+ AS_IF([test "x$in_git_repo" = "xyes"], [
+ # this is an error because we're in the Git repo, which
+ # means the man pages are not already generated for us,
+ # thus asciidoc/xmlto are required because we were asked
+ # to build the man pages
+ AC_MSG_ERROR([
+Both asciidoc and xmlto are needed to build the LTTng man pages. Use
+--disable-man-pages to disable building the man pages, in which case
+they will not be installed.
+ ])
+ ], [
+ # only warn here: since we're in the tarball, the man
+ # pages should already be generated at this point, thus
+ # asciidoc/xmlto are not strictly required
+ AC_MSG_WARN([
+Both asciidoc and xmlto are needed to build the LTTng man pages. Note
+that the man pages are already built in this distribution tarball, so
+asciidoc and xmlto are only needed if you intend to modify their
+sources. Use --disable-man-pages to completely disable building
+and installing the man pages.
+ ])
+ ])
+ ], [
+ have_asciidoc_xmlto=yes