From: Harlan Stenn <stenn@ntp.org>
Date: Fri, 9 Nov 2007 07:10:13 +0000 (-0500)
Subject: Work around a VPATH difference in FreeBSD's 'make' command
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=034ff5739d2bdc60f7526e6de4b9f468f675daee;p=thirdparty%2Fntp.git

Work around a VPATH difference in FreeBSD's 'make' command

bk: 473407d5r4opj4TViuDTNP-JWvRN4A
---

diff --git a/ChangeLog b/ChangeLog
index b858da5da9..14c138a5f8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,4 @@
+* Work around a VPATH difference in FreeBSD's 'make' command.
 * Update bugreport URL.
 * Update -I documentation.
 * [Bug 713] Fix bug reporting information.
diff --git a/configure.ac b/configure.ac
index acd46dd6f0..f69b9c6ff2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -70,6 +70,7 @@ esac
 
 AMU_OS_CFLAGS
 NTP_DIR_SEP
+NTP_VPATH_HACK
 
 # NTP has (so far) been relying on leading-edge autogen.
 # Therefore, by default:
diff --git a/m4/ntp_vpathhack.m4 b/m4/ntp_vpathhack.m4
new file mode 100644
index 0000000000..d6d3abbefb
--- /dev/null
+++ b/m4/ntp_vpathhack.m4
@@ -0,0 +1,23 @@
+dnl ######################################################################
+dnl Are we using FreeBSD's make?
+AC_DEFUN([NTP_VPATH_HACK], [
+AC_CACHE_CHECK([to see if we need a VPATH hack], ac_cv_vpath_hack,
+[
+  case "$ac_cv_vpath_hack" in
+   '')
+    ac_cv_vpath_hack="no"
+    case "$srcdir::$host_os" in
+     ??*::freebsd*)
+	case "`${MAKE-make} -v -f /dev/null 2>/dev/null | grep 'GNU Make version '`" in
+	 '')
+	    ac_cv_vpath_hack="yes"
+	    ;;
+	esac
+	;;
+    esac
+    ;;
+  esac
+])
+AM_CONDITIONAL([VPATH_HACK], [test x$ac_cv_vpath_hack = xyes])
+])
+dnl ======================================================================
diff --git a/ntpd/Makefile.am b/ntpd/Makefile.am
index a46031ea1d..452aec9e0c 100644
--- a/ntpd/Makefile.am
+++ b/ntpd/Makefile.am
@@ -11,7 +11,17 @@ AM_CPPFLAGS= -I$(top_srcdir)/include -I../include $(LIBOPTS_CFLAGS)
 LDADD=	version.o libntpd.a @LIBPARSE@
 AM_YFLAGS=	-d -t
 
-BUILT_SOURCES=	ntp_parser.c ntp_parser.h	\
+if VPATH_HACK
+VPHACK=	vphack
+else
+VPHACK=
+endif
+
+vphack:
+	test -e ntp_parser.c || ln -s $(srcdir)/ntp_parser.c .
+	test -e ntp_parser.h || ln -s $(srcdir)/ntp_parser.h .
+
+BUILT_SOURCES=	${VPHACK} ntp_parser.c ntp_parser.h	\
 		ntpd-opts.c ntpd-opts.h ntpd.1 ntpd-opts.texi ntpd-opts.menu
 
 man_MANS=	ntpd.1