A rule for building projects using the GNU Make build tool

make

make(name, additional_inputs, additional_tools, alwayslink, args, build_data, copts, data, defines,
     deps, env, includes, install_prefix, lib_name, lib_source, linkopts, out_bin_dir, out_binaries,
     out_data_dirs, out_dll_dir, out_headers_only, out_include_dir, out_interface_libs, out_lib_dir,
     out_shared_libs, out_static_libs, postfix_script, targets, tool_prefix, tools_deps)

Rule for building external libraries with GNU Make. GNU Make commands (make and make install by default) are invoked with PREFIX="install" (by default), and other environment variables for compilation and linking, taken from Bazel C/C++ toolchain and passed dependencies. Not all Makefiles will work equally well here, and some may require patching.Your Makefile must either support passing the install prefix using the PREFIX flag, or it needs to have a different way to pass install prefix to it. An equivalent of make install MUST be specified as one of the targets.This is because all the paths with param names prefixed by out_* are expressed as relative to INSTALLDIR, not the source directory.That is, if you execute only make, but not make install, this rule will not be able to pick up any build outputs. Finally, your make install rule must dereference symlinks to ensure that the installed files don't end up being symlinks to files in the sandbox. For example, installation lines like cp $SOURCE $DEST must become cp -L $SOURCE $DEST, as the -L will ensure that symlinks are dereferenced.

ATTRIBUTES

NameDescriptionTypeMandatoryDefault
nameA unique name for this target.Namerequired
additional_inputsdeprecated: Please use the build_data attribute.List of labelsoptional[]
additional_toolsdeprecated: Please use the build_data attribute.List of labelsoptional[]
alwayslinkOptional. if true, link all the object files from the static library, even if they are not used.BooleanoptionalFalse
argsA list of arguments to pass to the call to makeList of stringsoptional[]
build_dataFiles needed by this rule only during build/compile time. May list file or rule targets. Generally allows any target.List of labelsoptional[]
coptsOptional. Add these options to the compile flags passed to the foreign build system. The flags only take affect for compiling this target, not its dependencies.List of stringsoptional[]
dataFiles needed by this rule at runtime. May list file or rule targets. Generally allows any target.List of labelsoptional[]
definesOptional compilation definitions to be passed to the dependencies of this library. They are NOT passed to the compiler, you should duplicate them in the configuration options.List of stringsoptional[]
depsOptional dependencies to be copied into the directory structure. Typically those directly required for the external building of the library/binaries. (i.e. those that the external build system will be looking for and paths to which are provided by the calling rule)List of labelsoptional[]
envEnvironment variables to set during the build. $(execpath) macros may be used to point at files which are listed as data, deps, or build_data, but unlike with other rules, these will be replaced with absolute paths to those files, because the build does not run in the exec root. This attribute is subject to make variable substitution. No other macros are supported.Variables containing PATH (e.g. PATH, LD_LIBRARY_PATH, CPATH) entries will be prepended to the existing variable.Dictionary: String -> Stringoptional{}
includesOptional list of include dirs to be passed to the dependencies of this library. They are NOT passed to the compiler, you should duplicate them in the configuration options.List of stringsoptional[]
install_prefixInstall prefix, i.e. relative path to where to install the result of the build. Passed as an arg to "make" as PREFIX=<install_prefix>.Stringoptional"$$INSTALLDIR$$"
lib_nameLibrary name. Defines the name of the install directory and the name of the static library, if no output files parameters are defined (any of static_libraries, shared_libraries, interface_libraries, binaries_names) Optional. If not defined, defaults to the target's name.Stringoptional""
lib_sourceLabel with source code to build. Typically a filegroup for the source of remote repository. Mandatory.Labelrequired
linkoptsOptional link options to be passed up to the dependencies of this libraryList of stringsoptional[]
out_bin_dirOptional name of the output subdirectory with the binary files, defaults to 'bin'.Stringoptional"bin"
out_binariesOptional names of the resulting binaries.List of stringsoptional[]
out_data_dirsOptional names of additional directories created by the build that should be declared as bazel action outputsList of stringsoptional[]
out_dll_dirOptional name of the output subdirectory with the dll files, defaults to 'bin'.Stringoptional"bin"
out_headers_onlyFlag variable to indicate that the library produces only headersBooleanoptionalFalse
out_include_dirOptional name of the output subdirectory with the header files, defaults to 'include'.Stringoptional"include"
out_interface_libsOptional names of the resulting interface libraries.List of stringsoptional[]
out_lib_dirOptional name of the output subdirectory with the library files, defaults to 'lib'.Stringoptional"lib"
out_shared_libsOptional names of the resulting shared libraries.List of stringsoptional[]
out_static_libsOptional names of the resulting static libraries. Note that if out_headers_only, out_static_libs, out_shared_libs, and out_binaries are not set, default lib_name.a/lib_name.lib static library is assumedList of stringsoptional[]
postfix_scriptOptional part of the shell script to be added after the make commandsStringoptional""
targetsA list of targets within the foreign build system to produce. An empty string ("") will result in a call to the underlying build system with no explicit target set. However, in order to extract build outputs, you must execute at least an equivalent of make install, and have your make file copy the build outputs into the directory specified by install_prefix.List of stringsoptional["", "install"]
tool_prefixA prefix for build commandsStringoptional""
tools_depsdeprecated: Please use the build_data attribute.List of labelsoptional[]

make_variant

make_variant(name, toolchain, kwargs)

Wrapper macro around the make() rule to force usage of the given make variant toolchain.

PARAMETERS

NameDescriptionDefault Value
nameThe target namenone
toolchainThe desired make variant toolchain to use, e.g. @rules_foreign_cc//toolchains:preinstalled_nmake_toolchainnone
kwargsRemaining keyword argumentsnone