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fix(cmake): Explicitly use the logical CPU count when JOBS is unset. #116

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fix(cmake): Explicitly use the logical CPU count when JOBS is unset. #116

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9da070a
fix(cmake): Only pass --parallel when JOBS is set, matching boost.
jackluo923 Jun 30, 2026
88d0d96
fix(cmake): Bound build parallelism to the CPU count when JOBS is unset.
jackluo923 Jun 30, 2026
411fd33
docs(cmake): Drop fragile boost cross-ref from JOBS param doc.
jackluo923 Jun 30, 2026
32f8c22
Update exports/taskfiles/utils/cmake.yaml
jackluo923 Jun 30, 2026
b262b05
Update exports/taskfiles/utils/cmake.yaml
jackluo923 Jun 30, 2026
8f1ac92
Update exports/taskfiles/utils/cmake.yaml
jackluo923 Jun 30, 2026
103e7a9
Update exports/taskfiles/utils/cmake.yaml
Bill-hbrhbr Jun 30, 2026
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16 changes: 13 additions & 3 deletions exports/taskfiles/utils/cmake.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -15,16 +15,25 @@ tasks:
# @param {string} BUILD_DIR Directory containing the generated build system to use.
# @param {string[]} [EXTRA_ARGS] Any additional arguments to pass to the build command.
# @param {int} [JOBS] The maximum number of concurrent processes to use when building. If
# omitted, the native build tool's default number is used. See `man cmake`.
# omitted, defaults to the number of logical CPUs reported by the system. Falls back to 1 for a
# serial build if the CPU count cannot be determined.
# @param {string[]} [TARGETS] A list of specific targets to build instead of the default target.
build:
internal: true
label: "{{.TASK}}:{{.BUILD_DIR}}-{{.TARGETS}}-{{.EXTRA_ARGS}}"
vars:
EXTRA_ARGS:
ref: "default (list) .EXTRA_ARGS"
# Number of logical CPUs, used as the default for `JOBS` when the caller doesn't set it.
# Portable across Linux (`nproc`), POSIX (`getconf`), and macOS (`sysctl`).
_CPU_COUNT:
sh: |-
nproc 2>/dev/null \
|| getconf _NPROCESSORS_ONLN 2>/dev/null \
|| sysctl -n hw.logicalcpu 2>/dev/null \
|| echo 1
JOBS: >-
{{default "" .JOBS}}
{{default ._CPU_COUNT .JOBS}}
TARGETS:
ref: "default (list) .TARGETS"
requires:
Expand Down Expand Up @@ -154,7 +163,8 @@ tasks:
# @param {string[]} [CMAKE_INSTALL_ARGS] Any additional arguments to pass to the CMake install
# command.
# @param {int} [CMAKE_JOBS] The maximum number of concurrent processes to use when building. If
# omitted, the native build tool's default number is used. See `man cmake`.
# omitted, defaults to the number of logical CPUs reported by the system. Falls back to 1 for a
# serial build if the CPU count cannot be determined.
# @param {string} [CMAKE_SETTINGS_DIR] The directory where the project's CMake settings file
# should be stored.
# @param {string} [CMAKE_SOURCE_DIR=.] The path, within the extraction directory, containing the
Expand Down
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