[PATCH ocserv] warn if autogen isn't installed

[Jason Cooper]

Signed-off-by: Jason Cooper <jason at lakedaemon.net>
---
Tested with and without autogen.

 configure.ac    |    8 ++++++++
 doc/Makefile.am |    2 +-
 src/Makefile.am |    2 +-
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 1cb55ac..7460806 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,6 +17,14 @@ if [ test "$GCC" = "yes" ];then
 fi
 AC_PATH_PROG(CTAGS, ctags, /bin/true)
 AC_PATH_PROG(CSCOPE, cscope, /bin/true)
+AC_PATH_PROG(AUTOGEN, autogen, /bin/true)
+
+if test x"$AUTOGEN" = "x/bin/true"; then
+	AC_MSG_WARN([[
+***
+*** autogen not found.  We will not build manpages.
+*** ]])
+fi
 
 AC_CHECK_SIZEOF([unsigned long])
 AC_C_BIGENDIAN
diff --git a/doc/Makefile.am b/doc/Makefile.am
index faa1f35..596893c 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -4,5 +4,5 @@ dist_man_MANS = ocserv.1
 
 ocserv.1: ../src/ocserv-args.def
 	-sed 's/@subheading \(.*\)/@*\n at var{\1}\n@*/' $< > "$<".tmp && \
-	autogen -DMAN_SECTION=1 -Tagman-cmd.tpl "$<".tmp && \
+	@AUTOGEN@ -DMAN_SECTION=1 -Tagman-cmd.tpl "$<".tmp && \
 	rm -f "$<".tmp
diff --git a/src/Makefile.am b/src/Makefile.am
index 9806e23..17c11e2 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -28,4 +28,4 @@ ocserv_LDADD += $(LIBGNUTLS_LIBS) $(GDBM_LIBS) $(PAM_LIBS) $(LIBUTIL) \
 	$(LIBSECCOMP) $(LIBWRAP)
 
 ocserv-args.c ocserv-args.h: $(srcdir)/ocserv-args.def
-	-autogen $<
+	- at AUTOGEN@ $<
-- 
1.7.10.4