Examples

[tool.just-buildit]
command = "make"

TARGET := $(JUST_BUILDIT_OUTPUT_DIR)/$(JUST_BUILDIT_NAME)$(JUST_BUILDIT_EXT_SUFFIX)

all: $(TARGET)

$(TARGET):
    $(CC) $(JUST_BUILDIT_LDFLAGS) \
        -I$(JUST_BUILDIT_INCLUDE_DIR) \
        src/mylib/mylib.c \
        -o $(TARGET) \
        $(JUST_BUILDIT_LIBS)

[tool.just-buildit]
command = "make pyext"

pyext:
    cmake -B _build -DPython3_EXECUTABLE=$(JUST_BUILDIT_PYTHON)
    cmake --build _build --target mylib
    find _build -maxdepth 3 -name "$(JUST_BUILDIT_NAME)$(JUST_BUILDIT_EXT_SUFFIX)" \
        -exec cp {} $(JUST_BUILDIT_OUTPUT_DIR)/ \;

.PHONY: pyext

# CMakeLists.txt
cmake_minimum_required(VERSION 3.15)
project(mylib C)
find_package(Python3 COMPONENTS Development.Module REQUIRED)
Python3_add_library(mylib MODULE src/mylib.c)
set_target_properties(mylib PROPERTIES
    OUTPUT_NAME "$ENV{JUST_BUILDIT_NAME}"
    SUFFIX      "$ENV{JUST_BUILDIT_EXT_SUFFIX}"
    PREFIX      "")

[tool.just-buildit]
command = "make pyext"

pyext:
    meson setup _build --reconfigure -Dbuildtype=release
    meson compile -C _build
    find _build -name "*$(JUST_BUILDIT_EXT_SUFFIX)" \
        -exec cp {} $(JUST_BUILDIT_OUTPUT_DIR)/ \;

# meson.build
project('mylib', 'c')
py = import('python').find_installation()
py.extension_module('mylib', 'src/mylib.c', install: false)

src/mylib/
    __init__.py      # pure Python
    utils.py         # pure Python
    _core.c          # C extension

[tool.just-buildit]
command = "make"

EXT := $(JUST_BUILDIT_OUTPUT_DIR)/mylib/_core$(JUST_BUILDIT_EXT_SUFFIX)

all: $(EXT)
    cp src/mylib/*.py $(JUST_BUILDIT_OUTPUT_DIR)/mylib/

$(EXT):
    mkdir -p $(JUST_BUILDIT_OUTPUT_DIR)/mylib
    $(CC) $(JUST_BUILDIT_LDFLAGS) \
        -I$(JUST_BUILDIT_INCLUDE_DIR) \
        src/mylib/_core.c \
        -o $(EXT) \
        $(JUST_BUILDIT_LIBS)