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racket/.makefile
Matthew Flatt 5c45588573 cs: provide hint to GC about places 
The collector tries to use roughly the same amount of parallelism as
the number of active threads, but make sure that it doesn't fall back
to an ownership-mangling non-parallel collection if all but one place
happens to be stalled.
2020-10-12 19:24:24 -06:00

1134 lines
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Makefile
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# This makefile is meant to be converted to "Makefile" by
# "racket/src/makemake.rkt". See the end of this file for information
# on the `make` dialect that it uses.
#
# The targets here do not use dependencies (mostly), so it's a strange
# use of `make'. Really, this makefile is an alternative to a pile of
# scripts, where each target plays the role of a script. It's written
# as a makefile, because then the intersection of `make` and `nmake`
# acts as a kind of always-available scripting language.
#
# The main targets are
#
# in-place = build in "racket" with all packages in development mode
#
# as-is = like `in-place`, but don't download anything new
#
# base = build in "collects" only (i.e., first step of `in-place`)
#
# [`cs-` or `bc-` can prefix any of the above to select a Racket CS
# or Racket BC build.]
#
# server = build base, build packages listed in $(PKGS) or specified
# via $(CONFIG), start server at port $(SERVER_PORT)
#
# client = build base, create an installer with $(PKGS) with the help
# of $(SERVER); result is recorded in "bundle/installer.txt"
#
# installers = `server' plus `client' via $(CONFIG)
#
# Various configiration options can be provided as arguments to
# `make`. For example, `PKGS` can be supplied with `make PKGS="..."`.
# Not all variables in the makefile are intended as arguments,
# though.
# Packages (separated by spaces) to link in development mode or
# to include in a distribution:
PKGS = main-distribution main-distribution-test
main:
$(MAKE) in-place
win:
$(MAKE) win-in-place
# ------------------------------------------------------------
# In-place build
PLAIN_RACKET = racket/bin/racket
WIN32_PLAIN_RACKET = racket\racket
# For -M, etc., to pick the target machine for compilation:
SETUP_MACHINE_FLAGS =
# In case of cross-installation, point explicitly to local content:
RUN_RACKET == $(PLAIN_RACKET) $(SETUP_MACHINE_FLAGS) -G racket/etc -X racket/collects
RUN_RACO == $(RUN_RACKET) -N raco -l- raco
DEFAULT_SRC_CATALOG = https://pkgs.racket-lang.org
# Options passed along to any `raco pkg update` run:
PKG_UPDATE_OPTIONS =
# Options passed along to any `raco setup` run:
PLT_SETUP_OPTIONS =
# Makefile parallelism propoagated to `raco setup`:
CPUS =
# Target selector: `cs` or `bc`
VM = cs
# Target selector: `minimal` or `skip`
INITIAL_SETUP_MODE = minimal
# Target selector: `` or `-as-is`
AS_IS=
in-place:
if [ "$(CPUS)" = "" ] ; \
then $(MAKE) plain-in-place ; \
else $(MAKE) -j $(CPUS) plain-in-place JOB_OPTIONS="-j $(CPUS)" ; fi
# The `$(VM)-minimal-in-place` target should make `$(VM)-base` and then set
# `PLAIN_RACKET` while bouncing to `plain-minimal-in-place-after-base`.
# Similarly, `$(VM)-in-place-setup` should set `PLAIN_RACKET` and bounce
# to `plain-in-place-setup`.
plain-in-place:
$(MAKE) base-config
$(MAKE) $(VM)-$(INITIAL_SETUP_MODE)-in-place
$(MAKE) $(VM)-in-place-setup
win-in-place:
$(MAKE) win-base-config
$(MAKE) win-$(VM)-$(INITIAL_SETUP_MODE)-in-place
$(MAKE) win-$(VM)-in-place-setup
# Update before install to avoid needless work on the initial build,
# and use `--no-setup` plus an explicit `raco setup` for the same reason.
ALL_PKG_UPDATE_OPTIONS == --all --auto --no-setup --scope installation \
$(PKG_UPDATE_OPTIONS)
ALL_PKG_INSTALL_OPTIONS == $(JOB_OPTIONS) --no-setup --pkgs --skip-installed \
--scope installation --deps search-auto \
$(REQUIRED_PKGS) $(PKGS)
ALL_PLT_SETUP_OPTIONS == $(JOB_OPTIONS) $(PLT_SETUP_OPTIONS)
# Allow `--error-out`, etc., for final setup step, so `make both` can
# continue from errors at that level
IN_PLACE_SETUP_OPTIONS =
plain-minimal-in-place-after-base:
$(MAKE) pkgs-catalog
$(RUN_RACO) pkg update $(ALL_PKG_UPDATE_OPTIONS)
$(RUN_RACO) pkg install $(ALL_PKG_INSTALL_OPTIONS)
$(RUN_RACO) setup --only-foreign-libs $(ALL_PLT_SETUP_OPTIONS)
plain-in-place-setup:
$(RUN_RACO) setup $(ALL_PLT_SETUP_OPTIONS) $(IN_PLACE_SETUP_OPTIONS)
# Rebuild without consulting catalogs or package sources:
as-is:
if [ "$(CPUS)" = "" ] ; \
then $(MAKE) plain-as-is AS_IS="-as-is" ; \
else $(MAKE) -j $(CPUS) plain-as-is JOB_OPTIONS="-j $(CPUS)" AS_IS="-as-is" ; fi
plain-as-is:
$(MAKE) plain-base
$(MAKE) $(VM)-in-place-setup
win-as-is:
$(MAKE) win-base
$(MAKE) win-$(VM)-in-place-setup
# ------------------------------------------------------------
# Unix-style build (Unix and Mac OS, only)
PREFIX =
CONFIG_PREFIX_ARGS == --prefix=$(PREFIX) --enable-macprefix
UNIXSTYLE_CONFIG_qq == MORE_CONFIGURE_ARGS="$(MORE_CONFIGURE_ARGS) $(CONFIG_PREFIX_ARGS)" CONFIG_IN_PLACE_ARGS=""
UNIX_CATALOG == build/local/catalog
UNIX_RACO_ARGS == $(JOB_OPTIONS) --catalog $(UNIX_CATALOG) --auto -i
UNIX_BASE_ARGS == SELF_ROOT_CONFIG_FLAG="-Z" SKIP_DESTDIR_FIX="skip"
unix-style:
if [ "$(CPUS)" = "" ] ; \
then $(MAKE) plain-unix-style ; \
else $(MAKE) -j $(CPUS) plain-unix-style JOB_OPTIONS="-j $(CPUS)" ; fi
plain-unix-style:
if [ "$(PREFIX)" = "" ] ; then $(MAKE) error-need-prefix ; fi
$(MAKE) $(VM)-base $(UNIXSTYLE_CONFIG_qq) $(UNIX_BASE_ARGS)
$(MAKE) set-src-catalog
$(MAKE) local-catalog
"$(DESTDIR)$(PREFIX)/bin/raco" pkg install $(UNIX_RACO_ARGS) $(REQUIRED_PKGS) $(PKGS)
cd racket/src/build && $(MAKE) fix-paths
error-need-prefix:
: ================================================================
: Please supply PREFIX="<dest-dir>" to set the install destination
: ================================================================
exit 1
LOC_CATALOG == build/local/pkgs-catalog
local-catalog:
"$(DESTDIR)$(PREFIX)/bin/racket" -l- pkg/dirs-catalog --check-metadata $(LOC_CATALOG) pkgs
"$(DESTDIR)$(PREFIX)/bin/raco" pkg catalog-copy --force --from-config $(LOC_CATALOG) $(UNIX_CATALOG)
set-src-catalog:
if [ ! "$(SRC_CATALOG)" = "$(DEFAULT_SRC_CATALOG)" ] ; \
then "$(DESTDIR)$(PREFIX)/bin/raco" pkg config -i --set catalogs "$(SRC_CATALOG)" ""; fi
# ------------------------------------------------------------
# Base build
# During this step, we use a configuration file that indicates
# an empty set of link files, so that any installation-wide
# links or packages are ignored during the base build.
# Although `CONFIGURE_ARGS_qq` is intended as a configuration argument that should
# be propagated, we can't handle it's quoting in general, so it only really works
# for GNU Make:
CONFIGURE_ARGS_qq :=
# A variant of `CONFIGURE_ARGS` that propagates, but does not support quotes:
CONFIGURE_ARGS =
# Rules in this makefile add configuration arguments here:
MORE_CONFIGURE_ARGS =
# Arrange for `raco setup` to run at first without packages by
# pointing to a configuration in "build/etc"; the `-G` flag can be
# changed to `-Z` (by certain rules) to disable this redirection:
SELF_ROOT_CONFIG_FLAG = -G
SELF_FLAGS_qq == SELF_ROOT_CONFIG_FLAG="$(SELF_ROOT_CONFIG_FLAG)"
PLT_SETUP_OPTIONS_qq == PLT_SETUP_OPTIONS="$(JOB_OPTIONS) $(PLT_SETUP_OPTIONS)"
INSTALL_SETUP_ARGS == $(SELF_FLAGS_qq) $(PLT_SETUP_OPTIONS_qq) SETUP_MACHINE_FLAGS="$(SETUP_MACHINE_FLAGS)"
WIN32_BUILD_LEVEL = all
base:
if [ "$(CPUS)" = "" ] ; \
then $(MAKE) plain-base ; \
else $(MAKE) -j $(CPUS) plain-base JOB_OPTIONS="-j $(CPUS)" ; fi
plain-base:
$(MAKE) base-config
$(MAKE) $(VM)-base
win-base:
$(MAKE) win-base-config
$(MAKE) win-$(VM)-base
base-config:
mkdir -p build/config
echo '#hash((links-search-files . ()))' > build/config/config.rktd
win-base-config:
IF NOT EXIST build\config cmd /c mkdir build\config
cmd /c echo #hash((links-search-files . ())) > build\config\config.rktd
# ------------------------------------------------------------
# Racket BC
# Can be `bc` or empty:
RACKETBC_SUFFIX = bc
bc:
$(MAKE) bc-in-place
win-bc:
$(MAKE) win-bc-in-place
bc-in-place:
$(MAKE) in-place VM=bc
win-bc-in-place:
$(MAKE) win-in-place VM=bc
bc-as-is:
$(MAKE) as-is VM=bc
win-bc-as-is:
$(MAKE) win-as-is VM=bc
bc-unix-style:
$(MAKE) unix-style VM=bc
bc-minimal-in-place:
$(MAKE) bc-base
$(MAKE) plain-minimal-in-place-after-base PLAIN_RACKET=racket/bin/racket$(RACKETBC_SUFFIX)
win-bc-minimal-in-place:
$(MAKE) win-bc-base
$(MAKE) plain-minimal-in-place-after-base PLAIN_RACKET=racket\racket$(RACKETBC_SUFFIX)
bc-skip-in-place:
$(MAKE) bc-base
win-bc-skip-in-place:
$(MAKE) win-bc-base
bc-in-place-setup:
$(MAKE) plain-in-place-setup PLAIN_RACKET=racket/bin/racket$(RACKETBC_SUFFIX)
win-bc-in-place-setup:
$(MAKE) plain-in-place-setup PLAIN_RACKET=racket\racket$(RACKETBC_SUFFIX)
bc-base:
if [ "$(RACKETBC_SUFFIX)" = "" ] ; \
then $(MAKE) bc-configure MORE_CONFIGURE_ARGS="$(MORE_CONFIGURE_ARGS) --enable-bcdefault" ; \
else $(MAKE) bc-configure MORE_CONFIGURE_ARGS="$(MORE_CONFIGURE_ARGS) --disable-bcdefault" ; fi
cd racket/src/build/bc && $(MAKE) $(SELF_FLAGS_qq)
cd racket/src/build && $(MAKE) install-bc $(INSTALL_SETUP_ARGS)
win-bc-base:
$(MAKE) win-remove-setup-dlls
cmd /c racket\src\worksp\build-at racket\src\worksp ..\..\..\build\config $(WIN32_BUILD_LEVEL) _$(RACKETBC_SUFFIX) $(JOB_OPTIONS) $(PLT_SETUP_OPTIONS)
# Start by removing DLLs that may be loaded by `raco setup`
win-remove-setup-dlls:
IF EXIST racket\lib\longdouble.dll cmd /c del racket\lib\longdouble.dll
IF EXIST racket\lib\libiconv-2.dll cmd /c del racket\lib\libiconv-2.dll
IF EXIST racket\lib\iconv.dll cmd /c del racket\lib\iconv.dll
IF EXIST racket\lib\libeay32.dll cmd /c del racket\lib\libeay32.dll
IF EXIST racket\lib\ssleay32.dll cmd /c del racket\lib\ssleay32.dll
CONFIG_IN_PLACE_ARGS = --disable-useprefix --enable-origtree
BC_CONFIGURE_ARGS == $(CONFIGURE_ARGS) $(MORE_CONFIGURE_ARGS) $(CONFIG_IN_PLACE_ARGS)
bc-configure:
$(MAKE) racket/src/build/bc/Makefile
cd racket/src/build/bc && $(MAKE) reconfigure MORE_CONFIGURE_ARGS="$(BC_CONFIGURE_ARGS)"
racket/src/build/bc/Makefile: racket/src/bc/configure racket/src/bc/Makefile.in racket/src/cfg-bc racket/src/Makefile.in
mkdir -p racket/src/build/bc
cd racket/src/build/bc && ../../bc/configure $(CONFIGURE_ARGS_qq) $(BC_CONFIGURE_ARGS)
cd racket/src/build && ../cfg-bc $(CONFIGURE_ARGS_qq) $(CS_CONFIGURE_ARGS)
MORE_CROSS_CONFIGURE_ARGS =
# For cross-compilation, build a native executable with no configure options:
native-bc-for-cross:
mkdir -p racket/src/build/cross/bc
$(MAKE) racket/src/build/cross/bc/Makefile
cd racket/src/build/cross/bc && $(MAKE) reconfigure MORE_CONFIGURE_ARGS="--enable-bcdefault $(MORE_CROSS_CONFIGURE_ARGS)"
cd racket/src/build/cross/bc && $(MAKE)
racket/src/build/cross/bc/Makefile: racket/src/bc/configure racket/src/cfg-bc racket/src/bc/Makefile.in
cd racket/src/build/cross/bc && ../../../bc/configure --enable-bcdefault $(MORE_CROSS_CONFIGURE_ARGS)
# Temporary compatibility for distro-build:
native-for-cross:
$(MAKE) native-bc-for-cross
# ------------------------------------------------------------
# Racket CS
# Can be `cs` or empty:
RACKETCS_SUFFIX =
# If `RACKET` and `RACKET_FOR_BOOTFILES` are not set, the build uses the
# `pb` repo to get initial portable-byte Chez Scheme boot files.
# If `RACKET` is set, then it is always run in preference to the
# built Racket, so it's useful for cross-compilation, and it needs
# to be essentially the same version and variant as being built.
# If only `RACKET_FOR_BOOTFILES` is set, then it doesn't have to be so
# similar to the one being built, because it's used only to create
# initial Chez Scheme boot files.
RACKET :=
RACKET_FOR_BOOTFILES = $(RACKET)
# Propoagate `RACKET_FOR_BUILD` instead of `RACKET` to avoid conflicting
# with makefiles in subdirectories:
RACKET_FOR_BUILD = $(RACKET)
# This branch name changes each time the pb boot files are updated:
PB_BRANCH == circa-7.9.0.2-3
PB_REPO = https://github.com/racket/pb
# Alternative source for Chez Scheme boot files, normally set by
# the distro-build client driver
EXTRA_REPOS_BASE =
# Target selector: `-cross` or ``
CS_CROSS_SUFFIX =
# Points a cross build at a directory containing a host build; this path
# can be relative to the cross build directory, but it needs to end in
# a separator if non-empty
CS_HOST_WORKAREA_PREFIX =
cs:
$(MAKE) cs-in-place
win-cs:
$(MAKE) win-cs-in-place
cs-in-place:
$(MAKE) in-place VM=cs
win-cs-in-place:
$(MAKE) win-in-place VM=cs
cs-as-is:
$(MAKE) as-is VM=cs
win-cs-as-is:
$(MAKE) win-as-is VM=cs
cs-unix-style:
$(MAKE) unix-style VM=cs
cs-minimal-in-place:
$(MAKE) cs-base
$(MAKE) cs-minimal-in-place-after-base$(CS_CROSS_SUFFIX)
win-cs-minimal-in-place:
$(MAKE) win-cs-base
$(MAKE) plain-minimal-in-place-after-base PLAIN_RACKET=racket\racket$(RACKETCS_SUFFIX)
cs-skip-in-place:
$(MAKE) cs-base
win-cs-skip-in-place:
$(MAKE) win-cs-base
cs-in-place-setup:
$(MAKE) plain-in-place-setup PLAIN_RACKET=racket/bin/racket$(RACKETCS_SUFFIX)
win-cs-in-place-setup:
$(MAKE) plain-in-place-setup PLAIN_RACKET=racket\racket$(RACKETCS_SUFFIX)
cs-base:
$(MAKE) maybe-fetch-pb$(AS_IS)
if [ "$(RACKETCS_SUFFIX)" = "" ] ; \
then $(MAKE) cs-configure MORE_CONFIGURE_ARGS="$(MORE_CONFIGURE_ARGS) --enable-csdefault" ; \
else $(MAKE) cs-configure MORE_CONFIGURE_ARGS="$(MORE_CONFIGURE_ARGS) --disable-csdefault" ; fi
cd racket/src/build/cs/c && $(MAKE) CS_HOST_WORKAREA_PREFIX="$(CS_HOST_WORKAREA_PREFIX)"
$(MAKE) base-config
cd racket/src/build && $(MAKE) install-cs $(INSTALL_SETUP_ARGS)
CS_CONFIGURE_ARGS == $(CONFIGURE_ARGS) $(MORE_CONFIGURE_ARGS) $(CONFIG_IN_PLACE_ARGS)
cs-configure:
$(MAKE) racket/src/build/cs/c/Makefile
cd racket/src/build/cs/c && $(MAKE) reconfigure MORE_CONFIGURE_ARGS="$(CS_CONFIGURE_ARGS)"
racket/src/build/cs/c/Makefile: racket/src/cs/c/configure racket/src/cs/c/Makefile.in racket/src/cfg-cs racket/src/Makefile.in
mkdir -p racket/src/build/cs/c
cd racket/src/build/cs/c && ../../../cs/c/configure $(CONFIGURE_ARGS_qq) $(CS_CONFIGURE_ARGS)
cd racket/src/build && ../cfg-cs $(CONFIGURE_ARGS_qq) $(CS_CONFIGURE_ARGS)
cs-minimal-in-place-after-base:
$(MAKE) plain-minimal-in-place-after-base PLAIN_RACKET=racket/bin/racket$(RACKETCS_SUFFIX)
cs-minimal-in-place-after-base-cross:
$(MAKE) plain-minimal-in-place-after-base PLAIN_RACKET="$(RACKET_FOR_BUILD)" PLT_SETUP_OPTIONS="--no-pkg-deps $(PLT_SETUP_OPTIONS)"
fetch-pb:
if [ "$(EXTRA_REPOS_BASE)" = "" ] ; \
then $(MAKE) fetch-pb-from ; \
else $(MAKE) fetch-pb-from PB_REPO="$(EXTRA_REPOS_BASE)pb/.git" ; fi
maybe-fetch-pb:
if [ "$(RACKET_FOR_BOOTFILES)" = "" ] ; \
then $(MAKE) fetch-pb ; fi
maybe-fetch-pb-as-is:
echo done
PB_DIR == racket/src/ChezScheme/boot/pb
fetch-pb-from:
mkdir -p racket/src/ChezScheme/boot
if [ ! -d racket/src/ChezScheme/boot/pb ] ; \
then git clone -q -b $(PB_BRANCH) $(PB_REPO) $(PB_DIR) ; \
else cd $(PB_DIR) && git fetch -q origin $(PB_BRANCH):remotes/origin/$(PB_BRANCH) ; fi
cd $(PB_DIR) && git checkout -q $(PB_BRANCH)
# Helpers for managing the "pb" repo:
# * `make pb-stage` after updating `PB_BRANCH`
# * `make pb-push` to upload the branch after checking that
# the staged branch looks right
# If you don't have push access to `PB_REPO`, you may need to
# change the origin of your "pb" checkout.
pb-stage:
cd $(PB_DIR) && git branch $(PB_BRANCH)
cd $(PB_DIR) && git checkout $(PB_BRANCH)
cd $(PB_DIR) && git add . && git commit --amend -m "new build"
pb-push:
cd $(PB_DIR) && git push -u origin $(PB_BRANCH)
WIN32_BOOT_ARGS == SETUP_BOOT_MODE=--boot WIN32_BUILD_LEVEL=bc PLAIN_RACKET=racket\racketbc
win-cs-base:
IF "$(RACKET_FOR_BUILD)" == "" $(MAKE) win-bc-then-cs-base $(WIN32_BOOT_ARGS)
IF not "$(RACKET_FOR_BUILD)" == "" $(MAKE) win-just-cs-base SETUP_BOOT_MODE=--chain
WIN32_SETUP_BOOT == -O "info@compiler/cm" \
-l- setup $(SETUP_BOOT_MODE) racket/src/setup-go.rkt racket/src/build/compiled \
ignored racket/src/build/ignored.d
win-bc-then-cs-base:
$(MAKE) win-bc-base
$(MAKE) win-just-cs-base RACKET_FOR_BUILD="$(PLAIN_RACKET)"
CSBUILD_ARGUMENTS == --pull \
--racketcs-suffix "$(RACKETCS_SUFFIX)" $(DISABLE_STATIC_LIBS) \
--boot-mode "$(SETUP_BOOT_MODE)" \
--extra-repos-base "$(EXTRA_REPOS_BASE)"
win-just-cs-base:
IF NOT EXIST racket\src\build cmd /c mkdir racket\src\build
cmd /c $(RACKET_FOR_BUILD) $(WIN32_SETUP_BOOT) racket\src\worksp\csbuild.rkt $(CSBUILD_ARGUMENTS)
IF NOT EXIST build\config cmd /c mkdir build\config
cmd /c echo #hash((links-search-files . ())) > build\config\config.rktd
racket\racket$(RACKETCS_SUFFIX) -G build\config -N raco -l- raco setup $(JOB_OPTIONS) $(PLT_SETUP_OPTIONS)
# For cross-compilation, build a native executable with no configure options:
native-cs-for-cross:
$(MAKE) maybe-fetch-pb
mkdir -p racket/src/build/cross/cs/c
$(MAKE) racket/src/build/cross/cs/c/Makefile
cd racket/src/build/cross/cs/c && $(MAKE) reconfigure MORE_CONFIGURE_ARGS="--enable-csdefault $(MORE_CROSS_CONFIGURE_ARGS)"
cd racket/src/build/cross/cs/c && $(MAKE)
racket/src/build/cross/cs/c/Makefile: racket/src/cs/c/configure racket/src/cs/c/Makefile.in
cd racket/src/build/cross/cs/c; ../../../../cs/c/configure --enable-csdefault $(MORE_CROSS_CONFIGURE_ARGS)
# ------------------------------------------------------------
# Both traditional Racket and RacketCS
# ... but update packages and builds docs only once
both:
$(MAKE) cs IN_PLACE_SETUP_OPTIONS="--error-out build/step"
$(MAKE) also-bc IN_PLACE_SETUP_OPTIONS="--error-in build/step"
plain-also:
$(MAKE) $(VM) INITIAL_SETUP_MODE=skip PLT_SETUP_OPTIONS="-D $(PLT_SETUP_OPTIONS)"
also-cs:
$(MAKE) plain-also VM=cs
also-bc:
$(MAKE) plain-also VM=bc
win-both:
$(MAKE) win-cs
$(MAKE) win-also-bc
win-plain-also:
$(MAKE) $(VM) INITIAL_SETUP_MODE=skip PLT_SETUP_OPTIONS="-D $(PLT_SETUP_OPTIONS)"
win-also-cs:
$(MAKE) win-plain-also VM=cs
win-also-bc:
$(MAKE) win-plain-also VM=bc
# ------------------------------------------------------------
# Clean (which just gives advice)
clean:
@echo "No makefile support for cleaning. Instead, try"
@echo " git clean -d -x -f ."
@exit 1
# ------------------------------------------------------------
# Configuration options for building installers
# On variable definitions: Spaces are allowed where noted and
# disallowed otherwise. If a variable name ends in "_q", then it means
# that the variable can expand to include double-quote marks. If a
# variable's name ends in "_qq", then it expands to a combination of
# single-quote and double-quote marks. If a variable's name does not
# end in "_q" or "_qq", don't use any quote marks on the right-hand
# side of its definition.
# Catalog for package sources:
SRC_CATALOG = $(DEFAULT_SRC_CATALOG)
# A URL embedded in documentation for remote searches, where a Racket
# version and search key are added as query fields to the URL, and ""
# is replaced by default:
DOC_SEARCH =
# Server for built packages (i.e., the host where you'll run the
# server):
SERVER = localhost
SERVER_PORT = 9440
SERVER_URL_SCHEME = http
# Paths on the server to reach catalog content and "collects.tgz",
# if not the root:
SERVER_CATALOG_PATH =
SERVER_COLLECTS_PATH =
# Set `SERVER_HOSTS` to a comma-delimited set of server addresses
# that determine the interfaces on which the server listens; the
# default, "localhost", listens only on the loopback device, while
# anf empty value listens on all interfaces:
SERVER_HOSTS = localhost
# Set to "--release" to create release-mode installers (as opposed to
# snapshot installers):
RELEASE_MODE =
# Set to "--source" to create an archive (instead of an "installer"
# proper) on a client that has the run-time system in source form:
SOURCE_MODE =
# Set to "--versionless" to avoid a version number in an installer's
# name or installation path:
VERSIONLESS_MODE =
# Set to "--mac-pkg" to create ".pkg"-based installers for Mac OS,
# instead of a ".dmg" for drag-and-drop installation:
MAC_PKG_MODE =
# Set to "--tgz" to create a ".tgz" archive instead of an installer:
TGZ_MODE =
# Comma-separated options for the `--packed-options` argument to
# `distro-build/installer`, which generalizes simple switches like
# `--mac-pkg` and `--tgz`; we don't just take a sequence of regular
# command-line switches here, because it's difficult to thread those
# through `make` variants like `nmake`:
INSTALLER_OPTIONS =
# Set to "--source --no-setup" to include packages in an installer
# (or archive) only in source form:
PKG_SOURCE_MODE =
# Set to "--disable-lib" to avoid including ".a" and ".boot" files
# for use in embedding Racket in other applications
DISABLE_STATIC_LIBS =
# Set to a base64-encoded list of strings for an executable and
# arguments to run on an assembled directory (on the client machine)
# before it is packaged into an installer, or empty for no pre-process
# action:
INSTALLER_PRE_PROCESS_BASE64 =
# Set to a base64-encoded list of strings for an executable and
# arguments to run on an installer (on the client machine) before the
# installer is uploaded, or empty for no post-process action:
INSTALLER_POST_PROCESS_BASE64 =
# Human-readable name (spaces allowed), installation name base, and
# Unix installation directory name for the generated installers:
DIST_NAME = Racket
DIST_BASE = racket
DIST_DIR = racket
# An extra suffix for the installer name, usually used to specify
# a variant of an OS:
DIST_SUFFIX =
# A human-readable description (spaces allowed) of the generated
# installer, usually describing a platform, used for upload:
DIST_DESC =
# Package catalog URLs (individually quoted as needed, separated by
# spaces) to install as the initial configuration in generated
# installers, where "" is replaced by the default configuration:
DIST_CATALOGS_q = ""
# An identifier for this build; if not specified, a build identifier
# is inferred from the date and git repository
BUILD_STAMP =
# "Name" of the installation used for `user' package scope by default
# in an installation from an installer, where an empty value leaves
# the default as the version number:
INSTALL_NAME =
# For Mac OS, a signing identity (spaces allowed) for binaries in an
# installer:
SIGN_IDENTITY =
# For Windows, `osslsigncode' arguments other than `-n', `-t', `-in',
# and `-out' as a Base64-encoded, S-expression, list of strings:
OSSLSIGNCODE_ARGS_BASE64 =
# URL for a README file to include in an installer (empty for none,
# spaces allowed):
README = $(SERVER_URL_SCHEME)://$(SVR_PRT)/README.txt
# URL destination to upload an installer file after it is created
# (empty for no upload, spaces allowed); the file name is added to the
# end of the URL, and DIST_DESC is passed as a "Description:" header:
UPLOAD =
# Configuration module that describes a build, normally implemented
# with `#lang distro-build/config':
CONFIG = build/site.rkt
# A mode that is made available to the site-configuration module
# through the `current-mode' parameter:
CONFIG_MODE = default
# Set to "--clean" to flush client directories in a build farm
# (except as overridden in the `CONFIG' module):
CLEAN_MODE =
# Determines the number of parallel jobs used for package and
# setup operations:
JOB_OPTIONS =
# $(USER_RACKET) arguments for a command to run after the server has
# started; normally set by the `installers' target:
SERVE_DURING_CMD_qq :=
# ------------------------------------------------------------
# Helpers
# Needed for any distribution:
REQUIRED_PKGS := racket-lib
# Packages needed for building distribution:
DISTRO_BUILD_PKGS := distro-build-lib
SVR_PRT = $(SERVER):$(SERVER_PORT)
SVR_CAT = $(SERVER_URL_SCHEME)://$(SVR_PRT)/$(SERVER_CATALOG_PATH)
# To configure package installations on the server:
SERVER_PKG_INSTALL_OPTIONS =
# To configure package installations for the installer:
PKG_INSTALL_OPTIONS =
# Catch problems due to malformed distribution-build packages
RECOMPILE_OPTIONS == --recompile-only
# Helper macros:
USER_CONFIG == -G build/user/config -X racket/collects -A build/user $(SETUP_MACHINE_FLAGS)
USER_RACKET == $(PLAIN_RACKET) $(USER_CONFIG)
USER_RACO == $(PLAIN_RACKET) $(USER_CONFIG) -N raco -l- raco
WIN32_RACKET == $(WIN32_PLAIN_RACKET) $(USER_CONFIG)
WIN32_RACO == $(WIN32_PLAIN_RACKET) $(USER_CONFIG) -N raco -l- raco
X_AUTO_OPTIONS == --skip-installed --deps search-auto --pkgs $(JOB_OPTIONS)
USER_AUTO_OPTIONS == --scope user $(X_AUTO_OPTIONS)
SOURCE_USER_AUTO_q == --catalog build/catalog-copy $(USER_AUTO_OPTIONS) $(SERVER_PKG_INSTALL_OPTIONS)
REMOTE_USER_AUTO == --catalog $(SVR_CAT) $(USER_AUTO_OPTIONS)
REMOTE_INST_AUTO == --catalog $(SVR_CAT) --scope installation $(X_AUTO_OPTIONS) $(PKG_INSTALL_OPTIONS) $(RECOMPILE_OPTIONS)
CONFIG_MODE_q == "$(CONFIG)" "$(CONFIG_MODE)"
BUNDLE_CONFIG == bundle/racket/etc/config.rktd
BUNDLE_RACO_FLAGS == -G bundle/racket/etc -X bundle/racket/collects -C -A bundle/user -l raco
BUNDLE_RACO == $(PLAIN_RACKET) $(BUNDLE_RACO_FLAGS)
WIN32_BUNDLE_RACO == $(WIN32_PLAIN_RACKET) $(BUNDLE_RACO_FLAGS)
IN_BUNDLE_RACO = bundle/racket/bin/raco
WIN32_IN_BUNDLE_RACO == bundle\racket\raco
# ------------------------------------------------------------
# Linking all packages (development mode; not an installer build)
PKGS_CATALOG == -U -G build/config -l- pkg/dirs-catalog --link --check-metadata --immediate
PKGS_CONFIG == -U -G build/config racket/src/pkgs-config.rkt
pkgs-catalog:
$(RUN_RACKET) $(PKGS_CATALOG) racket/share/pkgs-catalog pkgs racket/src/expander
$(RUN_RACKET) $(PKGS_CONFIG) "$(DEFAULT_SRC_CATALOG)" "$(SRC_CATALOG)"
$(RUN_RACKET) racket/src/pkgs-check.rkt racket/share/pkgs-catalog
# ------------------------------------------------------------
# Handle `SERVER_COMPILE_MACHINE` for various targets
SERVER_COMPILE_MACHINE = -M
ANY_COMPILE_MACHINE_ARGS_qq == SETUP_MACHINE_FLAGS="-MCR `pwd`/build/zo:" \
MORE_CONFIGURE_ARGS="$(MORE_CONFIGURE_ARGS) --enable-crossany"
# Target selector: `plain-server`, `plain-client-from-site`, `plain-installers-from-built`, \
# `plain-site-from-installers`, or `plain-snapshot-at-site`
NEXT_TARGET =
with-setup-flags:
if [ "$(SERVER_COMPILE_MACHINE)" = "-M" ] ; \
then $(MAKE) $(NEXT_TARGET) $(ANY_COMPILE_MACHINE_ARGS_qq) ; \
else $(MAKE) $(NEXT_TARGET) ; fi
random:
echo $(MORE_CONFIGURE_ARGS)
# ------------------------------------------------------------
# On a server platform (for an installer build):
# These targets require GNU `make', so that we don't have to propagate
# variables through all of the target layers.
server:
$(MAKE) with-setup-flags NEXT_TARGET=plain-server
plain-server:
rm -rf build/zo
$(MAKE) plain-base
$(MAKE) server-from-base
server-from-base:
$(MAKE) build/site.rkt
$(MAKE) stamp
$(MAKE) build-from-catalog
$(MAKE) origin-collects
$(MAKE) built-catalog
$(MAKE) built-catalog-server
build/site.rkt:
mkdir -p build
echo "#lang distro-build/config" > build/site.rkt
echo "(machine)" >> build/site.rkt
stamp:
if [ "$(BUILD_STAMP)" = '' ] ; \
then $(MAKE) stamp-as-inferred ; \
else $(MAKE) stamp-as-given ; fi
stamp-as-given:
echo "$(BUILD_STAMP)" > build/stamp.txt
stamp-as-inferred:
if [ -d ".git" ] ; then $(MAKE) stamp-from-git ; else $(MAKE) stamp-from-date ; fi
stamp-from-git:
echo `date +"%Y%m%d"`-`git log -1 --pretty=format:%h` > build/stamp.txt
stamp-from-date:
date +"%Y%m%d" > build/stamp.txt
# Created a copy of `SRC_CATALOG', so that we snapshot checksums, and
# start building from it. The packages are installed in user scope,
# but we set the add-on directory to "build/user", so that we don't
# affect the actual current user's installation (and to a large degree
# we're insulated from it):
build-from-catalog:
rm -rf build/user
rm -rf build/catalog-copy
$(USER_RACO) pkg catalog-copy "$(SRC_CATALOG)" build/catalog-copy
$(MAKE) server-cache-config
$(USER_RACO) pkg install --all-platforms $(SOURCE_USER_AUTO_q) $(REQUIRED_PKGS) $(DISTRO_BUILD_PKGS)
$(MAKE) set-server-config
$(USER_RACKET) -l- distro-build/pkg-info -o build/pkgs.rktd build/catalog-copy
$(USER_RACKET) -l distro-build/install-pkgs $(CONFIG_MODE_q) "$(PKGS) $(TEST_PKGS)" $(SOURCE_USER_AUTO_q) --all-platforms
$(USER_RACO) setup --avoid-main $(JOB_OPTIONS)
server-cache-config:
$(USER_RACO) pkg config -i --set download-cache-dir build/cache
$(USER_RACO) pkg config -i --set download-cache-max-files 1023
$(USER_RACO) pkg config -i --set download-cache-max-bytes 671088640
set-server-config:
$(USER_RACKET) -l distro-build/set-server-config build/user/config/config.rktd $(CONFIG_MODE_q) "" "" "$(DOC_SEARCH)" ""
# Although a client will build its own "collects", pack up the
# server's version to be used by each client, so that every client has
# exactly the same bytecode (which matters for SHA1-based dependency
# tracking):
origin-collects:
$(USER_RACKET) -l distro-build/pack-collects
# Now that we've built packages from local sources, create "built"
# versions of the packages from the installation into "build/user";
# set `PACK_BUILT_OPTIONS` `--mode <mode>` to force all packages to
# a specific mode, but the default infers `built` or `binary`
PACK_BUILT_OPTIONS =
built-catalog:
$(USER_RACKET) -l- distro-build/pack-built $(PACK_BUILT_OPTIONS) build/pkgs.rktd
# Run a catalog server to provide pre-built packages, as well
# as the copy of the server's "collects" tree:
built-catalog-server:
if [ -d ".git" ]; then git update-server-info ; fi
$(USER_RACKET) -l distro-build/serve-catalog $(CONFIG_MODE_q) "$(SERVER_HOSTS)" $(SERVER_PORT) $(USER_RACKET) $(SERVE_DURING_CMD_qq)
# Demonstrate how a catalog server for binary packages works,
# which involves creating package archives in "binary" mode
# instead of "built" mode:
binary-catalog:
$(USER_RACKET) -l- distro-build/pack-built --mode binary build/pkgs.rktd
binary-catalog-server:
$(USER_RACKET) -l- distro-build/serve-catalog --mode binary $(CONFIG_MODE_q) "$(SERVER_HOSTS)" $(SERVER_PORT)
# ------------------------------------------------------------
# On each supported platform (for an installer build):
#
# The `client' and `win-client' targets are also used by
# `distro-build/drive-clients', which is in turn run by the
# `installers' target.
#
# For a non-Windows machine, if "build/log" exists, then
# keep the "build/user" directory on the grounds that the
# client is the same as the server.
# Target selector: `base` or `cs-base` or `bc-base`
CLIENT_BASE = base
# Target selector: `win-base` or `win-cs-base` or `win-bc-base`
WIN32_CLIENT_BASE = win-base
SET_BUNDLE_CONFIG_q == $(BUNDLE_CONFIG) "$(INSTALL_NAME)" "$(BUILD_STAMP)" "$(DOC_SEARCH)" $(DIST_CATALOGS_q)
# Target selector: `bundle-from-server` or `bundle-cross-from-server`
BUNDLE_FROM_SERVER_TARGET = bundle-from-server
client:
if [ ! -d build/log ] ; then rm -rf build/user ; fi
$(MAKE) $(CLIENT_BASE) MORE_CONFIGURE_ARGS="$(MORE_CONFIGURE_ARGS) $(DISABLE_STATIC_LIBS)"
$(MAKE) distro-build-from-server
$(MAKE) $(BUNDLE_FROM_SERVER_TARGET)
$(USER_RACKET) -l distro-build/set-config $(SET_BUNDLE_CONFIG_q)
$(MAKE) installer-from-bundle
win-client:
IF EXIST build\user cmd /c del /f /s /q build\user
$(MAKE) $(WIN32_CLIENT_BASE)
$(MAKE) win-distro-build-from-server
$(MAKE) win-bundle-from-server
$(WIN32_RACKET) -l distro-build/set-config $(SET_BUNDLE_CONFIG_q)
$(MAKE) win-installer-from-bundle
# Sensible when creating a source distribution with built packages:
client-compile-any:
$(MAKE) client $(ANY_COMPILE_MACHINE_ARGS_qq) BUNDLE_FROM_SERVER_TARGET=bundle-cross-from-server
# Install the "distro-build" package from the server into
# a local build:
distro-build-from-server:
$(USER_RACO) pkg install $(REMOTE_USER_AUTO) distro-build-client
# Copy our local build into a "bundle/racket" build, dropping in the
# process things that should not be in an installer (such as the "src"
# directory). Then, replace the "collects" tree with the one from the
# server. Run `raco setup` in case the replacing "collects" tree needs
# recompiling. Install required packages next, because they may include
# packages that are needed to make core functionality work right
# (which as the SQLite3 library). At last, install the selected packages
# from the server, and the run a post-adjustment script.
bundle-from-server:
rm -rf bundle
mkdir -p bundle/racket
$(USER_RACKET) -l setup/unixstyle-install bundle racket bundle/racket
$(USER_RACKET) -l setup/winstrip bundle/racket
$(USER_RACKET) -l setup/winvers-change bundle/racket
$(USER_RACKET) -l- distro-build/unpack-collects $(UNPACK_COLLECTS_FLAGS) $(SERVER_URL_SCHEME)://$(SVR_PRT)/$(SERVER_COLLECTS_PATH)
$(IN_BUNDLE_RACO) setup --no-user $(JOB_OPTIONS) $(RECOMPILE_OPTIONS)
$(IN_BUNDLE_RACO) pkg install $(REMOTE_INST_AUTO) $(PKG_SOURCE_MODE) $(REQUIRED_PKGS)
$(IN_BUNDLE_RACO) pkg install $(REMOTE_INST_AUTO) $(PKG_SOURCE_MODE) $(PKGS)
$(USER_RACKET) -l setup/unixstyle-install post-adjust "$(SOURCE_MODE)" "$(PKG_SOURCE_MODE)" racket bundle/racket
# For a cross build, we still need to use `$(BUNDLE_RACO)` for
# installing packages. The host build must have all native libraries
# that installation will need.
bundle-cross-from-server:
rm -rf "build/zo`pwd`/bundle"
$(MAKE) bundle-from-server $(COPY_ARGS) IN_BUNDLE_RACO="$(PLAIN_RACKET) $(SETUP_MACHINE_FLAGS) $(BUNDLE_RACO_FLAGS)"
UPLOAD_q == --readme "$(README)" --upload "$(UPLOAD)" --desc "$(DIST_DESC)"
DIST_ARGS_q == $(UPLOAD_q) $(RELEASE_MODE) $(SOURCE_MODE) $(VERSIONLESS_MODE) \
$(MAC_PKG_MODE) $(TGZ_MODE) --packed-options "$(INSTALLER_OPTIONS)" \
--pre-process "$(INSTALLER_PRE_PROCESS_BASE64)" \
--post-process "$(INSTALLER_POST_PROCESS_BASE64)" \
"$(DIST_NAME)" $(DIST_BASE) $(DIST_DIR) "$(DIST_SUFFIX)" \
"$(SIGN_IDENTITY)" "$(OSSLSIGNCODE_ARGS_BASE64)"
# Create an installer from the build (with installed packages) that's
# in "bundle/racket":
installer-from-bundle:
$(USER_RACKET) -l- distro-build/installer $(DIST_ARGS_q)
win-distro-build-from-server:
$(WIN32_RACO) pkg install $(REMOTE_USER_AUTO) distro-build-client
win-bundle:
IF EXIST bundle cmd /c rmdir /S /Q bundle
cmd /c mkdir bundle\racket
$(WIN32_RACKET) -l setup/unixstyle-install bundle$(SOURCE_MODE) racket bundle\racket
$(WIN32_RACKET) -l setup/winstrip bundle\racket
$(WIN32_RACKET) -l setup/winvers-change bundle\racket
win-bundle-from-server:
$(MAKE) win-bundle
$(WIN32_RACKET) -l- distro-build/unpack-collects $(UNPACK_COLLECTS_FLAGS) $(SERVER_URL_SCHEME)://$(SVR_PRT)/$(SERVER_COLLECTS_PATH)
$(WIN32_IN_BUNDLE_RACO) setup --no-user -l racket/base
$(WIN32_IN_BUNDLE_RACO) pkg install $(REMOTE_INST_AUTO) $(PKG_SOURCE_MODE) $(REQUIRED_PKGS)
$(WIN32_IN_BUNDLE_RACO) pkg install $(REMOTE_INST_AUTO) $(PKG_SOURCE_MODE) $(PKGS)
win-installer-from-bundle:
$(WIN32_RACKET) -l- distro-build/installer $(DIST_ARGS_q)
# The `test-client` and `win-test-client` targets are optional test
# step for an installer build, were `TEST_PKGS` names extra packages
# to install, and `TEST_ARGS_q` is a set of arguments to `raco test`.
# This step will not make sense for some kinds of builds, such as
# source builds or cross-platform builds.
test-client:
$(BUNDLE_RACO) pkg install $(REMOTE_INST_AUTO) $(PKG_SOURCE_MODE) $(TEST_PKGS)
$(IN_BUNDLE_RACO) test $(TEST_ARGS_q)
win-test-client:
$(WIN32_BUNDLE_RACO) pkg install $(REMOTE_INST_AUTO) $(PKG_SOURCE_MODE) $(TEST_PKGS)
$(WIN32_IN_BUNDLE_RACO) test $(TEST_ARGS_q)
# ------------------------------------------------------------
# On a supported platform (for an installer build) after a `make site'
# has completed; SERVER, SERVER_PORT (usually 80), and SITE_PATH
# should be set, and other configurations are propagated; normally,
# README should be set (possibly to empty), because a site doesn't
# provide a generic "README.txt".
# Relative path on server for the site; include a trailing "/"
# if non-empty:
SITE_PATH =
FROM_SITE_ARGS == SERVER_CATALOG_PATH=$(SITE_PATH)catalog/ SERVER_COLLECTS_PATH=$(SITE_PATH)origin/ \
DIST_CATALOGS_q='$(SERVER_URL_SCHEME)://$(SERVER):$(SERVER_PORT)/$(SITE_PATH)catalog/ ""' \
DOC_SEARCH="$(SERVER_URL_SCHEME)://$(SERVER):$(SERVER_PORT)/$(SITE_PATH)doc/local-redirect/index.html" \
$(PROP_ARGS)
client-from-site:
$(MAKE) with-setup-flags NEXT_TARGET=plain-client-from-site
plain-client-from-site:
make client $(FROM_SITE_ARGS)
# ------------------------------------------------------------
# Drive installer build across server and clients:
DRIVE_ARGS_q == $(RELEASE_MODE) $(VERSIONLESS_MODE) $(SOURCE_MODE) \
$(CLEAN_MODE) $(SERVER_COMPILE_MACHINE) "$(CONFIG)" "$(CONFIG_MODE)" \
$(SERVER) $(SERVER_PORT) "$(SERVER_HOSTS)" \
"$(PKGS)" "$(DOC_SEARCH)" "$(DIST_NAME)" $(DIST_BASE) $(DIST_DIR)
DRIVE_DESCRIBE =
DRIVE_CMD_q == -l- distro-build/drive-clients $(DRIVE_DESCRIBE) $(DRIVE_ARGS_q)
# Full server build and clients drive, based on `CONFIG':
installers:
rm -rf build/installers
$(MAKE) server SERVE_DURING_CMD_qq='$(DRIVE_CMD_q)'
# Server is already built; start it and drive clients:
installers-from-built:
$(MAKE) with-setup-flags NEXT_TARGET=plain-installers-from-built
plain-installers-from-built:
$(MAKE) built-catalog-server SERVE_DURING_CMD_qq='$(DRIVE_CMD_q)'
# Just the clients, assuming server is already running:
drive-clients:
$(PLAIN_RACKET) $(DRIVE_CMD_q)
describe-clients:
$(MAKE) drive-clients DRIVE_DESCRIBE=--describe
# ------------------------------------------------------------
# Create installers, then assemble as a web site:
site:
$(MAKE) installers
$(MAKE) site-from-installers
DOC_CATALOGS = build/built/catalog build/native/catalog
site-from-installers:
$(MAKE) with-setup-flags NEXT_TARGET=plain-site-from-installers
plain-site-from-installers:
rm -rf build/docs
rm -rf "build/zo`pwd`/build/docs"
$(USER_RACKET) -l- distro-build/install-for-docs build/docs $(CONFIG_MODE_q) "$(PKGS)" $(DOC_CATALOGS)
$(USER_RACKET) -l- distro-build/assemble-site $(CONFIG_MODE_q) "$(DIST_BASE)"
# ------------------------------------------------------------
# Create a snapshot site:
snapshot-site:
$(MAKE) site
$(MAKE) snapshot-at-site
snapshot-at-site:
$(MAKE) with-setup-flags NEXT_TARGET=plain-snapshot-at-site
plain-snapshot-at-site:
$(USER_RACKET) -l- distro-build/manage-snapshots $(CONFIG_MODE_q) "$(DIST_BASE)"
# ------------------------------------------------------------
# Compatibility targets
win32-in-place:
$(MAKE) win-in-place
win32-as-is:
$(MAKE) win-as-is
win32-base:
$(MAKE) win-base
win32-cs:
$(MAKE) win-cs
win32-cs-in-place:
$(MAKE) win-cs-in-place
win32-cs-as-is:
$(MAKE) win-cs-as-is
win32-cs-base:
$(MAKE) win-cs-base
win32-both:
$(MAKE) win-both
win32-also-cs:
$(MAKE) win-also-cs
win32-client:
$(MAKE) win-client
win32-distro-build-from-server:
$(MAKE) win-distro-build-from-server
win32-bundle:
$(MAKE) win-bundle
win32-bundle-from-server:
$(MAKE) win-bundle-from-server
win32-installer-from-bundle:
$(MAKE) win-installer-from-bundle
win32-test-client:
$(MAKE) win-test-client
# ------------------------------------------------------------
# Remake "Makefile"
makemake: .makefile racket/src/makemake.rkt
racket racket/src/makemake.rkt .makefile > Makefile
# ------------------------------------------------------------
# About the `make` dialect of this file
#
# Roughly, write this makefile as if you are using POSIX `make`,
# except that variable values are propagated to recursive `$(MAKE)`
# requests as in GNU Make. The "makemake.rkt" compiler constructs a
# call graph and changes each `$(MAKE)` call to add any variables that
# should be propagated as explicit arguments, which means that it
# works for all `make` implementations and even `nmake` on Windows.
#
# Some variables are "higher order" in the sense that they are used to
# construct a target of a recursive `$(MAKE)`. The declaration of each
# such variable must be preceded by a "Target selector" declaration
# that enumerates the variable's possible values, as in
#
# # Target selector: `minimal` or `skip`
#
# That way, the call-graph construction can compute all of the
# potential targets of the recursive `$(MAKE)`.
#
# When a variable is declared with `==` instead of `=`, then it is not
# treated as a variable that must be propagated, but instead as a
# macro to be eagerly expanded. When a variable is defined with `:=`,
# then it is neither propagated nor expanded as a macro. Note that
# variables are propagated with the pattern VAR="$(VAR)", so it can
# work for variables with spaces, but not for variables with quotes.
#
# If a `$(MAKE)` is preceeded by `cd <dir> &&`, then it is not treated
# as a recursive `$(MAKE)` invocation in the sense of adding variables
# to propagate. Avoid variable names for propagated variables that
# might be the same as names in makefiles in other directories where
# the intent is *not* to propagate to those other makefiles, since GNU
# Make will continue to propagate any variable after it's propagated
# once.
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