Probably not all users are aware of this possibility, thus add a pointer to the README. Also add a useful example.

Signed-off-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com

---

Changes in v2: - new patch

README | 5 +++++ 1 file changed, 5 insertions(+)

diff --git a/README b/README index b53ea7dfe3..b055ae7ef2 100644 --- a/README +++ b/README @@ -3719,6 +3719,11 @@ this behavior and build U-Boot to some external directory: Note that the command line "O=" setting overrides the KBUILD_OUTPUT environment variable.

+User specific CPPFLAGS, AFLAGS and CFLAGS can be passed to the compiler by +setting the according environment variables KCPPFLAGS, KAFLAGS and KCFLAGS. +For example to treat all compiler warnings as errors: + + make KCFLAGS=-Werror

Please be aware that the Makefiles assume you are using GNU make, so for instance on NetBSD you might need to use "gmake" instead of

Add a new option '-E' for treating all compiler warnings as errors. Eventually this will pass 'KCFLAGS=-Werror' to Kbuild.

Signed-off-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com

---

Changes in v2: - replace 'W=err' with 'KCFLAGS=-Werror'

tools/buildman/builder.py | 5 ++++- tools/buildman/builderthread.py | 2 ++ tools/buildman/cmdline.py | 2 ++ tools/buildman/control.py | 3 ++- 4 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/tools/buildman/builder.py b/tools/buildman/builder.py index acb0810457..4e72b7d60d 100644 --- a/tools/buildman/builder.py +++ b/tools/buildman/builder.py @@ -212,7 +212,8 @@ class Builder: gnu_make='make', checkout=True, show_unknown=True, step=1, no_subdirs=False, full_path=False, verbose_build=False, incremental=False, per_board_out_dir=False, - config_only=False, squash_config_y=False): + config_only=False, squash_config_y=False, + warnings_as_errors=False): """Create a new Builder object

Args: @@ -237,6 +238,7 @@ class Builder: board rather than a thread-specific directory config_only: Only configure each build, don't build it squash_config_y: Convert CONFIG options with the value 'y' to '1' + warnings_as_errors: Treat all compiler warnings as errors """ self.toolchains = toolchains self.base_dir = base_dir @@ -270,6 +272,7 @@ class Builder: if not self.squash_config_y: self.config_filenames += EXTRA_CONFIG_FILENAMES

+ self.warnings_as_errors = warnings_as_errors self.col = terminal.Color()

self._re_function = re.compile('(.*): In function.*') diff --git a/tools/buildman/builderthread.py b/tools/buildman/builderthread.py index 9e8ca80c5b..9ac101a5a4 100644 --- a/tools/buildman/builderthread.py +++ b/tools/buildman/builderthread.py @@ -216,6 +216,8 @@ class BuilderThread(threading.Thread): args.append('-s') if self.builder.num_jobs is not None: args.extend(['-j', str(self.builder.num_jobs)]) + if self.builder.warnings_as_errors: + args.append('KCFLAGS=-Werror') config_args = ['%s_defconfig' % brd.target] config_out = '' args.extend(self.builder.toolchains.GetMakeArguments(brd)) diff --git a/tools/buildman/cmdline.py b/tools/buildman/cmdline.py index 74247f0aff..6949d6bf2c 100644 --- a/tools/buildman/cmdline.py +++ b/tools/buildman/cmdline.py @@ -32,6 +32,8 @@ def ParseArgs(): help="Don't build, just configure each commit") parser.add_option('-e', '--show_errors', action='store_true', default=False, help='Show errors and warnings') + parser.add_option('-E', '--warnings-as-errors', action='store_true', + default=False, help='Treat all compiler warnings as errors') parser.add_option('-f', '--force-build', dest='force_build', action='store_true', default=False, help='Force build of boards even if already built') diff --git a/tools/buildman/control.py b/tools/buildman/control.py index 73b1a14fb6..3cac9f7cf6 100644 --- a/tools/buildman/control.py +++ b/tools/buildman/control.py @@ -263,7 +263,8 @@ def DoBuildman(options, args, toolchains=None, make_func=None, boards=None, incremental=options.incremental, per_board_out_dir=options.per_board_out_dir, config_only=options.config_only, - squash_config_y=not options.preserve_config_y) + squash_config_y=not options.preserve_config_y, + warnings_as_errors=options.warnings_as_errors) builder.force_config_on_failure = not options.quick if make_func: builder.do_make = make_func

The build script should not manipulate shell flags (especially '-e'). A non-zero exit value can also be catched with 'cmd || ret=$?'.

Signed-off-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com ---

Changes in v2: None

.travis.yml | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml index 2a98c4bb11..1e55e1b7f1 100644 --- a/.travis.yml +++ b/.travis.yml @@ -101,9 +101,8 @@ script: # # Exit code 129 means warnings only. - if [[ "${BUILDMAN}" != "" ]]; then - set +e; - tools/buildman/buildman -P ${BUILDMAN}; - ret=$?; + ret=0; + tools/buildman/buildman -P ${BUILDMAN} || ret=$?; if [[ $ret -ne 0 && $ret -ne 129 ]]; then tools/buildman/buildman -sdeP ${BUILDMAN}; exit $ret;