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Different programs may share common code. For example, the payroll program and the accounts receivable program may both contain an identical sort subroutine. A shared module (a shared library is a form of shared module) gets loaded once and mapped into the two address spaces.
CMake supports building executables, libraries (e.g. libxyz, xyz.dll etc.), object file libraries and pseudo-targets (including aliases). CMake can produce object files that can be linked against by executable binaries/libraries, avoiding dynamic (run-time) linking and using static (compile-time) linking instead.
A program that is configured to use a library can use either static-linking or dynamic-linking.Historically, libraries could only be static. [4] For static-linking (), the library is effectively embedded into the programs executable file, while for dynamic-linking the library can be loaded at runtime from a shared location, such as system files.
CMake supports globbing, but recommends against it for the same reason. [13] Meson uses ccache automatically if installed. [14] It also detects changes to symbol tables of shared libraries to skip relinking executables against the library when there are no ABI changes. Precompiled headers are supported, but require configuration. [15]
In computing, a library is a collection of resources that is leveraged during software development to implement a computer program. Commonly, a library consists of executable code such as compiled functions and classes, or a library can be a collection of source code. A resource library may contain data such as images and text.
A linker or link editor is a computer program that combines intermediate software build files such as object and library files into a single executable file such a program or library. A linker is often part of a toolchain that includes a compiler and/or assembler that generates intermediate files that the linker processes.
Bazel is extensible with the Starlark programming language. [13] Starlark is an embedded language whose syntax is a subset of the Python syntax. However, it doesn't implement many of Python's language features, such as the ability to access the file I/O, in order to avoid extensions that could create side-effects or create build outputs not known to the build system itself.
Autoconf-like support for finding #include files, libraries, functions and typedefs Global view of dependencies, so multiple build passes or reordering targets is not required. Ability to share built files in a cache to speed up multiple builds - like ccache but for any type of target file, not just C/C++ compilation