add _HEADERS primaries to Makefile.am snippets for installable headers * modules/alloca-opt, modules/arg-nonnull, modules/argz, modules/arpa_inet, modules/byteswap, modules/c++defs, modules/ctype, modules/dirent, modules/errno, modules/fcntl-h, modules/float, modules/fnmatch, modules/getopt-posix, modules/glob, modules/iconv-h, modules/iconv_open, modules/inttypes, modules/langinfo, modules/link-warning, modules/locale, modules/math, modules/netdb, modules/netinet_in, modules/poll-h, modules/pthread, modules/pty, modules/sched, modules/search, modules/selinux-h, modules/signal, modules/spawn, modules/stdarg, modules/stdbool, modules/stddef, modules/stdint, modules/stdio, modules/stdlib, modules/string, modules/strings, modules/sys_file, modules/sys_ioctl, modules/sys_select, modules/sys_socket, modules/sys_stat, modules/sys_time, modules/sys_times, modules/sys_utsname, modules/sys_wait, modules/sysexits, modules/termios, modules/time, modules/unistd, modules/unitypes, modules/unused-parameter, modules/warn-on-use, modules/wchar, modules/wctype (Makefile.am): Add nodist_include_HEADERS, nobase_nodist_include_HEADERS and EXTRA_HEADERS declarations for potentially installable header files. * gnulib-tool: Initialize nodist_include_HEADERS, nobase_nodist_include_HEADERS and EXTRA_HEADERS to prime for new `.*_HEADERS +=' declarations. (func_emit_lib_Makefile_am): Edit away new nodist_include_HEADERS, nobase_nodist_include_HEADERS and EXTRA_HEADERS declarations by default, reverting the Makefile.am snippets above to their original condition prior to this change *unless* the gnulib library is being installed.

Description:
A <sys/select.h> for systems lacking it.

Files:
lib/sys_select.in.h
m4/sys_select_h.m4

Depends-on:
include_next
c++defs
sys_socket
sys_time
warn-on-use

configure.ac:
gl_HEADER_SYS_SELECT
AC_PROG_MKDIR_P

Makefile.am:
nobase_nodist_include_HEADERS += sys/select.h

BUILT_SOURCES += sys/select.h

# We need the following in order to create <sys/select.h> when the system
# doesn't have one that works with the given compiler.
sys/select.h: sys_select.in.h $(CXXDEFS_H) $(WARN_ON_USE_H)
	$(AM_V_at)$(MKDIR_P) sys
	$(AM_V_GEN)rm -f $@-t $@ && \
	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
	      -e 's|@''NEXT_SYS_SELECT_H''@|$(NEXT_SYS_SELECT_H)|g' \
	      -e 's|@''HAVE_SYS_SELECT_H''@|$(HAVE_SYS_SELECT_H)|g' \
	      -e 's|@''GNULIB_SELECT''@|$(GNULIB_SELECT)|g' \
	      -e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
	      -e 's|@''REPLACE_SELECT''@|$(REPLACE_SELECT)|g' \
	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
	      < $(srcdir)/sys_select.in.h; \
	} > $@-t && \
	mv $@-t $@
MOSTLYCLEANFILES += sys/select.h sys/select.h-t
MOSTLYCLEANDIRS += sys

Include:
<sys/select.h>

License:
LGPLv2+

Maintainer:
Simon Josefsson