-version.h:
- ##
- ## We first create variables for the current git version and
- ## the locations of the version.h and version.h.tmpl files
- ##
- @echo -n "Generating version.h ... "
- @(version_h_tmpl="$(top_srcdir)/include/version.h.tmpl"; \
- if [ -f "$${version_h_tmpl}" ]; then \
- version_h="$(top_builddir)/include/version.h"; \
- ##
- ## We check the git version format we will use depending on
- ## whether or not we are in the master branch or on a tag
- ##
- git_branch="$$(git describe --all 2>/dev/null)"; \
- if [ -z "$${git_branch}" ]; then \
- git_version=""; \
- else \
- git_describe="$$(git describe)"; \
- if [ "$${git_branch}" == "$${git_describe}" ] || \
- [ "$${git_branch}" == "heads/master" ]; then \
- git_version="$${git_describe}"; \
- else \
- git_version="$$(git describe --long --all)"; \
- fi; \
- fi; \
- ##
- ## If the version.h file doesn't exist or is not up to date,
- ## We replace it by the version.h.tmpl file
- ##
- if [ ! -e "$${version_h}" ] || \
- [ "$${version_h_tmpl}" -nt "$${version_h}" ]; then \
- cp "$${version_h_tmpl}" "$${version_h}"; \
+## 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 we don't have a "version.i" or we have both files and they are different,
+## copy "version.i.tmp" over "version.i". This way the dependent targets are
+## only rebuilt when the version string changes.
+##
+version_verbose = $(version_verbose_@AM_V@)
+version_verbose_ = $(version_verbose_@AM_DEFAULT_V@)
+version_verbose_0 = @echo " GEN " $@;
+
+version.i:
+ $(version_verbose)rm -f version.i.tmp; \
+ if (test -r "$(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; \