130 lines
4.5 KiB
Makefile
130 lines
4.5 KiB
Makefile
#### Notes ####################################################################
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# This build process is done in three stages (out-of-source build):
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# 1. copy source files to the local build directory.
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# 2. build dir: replace the string "$INSTALL_PREFIX" with the value of $PREFIX
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# 3. install files from the build directory to the target directory.
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#
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# Why this dance?
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# * To fully support that a user can install this project to a custom path e.g.
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# $(PREFIX=/usr/local make install), we need to modify the files that refer
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# to other files on disk. We do this by having a placeholder
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# "$INSTALL_PREFIX" that is substituted with the value of $PREFIX when
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# installed.
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# * We don't want to modify the files that are controlled by git, thus let's
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# copy them to a build directory and then modify.
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#### Non-file targets #########################################################
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.PHONY: all help clean uninstall \
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install install-scripts install-conf install-systemd
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#### Macros ###################################################################
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NOW := $(shell date +%Y-%m-%d_%H:%M:%S)
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# GNU and macOS install have incompatible command line arguments.
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GNU_INSTALL := $(shell install --version 2>/dev/null | \
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grep -q GNU && echo true || echo false)
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ifeq ($(GNU_INSTALL),true)
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BAK_SUFFIX = --suffix=.$(NOW).bak
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else
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BAK_SUFFIX = -B .$(NOW).bak
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endif
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# Create parent directories of a file, if not existing.
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# Reference: https://stackoverflow.com/a/25574592/265508
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MKDIR_PARENTS=sh -c '\
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dir=$$(dirname $$1); \
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test -d $$dir || mkdir -p $$dir \
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' MKDIR_PARENTS
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# Source directories.
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DIR_SCRIPT = sbin
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DIR_CONF = etc/restic
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DIR_SYSTEMD = usr/lib/systemd/system
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# Source files.
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SRCS_SCRIPT = $(filter-out %cron_mail, $(wildcard $(DIR_SCRIPT)/*))
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SRCS_CONF = $(wildcard $(DIR_CONF)/*)
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SRCS_SYSTEMD = $(wildcard $(DIR_SYSTEMD)/*)
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# Local build directory. Sources will be copied here,
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# modified and then installed from this directory.
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BUILD_DIR := build
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BUILD_DIR_SCRIPT = $(BUILD_DIR)/$(DIR_SCRIPT)
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BUILD_DIR_CONF = $(BUILD_DIR)/$(DIR_CONF)
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BUILD_DIR_SYSTEMD = $(BUILD_DIR)/$(DIR_SYSTEMD)
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# Sources copied to build directory.
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BUILD_SRCS_SCRIPT = $(addprefix $(BUILD_DIR)/, $(SRCS_SCRIPT))
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BUILD_SRCS_CONF = $(addprefix $(BUILD_DIR)/, $(SRCS_CONF))
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BUILD_SRCS_SYSTEMD = $(addprefix $(BUILD_DIR)/, $(SRCS_SYSTEMD))
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# Destination directories
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DEST_DIR_SCRIPT = $(PREFIX)/$(DIR_SCRIPT)
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DEST_DIR_CONF = $(PREFIX)/$(DIR_CONF)
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DEST_DIR_SYSTEMD = $(PREFIX)/$(DIR_SYSTEMD)
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# Destination file targets.
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DEST_TARGS_SCRIPT = $(addprefix $(PREFIX)/, $(SRCS_SCRIPT))
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DEST_TARGS_CONF = $(addprefix $(PREFIX)/, $(SRCS_CONF))
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DEST_TARGS_SYSTEMD = $(addprefix $(PREFIX)/, $(SRCS_SYSTEMD))
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INSTALLED_FILES = $(DEST_TARGS_SCRIPT) $(DEST_TARGS_CONF) $(DEST_TARGS_SYSTEMD)
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#### Targets ##################################################################
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# target: all - Default target.
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all: install
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# target: help - Display all targets.
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help:
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@egrep "#\starget:" [Mm]akefile | \
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sed 's/\s-\s/\t\t\t/' | cut -d " " -f3- | sort -d
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# target: clean - Remove build files.
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clean:
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$(RM) -r $(BUILD_DIR)
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# target: uninstall - Uninstall ALL files from the install targets.
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uninstall:
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@for file in $(INSTALLED_FILES); do \
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echo $(RM) $$file; \
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$(RM) $$file; \
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done
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# To change the installation root path,
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# set the PREFIX variable in your shell's environment, like:
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# $ PREFIX=/usr/local make install
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# $ PREFIX=/tmp/test make install
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# target: install - Install all files
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install: install-scripts install-conf install-systemd
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# Install targets. Prereq build sources as well,
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# so that build dir is re-created if deleted.
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# target: install-scripts - Install executables.
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install-scripts: $(DEST_TARGS_SCRIPT) $(BUILD_SRCS_SCRIPT)
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# target: install-conf - Install restic configuration files.
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install-conf: $(DEST_TARGS_CONF) $(BUILD_SRCS_CONF)
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# target: install-systemd - Install systemd timer and service files.
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install-systemd: $(DEST_TARGS_SYSTEMD) $(BUILD_SRCS_SYSTEMD)
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# Copies sources to build directory & replace "$INSTALL_PREFIX".
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$(BUILD_DIR)/% : %
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${MKDIR_PARENTS} $@
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cp $< $@
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sed -i.bak -e 's|$$INSTALL_PREFIX|$(PREFIX)|g' $@; rm $@.bak
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# Install destination script files.
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$(DEST_DIR_SCRIPT)/%: $(BUILD_DIR_SCRIPT)/%
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${MKDIR_PARENTS} $@
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install -m 0744 $< $@
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# Install destination conf files. Additionally backup existing files.
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$(DEST_DIR_CONF)/%: $(BUILD_DIR_CONF)/%
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${MKDIR_PARENTS} $@
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install -m 0600 -b $(BAK_SUFFIX) $< $@
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# Install destination systemd files.
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$(DEST_DIR_SYSTEMD)/%: $(BUILD_DIR_SYSTEMD)/%
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${MKDIR_PARENTS} $@
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install -m 0644 $< $@
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