Import `pipe-posix' module from gnulib.

* lib/Makefile.am:
* lib/pipe.c:
* m4/gnulib-cache.m4:
* m4/gnulib-comp.m4:
* m4/pipe.m4: Add pipe-posix module.

3 files changed, 25 insertions, 1 deletions

diff --git a/m4/gnulib-cache.m4 b/m4/gnulib-cache.m4
index f8a973759..fe243f8ee 100644
--- a/m4/gnulib-cache.m4
+++ b/m4/gnulib-cache.m4
@@ -27,7 +27,7 @@
 
 
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=3 --no-conditional-dependencies --libtool --macro-prefix=gl --no-vc-files accept alignof alloca-opt announce-gen autobuild bind byteswap canonicalize-lgpl ceil clock-time close connect dirfd duplocale environ extensions flock floor fpieee frexp full-read full-write func gendocs getaddrinfo getpeername getsockname getsockopt git-version-gen gitlog-to-changelog gnu-web-doc-update gnupload havelib iconv_open-utf inet_ntop inet_pton isinf isnan ldexp lib-symbol-versions lib-symbol-visibility libunistring listen localcharset locale log1p maintainer-makefile malloc-gnu malloca nl_langinfo nproc open pipe2 putenv recv recvfrom regex rename select send sendto setenv setsockopt shutdown socket stat-time stdlib strftime striconveh string sys_stat times trunc verify vsnprintf warnings wchar
+#   gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=3 --no-conditional-dependencies --libtool --macro-prefix=gl --no-vc-files accept alignof alloca-opt announce-gen autobuild bind byteswap canonicalize-lgpl ceil clock-time close connect dirfd duplocale environ extensions flock floor fpieee frexp full-read full-write func gendocs getaddrinfo getpeername getsockname getsockopt git-version-gen gitlog-to-changelog gnu-web-doc-update gnupload havelib iconv_open-utf inet_ntop inet_pton isinf isnan ldexp lib-symbol-versions lib-symbol-visibility libunistring listen localcharset locale log1p maintainer-makefile malloc-gnu malloca nl_langinfo nproc open pipe-posix pipe2 putenv recv recvfrom regex rename select send sendto setenv setsockopt shutdown socket stat-time stdlib strftime striconveh string sys_stat times trunc verify vsnprintf warnings wchar
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([gnulib-local])
@@ -84,6 +84,7 @@ gl_MODULES([
   nl_langinfo
   nproc
   open
+  pipe-posix
   pipe2
   putenv
   recv
diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
index 8dc269161..3a8172b87 100644
--- a/m4/gnulib-comp.m4
+++ b/m4/gnulib-comp.m4
@@ -146,6 +146,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module nproc:
   # Code from module open:
   # Code from module pathmax:
+  # Code from module pipe-posix:
   # Code from module pipe2:
   # Code from module putenv:
   # Code from module raise:
@@ -545,6 +546,11 @@ AC_SUBST([LTALLOCA])
   fi
   gl_FCNTL_MODULE_INDICATOR([open])
   gl_PATHMAX
+  gl_FUNC_PIPE
+  if test $HAVE_PIPE = 0; then
+    AC_LIBOBJ([pipe])
+  fi
+  gl_UNISTD_MODULE_INDICATOR([pipe])
   gl_FUNC_PIPE2
   gl_UNISTD_MODULE_INDICATOR([pipe2])
   gl_FUNC_PUTENV
@@ -994,6 +1000,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/nproc.h
   lib/open.c
   lib/pathmax.h
+  lib/pipe.c
   lib/pipe2.c
   lib/printf-args.c
   lib/printf-args.h
@@ -1183,6 +1190,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/off_t.m4
   m4/open.m4
   m4/pathmax.m4
+  m4/pipe.m4
   m4/pipe2.m4
   m4/printf.m4
   m4/putenv.m4
diff --git a/m4/pipe.m4 b/m4/pipe.m4
new file mode 100644
index 000000000..583128332
--- /dev/null
+++ b/m4/pipe.m4
@@ -0,0 +1,15 @@
+# pipe.m4 serial 2
+dnl Copyright (C) 2010-2013 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_PIPE],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+  AC_CHECK_FUNCS_ONCE([pipe])
+  if test $ac_cv_func_pipe != yes; then
+    HAVE_PIPE=0
+  fi
+])