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25 lines
1.2 KiB
Plaintext
25 lines
1.2 KiB
Plaintext
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This directory contains library description files. Each '<libname>.mk' file
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holds the instruction for building the library '<libname>'. These makefiles are
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never used directly but they are called from the build system when required.
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When called, the build system passes the following variables:
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:'BASE_DIR': This is the base directory of the source tree.
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Source codes are specified by setting the 'SRC_CC' and 'SRC_C' variables.
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The source code locations must be specified via 'vpath'.
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A library can include other libraries by setting the 'LIBS'
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variable.
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Each '<libname>.mk' file must include the 'lib.mk' role file:
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! include $(BASE_DIR)/mk/lib.mk
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Libraries implementing one and the same library interface may have specific
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implementations for different platforms. Such platform-specific '<libname>.mk'
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files should be placed into corresponding subdirectories. For example, the
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'linux'-specific implementation of the 'server' library resides in the 'linux/'
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subdirectory. The build system automatically searches the right '<libname>.mk'
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file by evaluating the 'SPECS' configuration variable. If 'SPECS' is set to
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'host linux', the build system will look into the directories './', './host',
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and './linux'.
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