include/Makefile.am

   1 ##
   2 ## This target generates an include file that contains the git version
   3 ## string of the current branch, it must be continuously updated when
   4 ## we build in the git repo and shipped in dist tarballs to reflect the
   5 ## status of the tree when it was generated. If the tree is clean and
   6 ## the current commit is tag a starting with "v", consider this a
   7 ## release version and set an empty git version.
   8 ##
   9 ## Here is what the inline script does:
  10 ##
  11 ## First, delete any stale "version.i.tmp" file.
  12 ##
  13 ## If "bootstrap" and ".git" exists in the top source directory and the git
  14 ## executable is available, get the current git version string in the form:
  15 ##
  16 ##  "latest_tag"(-"number_of_commits_on_top")(-g"latest_commit_hash")(-dirty)
  17 ##
  18 ## And store it in "version.i.tmp", if the current commit is tagged, the tag
  19 ## starts with "v" and the tree is clean, consider this a release version and
  20 ## overwrite the git version with an empty string in "version.i.tmp".
  21 ##
  22 ## If we don't have a "version.i.tmp" nor a "version.i", generate an empty
  23 ## string as a failover. If a "version.i" is present, for example when building
  24 ## from a distribution tarball, get the git_version using grep.
  25 ##
  26 ## Fetch the EXTRA_VERSION_NAME define from "version/extra_version_name" and output it
  27 ## to "version.i.tmp".
  28 ##
  29 ## Fetch the EXTRA_VERSION_DESCRIPTION define from "version/extra_version_description",
  30 ## sanitize and format it with a sed script to replace all non-alpha-numeric values
  31 ## with "-" and join all lines by replacing "\n" with litteral string c-style "\n\t" and
  32 ## output it to "version.i.tmp".
  33 ##
  34 ## If we don't have a "version.i" or we have both files (version.i, version.i.tmp)
  35 ## and they are different, copy "version.i.tmp" over "version.i".
  36 ## This way the dependent targets are only rebuilt when the git version
  37 ## string or either one of extra version string change.
  38 ##
  39 version_verbose = $(version_verbose_@AM_V@)
  40 version_verbose_ = $(version_verbose_@AM_DEFAULT_V@)
  41 version_verbose_0 = @echo "  GEN       " $@;
  42
  43 version.i:
  44         $(version_verbose)rm -f version.i.tmp; \
  45         if (test -r "$(top_srcdir)/bootstrap" && test -r "$(top_srcdir)/.git") && \
  46                         test -x "`which git 2>&1;true`"; then \
  47                 GIT_VERSION_STR="`cd "$(top_srcdir)" && git describe --tags --dirty`"; \
  48                 GIT_CURRENT_TAG="`cd "$(top_srcdir)" && git describe --tags --exact-match --match="v[0-9]*" HEAD 2> /dev/null`"; \
  49                 echo "#define GIT_VERSION \"$$GIT_VERSION_STR\"" > version.i.tmp; \
  50                 if ! $(GREP) -- "-dirty" version.i.tmp > /dev/null && \
  51                                 test "x$$GIT_CURRENT_TAG" != "x"; then \
  52                         echo "#define GIT_VERSION \"\"" > version.i.tmp; \
  53                 fi; \
  54         fi; \
  55         if test ! -f version.i.tmp; then \
  56                 if test -f version.i; then \
  57                         $(GREP) "^#define \bGIT_VERSION\b.*" version.i > version.i.tmp; \
  58                 else \
  59                         echo '#define GIT_VERSION ""' > version.i.tmp; \
  60                 fi; \
  61         fi; \
  62         echo "#define EXTRA_VERSION_NAME \"`$(SED) -n '1p' "$(top_srcdir)/version/extra_version_name" 2> /dev/null`\"" >> version.i.tmp; \
  63         echo "#define EXTRA_VERSION_DESCRIPTION \"`$(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; \
  64         if test ! -f version.i || \
  65                         test x"`cat version.i.tmp`" != x"`cat version.i`"; then \
  66                 mv version.i.tmp version.i; \
  67         fi; \
  68         rm -f version.i.tmp; \
  69         true
  70
  71 ##
  72 ## version.i is defined as a .PHONY target even if it's a real file,
  73 ## we want the target to be re-run on every make.
  74 ##
  75 .PHONY: version.i
  76
  77 CLEANFILES = version.i.tmp
  78
  79 ##
  80 ## Only clean "version.i" on dist-clean, we need to keep it on regular
  81 ## clean when it's part of a dist tarball.
  82 ##
  83 DISTCLEANFILES = version.i
  84
  85 lttnginclude_HEADERS = \
  86         lttng/health.h \
  87         lttng/lttng.h \
  88         lttng/constant.h \
  89         lttng/channel.h \
  90         lttng/domain.h \
  91         lttng/event.h \
  92         lttng/handle.h \
  93         lttng/session.h \
  94         lttng/lttng-error.h \
  95         lttng/snapshot.h \
  96         lttng/save.h \
  97         lttng/load.h
  98
  99 noinst_HEADERS = \
 100         lttng/snapshot-internal.h \
 101         lttng/health-internal.h \
 102         lttng/save-internal.h \
 103         lttng/load-internal.h \
 104         version.h \
 105         version.i