build: fix error with automake-1.9

src/Makefile.am: C objects in subdir but "AM_PROG_CC_C_O"
not in "configure.ac"

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>

diff --git a/.gitignore b/.gitignore
index dbd9ac7..d1239be 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,7 @@ Makefile.in
 
 /aclocal.m4
 /autom4te.cache
+/compile
 /config.*
 /configure
 /depcomp

diff --git a/configure.ac b/configure.ac
index ff00d21..19d12e9 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -10,6 +10,7 @@ dnl kernel style compile messages
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 AC_PROG_CC
+AM_PROG_CC_C_O
 AC_EXEEXT
 AC_DISABLE_STATIC
 AM_PROG_LIBTOOL