 100755
index 0000000..5c9716a
--- /dev/null
+++ b/phase1/findbin.pl
@@ -0,0 +1,69 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+
+sub vernum($) {
+	if ($_[0] =~  m!^((?:\d+\.)+\d+)$!) {
+		my ($maj, $min) = split /\./, $1;
+		return int($maj) * 256 + int($min);
+	}
+
+	return 0;
+}
+
+sub vercmp($$$) {
+	my ($op, $v1, $v2) = @_;
+
+	if    ($op eq 'lt') { return $v1  < $v2 }
+	elsif ($op eq 'le') { return $v1 <= $v2 }
+	elsif ($op eq 'gt') { return $v1  > $v2 }
+	elsif ($op eq 'ge') { return $v1 >= $v2 }
+	elsif ($op eq 'eq') { return $v1 == $v2 }
+
+	return 0;
+}
+
+sub findbin($$$) {
+	my ($basename, $compare, $maxvstr) = @_;
+
+	my $lastversion = 0;
+	my $cmpversion = vernum($maxvstr);
+	my $prog = undef;
+
+	foreach my $dir (split /:/, $ENV{'PATH'}) {
+		foreach my $bin (glob("$dir/$basename?*"), "$dir/$basename") {
+			if (-x $bin && open BIN, '-|', $bin, '--version') {
+				my $vers = 0;
+				my $line = readline(BIN) || '';
+
+				foreach my $token (split /\s+/, $line) {
+					$vers = vernum($token);
+					last if $vers > 0;
+				}
+
+				if ($vers > 0 && (!$cmpversion || vercmp($compare, $vers, $cmpversion))) {
+					if ($vers > $lastversion) {
+						$lastversion = $vers;
+						$prog = $bin;
+					}
+				}
+
+				close BIN;
+			}
+		}
+	}
+
+	return $prog;
+}
+
+my $bin = findbin($ARGV[0], $ARGV[1], $ARGV[2]);
+
+if (defined $bin) {
+	printf "%s\n", $bin;
+	exit 0;
+}
+else {
+	warn "Cannot find a $ARGV[0] command with version $ARGV[1] $ARGV[2]\n";
+	exit 1;
+}
diff --git a/phase1/master.cfg b/phase1/master.cfg
index e1a74c4..a87b45e 100644
--- a/phase1/master.cfg
+++ b/phase1/master.cfg
@@ -56,6 +56,10 @@ c['mergeRequests'] = True
 home_dir = os.path.abspath(ini.get("general", "homedir"))
 tree_expire = 0
 other_builds = 0
+cc_version = None
+
+cc_command = "gcc"
+cxx_command = "g++"
 
 if ini.has_option("general", "expire"):
 	tree_expire = ini.getint("general", "expire")
@@ -63,6 +67,11 @@ if ini.has_option("general", "expire"):
 if ini.has_option("general", "other_builds"):
 	other_builds = ini.getint("general", "other_builds")
 
+if ini.has_option("general", "cc_version"):
+	cc_version = ini.get("general", "cc_version").split()
+	if len(cc_version) == 1:
+		cc_version = ["eq", cc_version[0]]
+
 repo_url = ini.get("repo", "url")
 repo_branch = "master"
 
@@ -213,6 +222,27 @@ def GetNumJobs(props):
 	else:
 		return 1
 
+def GetCC(props):
+	if props.hasProperty("cc_command"):
+		return props["cc_command"]
+	else:
+		return "gcc"
+
+def GetCXX(props):
+	if props.hasProperty("cxx_command"):
+		return props["cxx_command"]
+	else:
+		return "g++"
+
+def MakeEnv(overrides=None):
+	env = {
+		'CC': WithProperties("%(cc)s", cc=GetCC),
+		'CXX': WithProperties("%(cxx)s", cxx=GetCXX)
+	}
+	if overrides is not None:
+		env.update(overrides)
+	return env
+
 
 c['builders'] = []
 
@@ -289,6 +319,27 @@ for target in targets:
 		description = "Finding number of CPUs",
 		command = ["nproc"]))
 
+	# find gcc and g++ compilers
+	if cc_version is not None:
+		factory.addStep(FileDownload(
+			mastersrc = "findbin.pl",
+			slavedest = "../findbin.pl",
+			mode = 0755))
+
+		factory.addStep(SetProperty(
+			name = "gcc",
+			property = "cc_command",
+			description = "Finding gcc command",
+			command = ["../findbin.pl", "gcc", cc_version[0], cc_version[1]],
+			haltOnFailure = True))
+
+		factory.addStep(SetProperty(
+			name = "g++",
+			property = "cxx_command",
+			description = "Finding g++ command",
+			command = ["../findbin.pl", "g++", cc_version[0], cc_version[1]],
+			haltOnFailure = True))
+
 	# expire tree if needed
 	if tree_expire > 0:
 		factory.addStep(FileDownload(
@@ -310,6 +361,7 @@ for target in targets:
 			name = tuple[1],
 			description = 'User-requested "make %s"' % tuple[1],
 			command = ["make", tuple[1], "V=s"],
+			env = MakeEnv(),
 			doStepIf = IsCleanRequested(tuple[0])
 		))
 
@@ -388,13 +440,15 @@ for target in targets:
 	factory.addStep(ShellCommand(
 		name = "updatefeeds",
 		description = "Updating feeds",
-		command=["./scripts/feeds", "update"]))
+		command=["./scripts/feeds", "update"],
+		env = MakeEnv()))
 
 	# feed
 	factory.addStep(ShellCommand(
 		name = "installfeeds",
 		description = "Installing feeds",
-		command=["./scripts/feeds", "install", "-a"]))
+		command=["./scripts/feeds", "install", "-a"],
+		env = MakeEnv()))
 
 	# seed config
 	factory.addStep(FileDownload(
@@ -419,7 +473,8 @@ for target in targets:
 	factory.addStep(ShellCommand(
 		name = "defconfig",
 		description = "Populating .config",
-		command = ["make", "defconfig"]
+		command = ["make", "defconfig"],
+		env = MakeEnv()
 	))
 
 	# check arch
@@ -458,6 +513,7 @@ for target in targets:
 		name = "dltar",
 		description = "Building GNU tar",
 		command = ["make", WithProperties("-j%(jobs)d", jobs=GetNumJobs), "tools/tar/install", "V=s"],
+		env = MakeEnv(),
 		haltOnFailure = True
 	))
 
@@ -466,6 +522,7 @@ for target in targets:
 		name = "dlrun",
 		description = "Populating dl/",
 		command = ["make", WithProperties("-j%(jobs)d", jobs=GetNumJobs), "download", "V=s"],
+		env = MakeEnv(),
 		logEnviron = False,
 		locks = [dlLock.access('exclusive')]
 	))
@@ -481,6 +538,7 @@ for target in targets:
 		name = "tools",
 		description = "Building tools",
 		command = ["make", WithProperties("-j%(jobs)d", jobs=GetNumJobs), "tools/install", "V=s"],
+		env = MakeEnv(),
 		haltOnFailure = True
 	))
 
@@ -488,6 +546,7 @@ for target in targets:
 		name = "toolchain",
 		description = "Building toolchain",
 		command=["make", WithProperties("-j%(jobs)d", jobs=GetNumJobs), "toolchain/install", "V=s"],
+		env = MakeEnv(),
 		haltOnFailure = True
 	))
 
@@ -495,6 +554,7 @@ for target in targets:
 		name = "kmods",
 		description = "Building kmods",
 		command=["make", WithProperties("-j%(jobs)d", jobs=GetNumJobs), "target/compile", "V=s", "IGNORE_ERRORS=n m", "BUILD_LOG=1"],
+		env = MakeEnv(),
 		#env={'BUILD_LOG_DIR': 'bin/%s' %(ts[0])},
 		haltOnFailure = True
 	))
@@ -503,6 +563,7 @@ for target in targets:
 		name = "pkgbuild",
 		description = "Building packages",
 		command=["make", WithProperties("-j%(jobs)d", jobs=GetNumJobs), "package/compile", "V=s", "IGNORE_ERRORS=n m", "BUILD_LOG=1"],
+		env = MakeEnv(),
 		#env={'BUILD_LOG_DIR': 'bin/%s' %(ts[0])},
 		haltOnFailure = True
 	))
@@ -512,6 +573,7 @@ for target in targets:
 		name = "pkginstall",
 		description = "Installing packages",
 		command=["make", WithProperties("-j%(jobs)d", jobs=GetNumJobs), "package/install", "V=s"],
+		env = MakeEnv(),
 		haltOnFailure = True
 	))
 
@@ -519,6 +581,7 @@ for target in targets:
 		name = "pkgindex",
 		description = "Indexing packages",
 		command=["make", WithProperties("-j%(jobs)d", jobs=GetNumJobs), "package/index", "V=s"],
+		env = MakeEnv(),
 		haltOnFailure = True
 	))
 
@@ -527,6 +590,7 @@ for target in targets:
 		name = "images",
 		description = "Building images",
 		command=["make", WithProperties("-j%(jobs)d", jobs=GetNumJobs), "target/install", "V=s"],
+		env = MakeEnv(),
 		haltOnFailure = True
 	))
 
@@ -534,6 +598,7 @@ for target in targets:
 		name = "diffconfig",
 		description = "Generating config.seed",
 		command=["make", "-j1", "diffconfig", "V=s"],
+		env = MakeEnv(),
 		haltOnFailure = True
 	))
 
@@ -541,6 +606,7 @@ for target in targets:
 		name = "checksums",
 		description = "Calculating checksums",
 		command=["make", "-j1", "checksum", "V=s"],
+		env = MakeEnv(),
 		haltOnFailure = True
 	))
 



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