X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=include%2FMakefile.am;h=24f2f57aa2479a22093fdf802b290539cd6afd4e;hp=547857edb8f62e5072eeda76637cd4459d71876f;hb=88564da09144e7fd1202fe79aff1371478a69ecf;hpb=516f6cbe18eb229593a41eef7d0ed2567673d603

diff --git a/include/Makefile.am b/include/Makefile.am
index 547857edb..24f2f57aa 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -1,9 +1,83 @@
+##
+## 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 -n "Generating version.h ... "
+	@(version_h_tmpl="$(top_builddir)/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}"; \
+		fi; \
+		if [ -n "$${git_version}" ]; then \
+			##
+			## We remove the leading "v" for the version number
+			##
+			git_version="$$(echo "$${git_version}" | sed -r "s/^v([0-9])/\1/")"; \
+			##
+			## If we have a git version, we verify that it isn't the same
+			## as the one currently in the file (if there is one), as we
+			## don't want to update the file if it is already up to date
+			##
+			if [ $$(grep -cE "^#define GIT_VERSION \"?$${git_version}\"?$$" "$${version_h}") -eq 0 ]; then \
+				if [ $$(grep -c "^#define GIT_VERSION" "$${version_h}") -gt 0 ]; then \
+					##
+					## If there is already a GIT_VERSION defined,
+					## we just replace it by the new version
+					##
+					sed -i "s'^#define GIT_VERSION.*$$'#define GIT_VERSION \"$${git_version}\"'" "$${version_h}"; \
+				else \
+					##
+					## Else, we add a GIT_VERSION define
+					## containing our new version.
+					##
+					sed -i "s'^\(#define VERSION_H.*\)$$'\1\n\n#define GIT_VERSION \"$${git_version}\"'" "$${version_h}"; \
+				fi; \
+			fi; \
+		fi; \
+	fi)
+	@echo "ok"
+
+##
+## version.h is defined as a .PHONY file even if it's a real file as
+## we want our routine to be runned for each build.
+##
+.PHONY: version.h
+
 lttnginclude_HEADERS = \
 	lttng/health.h \
 	lttng/lttng.h \
 	lttng/lttng-error.h \
 	lttng/snapshot.h \
-	lttng/save.h
+	lttng/save.h \
+	version.h
 
 noinst_HEADERS = \
 	lttng/snapshot-internal.h \