-if LTTNG_TOOLS_BUILD_GIT_SOURCE
-GIT_DESCRIBE_CMD = (cd $(top_srcdir); git describe)
-else
-GIT_DESCRIBE_CMD = /bin/true
-endif
-
+## SPDX-License-Identifier: GPL-2.0-only
##
-## The version.h file must be verified and generated or updated if the
-## git commit id (called git version here) changed since the last build
-## of lttng-tools.
-##
-version.h:
- ##
- ## We first create variables for the current git version and
- ## the locations of the version.h and version.h.tmpl files.
- ##
- @echo $(ECHO_N) "Generating version.h... $(ECHO_C)"
- @(version_h_tmpl="$(top_srcdir)/include/version.h.tmpl"; \
- if [ -f "$${version_h_tmpl}" ]; then \
- version_h="$(top_builddir)/include/version.h"; \
- ##
- ## Check whether we are in a git repo.
- ##
- git_describe="$$($(GIT_DESCRIBE_CMD) 2>/dev/null)"; \
- if [ $$? -eq 0 ]; then \
- git_version="$${git_describe}"; \
- else \
- git_version=""; \
- fi; \
- ##
- ## If the version.h file doesn't exist or is not up to date,
- ## We replace it by the version.h.tmpl file.
- ##
- if [ ! -e "$${version_h}" ] || \
- [ "$${version_h_tmpl}" -nt "$${version_h}" ]; then \
- cp "$${version_h_tmpl}" "$${version_h}"; \
+## This target generates an include file that contains the git version
+## string of the current branch, it must be continuously updated when
+## we build in the git repo and shipped in dist tarballs to reflect the
+## status of the tree when it was generated. If the tree is clean and
+## the current commit is tag a starting with "v", consider this a
+## release version and set an empty git version.
+##
+## Here is what the inline script does:
+##
+## First, delete any stale "version.i.tmp" file.
+##
+## If "bootstrap" and ".git" exists in the top source directory and the git
+## executable is available, get the current git version string in the form:
+##
+## "latest_tag"(-"number_of_commits_on_top")(-g"latest_commit_hash")(-dirty)
+##
+## And store it in "version.i.tmp", if the current commit is tagged, the tag
+## starts with "v" and the tree is clean, consider this a release version and
+## overwrite the git version with an empty string in "version.i.tmp".
+##
+## If we don't have a "version.i.tmp" nor a "version.i", generate an empty
+## string as a failover. If a "version.i" is present, for example when building
+## from a distribution tarball, get the git_version using grep.
+##
+## Fetch the EXTRA_VERSION_NAME define from "version/extra_version_name" and output it
+## to "version.i.tmp".
+##
+## Fetch the EXTRA_VERSION_DESCRIPTION define from "version/extra_version_description",
+## sanitize and format it with a sed script to replace all non-alpha-numeric values
+## with "-" and join all lines by replacing "\n" with litteral string c-style "\n\t" and
+## output it to "version.i.tmp".
+##
+## Repeat the same logic for the "version/extra_patches" directory.
+## Data fetched from "version/extra_patches" must be sanitized and
+## formatted.
+## The data is fetched using "ls" with an ignore pattern for the README file.
+## The sanitize step uses sed with a script to replace all
+## non-alpha-numeric values, except " " (space), to "-".
+## The formatting step uses sed with a script to join all lines
+## by replacing "\n" with litteral string c-style "\n\t".
+##
+## If we don't have a "version.i" or we have both files (version.i, version.i.tmp)
+## and they are different, copy "version.i.tmp" over "version.i".
+## This way the dependent targets are only rebuilt when the git version
+## string or either one of extra version string change.
+##
+version_verbose = $(version_verbose_@AM_V@)
+version_verbose_ = $(version_verbose_@AM_DEFAULT_V@)
+version_verbose_0 = @echo " GEN " $@;
+
+version.i:
+ $(version_verbose)rm -f version.i.tmp; \
+ if (test ! -f version.i && test -f "$(top_srcdir)/include/version.i"); then \
+ cp "$(top_srcdir)/include/version.i" version.i; \
+ fi; \
+ if (test -r "$(top_srcdir)/bootstrap" && test -r "$(top_srcdir)/.git") && \
+ test -x "`which git 2>&1;true`"; then \
+ GIT_VERSION_STR="`cd "$(top_srcdir)" && git describe --tags --dirty`"; \
+ GIT_CURRENT_TAG="`cd "$(top_srcdir)" && git describe --tags --exact-match --match="v[0-9]*" HEAD 2> /dev/null`"; \
+ echo "#define GIT_VERSION \"$$GIT_VERSION_STR\"" > version.i.tmp; \
+ if ! $(GREP) -- "-dirty" version.i.tmp > /dev/null && \
+ test "x$$GIT_CURRENT_TAG" != "x"; then \
+ echo "#define GIT_VERSION \"\"" > version.i.tmp; \
fi; \
- echo $(ECHO_N) "git version: \"$${git_version}\"$(ECHO_C)"; \
- ##
- ## We verify that git_version isn't the same as the one
- ## currently in the file (if there is one), as we don't
- ## want to update the file if it is already up to date.
- ##
- version_match='^#define GIT_VERSION.*'; \
- old_version=$$($(GREP) "$${version_match}" "$${version_h}"); \
- new_version="#define GIT_VERSION \"$${git_version}\""; \
- if [ x"$${old_version}" != x"$${new_version}" ]; then \
- $(SED) -i -e "s'$${version_match}'$${new_version}'" "$${version_h}"; \
+ fi; \
+ if test ! -f version.i.tmp; then \
+ if test -f version.i; then \
+ $(GREP) "^#define \bGIT_VERSION\b.*" version.i > version.i.tmp; \
else \
- echo $(ECHO_N) " (cached)$(ECHO_C)"; \
+ echo '#define GIT_VERSION ""' > version.i.tmp; \
fi; \
- echo $(ECHO_N) "... $(ECHO_C)"; \
- fi)
- @echo "$(ECHO_T)ok"
+ fi; \
+ echo "#define EXTRA_VERSION_NAME \"`$(SED) -n '1p' "$(top_srcdir)/version/extra_version_name" 2> /dev/null`\"" >> version.i.tmp; \
+ echo "#define EXTRA_VERSION_DESCRIPTION \"`$(SED) -E ':a ; N ; $$!ba ; s/[^a-zA-Z0-9 \n\t\.,]/-/g ; s/\r{0,1}\n/\\\n\\\t/g' "$(top_srcdir)/version/extra_version_description" 2> /dev/null`\"" >> version.i.tmp; \
+ echo "#define EXTRA_VERSION_PATCHES \"`ls -1 "$(top_srcdir)/version/extra_patches" | $(GREP) -v '^README' | $(SED) -E ':a ; N ; $$!ba ; s/[^a-zA-Z0-9 \n\t\.]/-/g ; s/\r{0,1}\n/\\\n\\\t/g' 2> /dev/null`\"" >> version.i.tmp; \
+ if test ! -f version.i || \
+ test x"`cat version.i.tmp`" != x"`cat version.i`"; then \
+ mv version.i.tmp version.i; \
+ fi; \
+ rm -f version.i.tmp; \
+ true
##
-## version.h is defined as a .PHONY file even if it's a real file as
-## we want our routine to be ran for each build.
+## version.i is defined as a .PHONY target even if it's a real file,
+## we want the target to be re-run on every make.
##
-.PHONY: version.h
+.PHONY: version.i
-CLEANFILES = version.h
+CLEANFILES = version.i.tmp
-nodist_noinst_HEADERS = \
- version.h
+##
+## Only clean "version.i" on dist-clean, we need to keep it on regular
+## clean when it's part of a dist tarball.
+##
+DISTCLEANFILES = version.i
lttnginclude_HEADERS = \
lttng/health.h \
lttng/snapshot.h \
lttng/save.h \
lttng/load.h \
- version.h.tmpl
+ lttng/endpoint.h \
+ lttng/rotation.h \
+ lttng/location.h \
+ lttng/userspace-probe.h \
+ lttng/session-descriptor.h \
+ lttng/destruction-handle.h \
+ lttng/clear.h \
+ lttng/clear-handle.h \
+ lttng/tracker.h \
+ lttng/kernel-probe.h
+
+lttngactioninclude_HEADERS= \
+ lttng/action/action.h \
+ lttng/action/group.h \
+ lttng/action/notify.h \
+ lttng/action/rotate-session.h \
+ lttng/action/snapshot-session.h \
+ lttng/action/start-session.h \
+ lttng/action/stop-session.h
+
+lttngconditioninclude_HEADERS= \
+ lttng/condition/condition.h \
+ lttng/condition/buffer-usage.h \
+ lttng/condition/session-consumed-size.h \
+ lttng/condition/session-rotation.h \
+ lttng/condition/evaluation.h
+
+lttngnotificationinclude_HEADERS= \
+ lttng/notification/channel.h \
+ lttng/notification/notification.h
+
+lttngtriggerinclude_HEADERS= \
+ lttng/trigger/trigger.h
+
+lttngeventruleinclude_HEADERS= \
+ lttng/event-rule/event-rule.h \
+ lttng/event-rule/kprobe.h \
+ lttng/event-rule/syscall.h \
+ lttng/event-rule/uprobe.h \
+ lttng/event-rule/tracepoint.h
noinst_HEADERS = \
lttng/snapshot-internal.h \
lttng/health-internal.h \
lttng/save-internal.h \
- lttng/load-internal.h
+ lttng/load-internal.h \
+ lttng/action/action-internal.h \
+ lttng/action/group-internal.h \
+ lttng/action/notify-internal.h \
+ lttng/action/rotate-session-internal.h \
+ lttng/action/snapshot-session-internal.h \
+ lttng/action/start-session-internal.h \
+ lttng/action/stop-session-internal.h \
+ lttng/condition/condition-internal.h \
+ lttng/condition/buffer-usage-internal.h \
+ lttng/condition/session-consumed-size-internal.h \
+ lttng/condition/evaluation-internal.h \
+ lttng/condition/session-rotation-internal.h \
+ lttng/notification/notification-internal.h \
+ lttng/trigger/trigger-internal.h \
+ lttng/endpoint-internal.h \
+ lttng/notification/channel-internal.h \
+ lttng/channel-internal.h \
+ lttng/domain-internal.h \
+ lttng/event-internal.h \
+ lttng/rotate-internal.h \
+ lttng/ref-internal.h \
+ lttng/location-internal.h \
+ lttng/userspace-probe-internal.h \
+ lttng/session-internal.h \
+ lttng/session-descriptor-internal.h \
+ lttng/kernel-probe-internal.h \
+ lttng/event-rule/event-rule-internal.h \
+ lttng/event-rule/kprobe-internal.h \
+ lttng/event-rule/syscall-internal.h \
+ lttng/event-rule/uprobe-internal.h \
+ lttng/event-rule/tracepoint-internal.h \
+ version.h \
+ version.i
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