Use gnulib to get cross-platform flock, and use it

2 files changed, 61 insertions, 0 deletions

diff --git a/m4/.gitignore b/m4/.gitignore
index 8bc56c8..307e3e0 100644
--- a/m4/.gitignore
+++ b/m4/.gitignore
@@ -4,3 +4,15 @@
 /ltversion.m4
 /lt~obsolete.m4
 /pkg.m4
+/00gnulib.m4
+/absolute-header.m4
+/flock.m4
+/gnulib-common.m4
+/gnulib-comp.m4
+/gnulib-tool.m4
+/include_next.m4
+/msvc-inval.m4
+/msvc-nothrow.m4
+/onceonly.m4
+/sys_file_h.m4
+/warn-on-use.m4
diff --git a/m4/gnulib-cache.m4 b/m4/gnulib-cache.m4
new file mode 100644
index 0000000..0b32dda
--- /dev/null
+++ b/m4/gnulib-cache.m4
@@ -0,0 +1,49 @@
+# Copyright (C) 2002-2017 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file.  If not, see <http://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+#
+# This file represents the specification of how gnulib-tool is used.
+# It acts as a cache: It is written and read by gnulib-tool.
+# In projects that use version control, this file is meant to be put under
+# version control, like the configure.ac and various Makefile.am files.
+
+
+# Specification in the form of a command-line invocation:
+#   gnulib-tool --import --local-dir=gl --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --no-conditional-dependencies --libtool --macro-prefix=gl bootstrap flock
+
+# Specification in the form of a few gnulib-tool.m4 macro invocations:
+gl_LOCAL_DIR([gl])
+gl_MODULES([
+  bootstrap
+  flock
+])
+gl_AVOID([])
+gl_SOURCE_BASE([lib])
+gl_M4_BASE([m4])
+gl_PO_BASE([])
+gl_DOC_BASE([doc])
+gl_TESTS_BASE([tests])
+gl_LIB([libgnu])
+gl_MAKEFILE_NAME([])
+gl_LIBTOOL
+gl_MACRO_PREFIX([gl])
+gl_PO_DOMAIN([])
+gl_WITNESS_C_MACRO([])