Skip to content

Bazel build implementation, doesn't provide options for the compilation modes opt and debug #2395

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 11 commits into from
Jun 12, 2025
Merged

Bazel build implementation, doesn't provide options for the compilation modes opt and debug #2395

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
11 commits
Select commit Hold shift + click to select a range
c565e26
Bazel add default compliation args for opt and debug. Can be overriden
NolanBrad Apr 3, 2025
39dc067
Add docstrings for new compilation mode override flags
NolanBrad Apr 4, 2025
f956772
Remove cc_args_list shims, which arent needed anymore for cc_feature
NolanBrad Apr 4, 2025
525aa94
Add Compilation mode overrides to the BAZEL_ONLY_ALLOWLIST, these don…
NolanBrad Apr 4, 2025
e346e6d
For completness add the fastbuild default options, and override flag
NolanBrad Apr 4, 2025
f5b3b9f
Remove the default options for fastbuiild, as the bazel doc defaults …
NolanBrad Apr 4, 2025
9ac79e0
Rename the config and constraint labels from OVERRIDE to REMOVE_DEFS
NolanBrad Apr 5, 2025
9ae798d
Merge branch 'develop' into Bazel-default-compilation-args
NolanBrad Apr 13, 2025
0bbbe6d
Change naming of flags from PICO_COMPILATION_XXX_REMOVE_DEFS to PICO_…
NolanBrad Apr 14, 2025
c7b4c9b
Fixup spellling mistakes, and comments
NolanBrad Apr 15, 2025
55344e6
Fix typo PICO_COMPILATION_NO_FASBUILD_ARGS to FASTBUILD
NolanBrad Apr 21, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 10 additions & 0 deletions bazel/config/BUILD.bazel
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -294,3 +294,13 @@ label_flag(
name = "PICO_FREERTOS_LIB",
build_setting_default = "//bazel:empty_cc_lib",
)

Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Please add docstrings above these and add them to the exclusion list in BAZEL_ONLY_ALLOWLIST here.

Copy link
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Ok, Thanks. These have been added.

bool_flag(
name = "PICO_COMPILATION_OPT_OVERRIDE",
build_setting_default = False,
)

bool_flag(
name = "PICO_COMPILATION_DEBUG_OVERRIDE",
build_setting_default = False,
)
10 changes: 10 additions & 0 deletions bazel/constraint/BUILD.bazel
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -252,3 +252,13 @@ label_flag_matches(
flag = "//bazel/config:PICO_FREERTOS_LIB",
value = "//bazel:empty_cc_lib",
)

config_setting(
name = "pico_compiliation_opt_override",
flag_values = {"//bazel/config:PICO_COMPILATION_OPT_OVERRIDE": "True"},
)

config_setting(
name = "pico_compiliation_debug_override",
flag_values = {"//bazel/config:PICO_COMPILATION_DEBUG_OVERRIDE": "True"},
)
53 changes: 41 additions & 12 deletions bazel/toolchain/BUILD.bazel
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -89,15 +89,33 @@ cc_args(
)

cc_args(
name = "opt_debug_args",
name = "debug_args",
actions = [
"@rules_cc//cc/toolchains/actions:compile_actions",
"@rules_cc//cc/toolchains/actions:link_actions",
],
args = [
"-Og", # TODO: Make this configurable.
"-g3",
args = select({
"//bazel/constraint:pico_compiliation_debug_override": [],
"//conditions:default": [
"-Og",
"-g3",
],
})
)

cc_args(
name = "opt_args",
actions = [
"@rules_cc//cc/toolchains/actions:compile_actions",
"@rules_cc//cc/toolchains/actions:link_actions",
],
args = select({
"//bazel/constraint:pico_compiliation_opt_override": [],
"//conditions:default": [
"-O2",
"-DNDEBUG",
],
})
)

configurable_toolchain_feature(
Expand Down Expand Up @@ -134,16 +152,27 @@ configurable_toolchain_feature(

# TODO: Make this shim unnecessary.
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

These shims aren't necessary anymore, you can just directly list opt_args and debug_args in the cc_feature rules.

Copy link
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Ok, Thanks. You are right, they weren't needed. Removed

cc_args_list(
name = "all_opt_debug_args",
args = [":opt_debug_args"],
name = "all_debug_args",
args = [":debug_args"],
)

cc_args_list(
name = "all_opt_args",
args = [":opt_args"],
)

cc_feature(
name = "override_debug",
args = [":all_opt_debug_args"],
name = "dbg",
args = [":all_debug_args"],
overrides = "@rules_cc//cc/toolchains/features:dbg",
)

cc_feature(
name = "opt",
args = [":all_opt_args"],
overrides = "@rules_cc//cc/toolchains/features:opt",
)

HOSTS = (
("linux", "x86_64"),
("linux", "aarch64"),
Expand Down Expand Up @@ -180,7 +209,8 @@ _HOST_CPU_CONSTRAINTS = {
tags = ["manual"], # Don't try to build this in wildcard builds.
known_features = [
"@rules_cc//cc/toolchains/args:experimental_replace_legacy_action_config_features",
"@pico-sdk//bazel/toolchain:override_debug",
"@pico-sdk//bazel/toolchain:dbg",
"@pico-sdk//bazel/toolchain:opt",
"@pico-sdk//bazel/toolchain:gc_sections",
"@pico-sdk//bazel/toolchain:cxx_no_exceptions",
"@pico-sdk//bazel/toolchain:cxx_no_rtti",
Expand All @@ -189,7 +219,6 @@ _HOST_CPU_CONSTRAINTS = {
],
enabled_features = [
"@rules_cc//cc/toolchains/args:experimental_replace_legacy_action_config_features",
"@pico-sdk//bazel/toolchain:override_debug",
] + select({
"//bazel/constraint:pico_no_gc_sections_enabled": [],
"//conditions:default": [":gc_sections"],
Expand Down Expand Up @@ -232,7 +261,8 @@ _HOST_CPU_CONSTRAINTS = {
tags = ["manual"], # Don't try to build this in wildcard builds.
known_features = [
"@rules_cc//cc/toolchains/args:experimental_replace_legacy_action_config_features",
"@pico-sdk//bazel/toolchain:override_debug",
"@pico-sdk//bazel/toolchain:dbg",
"@pico-sdk//bazel/toolchain:opt",
"@pico-sdk//bazel/toolchain:gc_sections",
"@pico-sdk//bazel/toolchain:cxx_no_exceptions",
"@pico-sdk//bazel/toolchain:cxx_no_rtti",
Expand All @@ -241,7 +271,6 @@ _HOST_CPU_CONSTRAINTS = {
],
enabled_features = [
"@rules_cc//cc/toolchains/args:experimental_replace_legacy_action_config_features",
"@pico-sdk//bazel/toolchain:override_debug",
] + select({
"//bazel/constraint:pico_no_gc_sections_enabled": [],
"//conditions:default": [":gc_sections"],
Expand Down