build: Set subdir-objects automake option

Bump automake minimal version to 1.9.

diff --git a/.gitignore b/.gitignore
index b055d8c6d526b6e2cff861e3826d8edb19cce9f4..46ce104fbdf408b9619f791f3062c317774c6fea 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@ ChangeLog
 *.a
 *.log
 *.trs
+.dirstamp
 .deps/
 .libs/
 Makefile

diff --git a/configure.ac b/configure.ac
index 326bdb4586c29ec86008d3795e691d54fbf56182..ad5fa25f6763563e79a96d022eeda503f82731d3 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -6,7 +6,7 @@ AC_CONFIG_SRCDIR([src/fgetln.c])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
 
-AM_INIT_AUTOMAKE([1.8 foreign nostdinc no-dist-gzip dist-xz])
+AM_INIT_AUTOMAKE([1.9 foreign nostdinc subdir-objects no-dist-gzip dist-xz])
 
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])],
                             [AC_SUBST([AM_DEFAULT_VERBOSITY], [1])])