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Simplify header generation by using Makefile variables
defined by a new gen-header module.
* modules/gen-header: New module.
* modules/alloca-opt, modules/argz, modules/arpa_inet:
* modules/assert-h, modules/byteswap:
* modules/ctype, modules/dirent, modules/dynarray, modules/errno:
* modules/execinfo, modules/fcntl-h, modules/float:
* modules/fnmatch-h, modules/getopt-posix, modules/glob-h:
* modules/iconv-h, modules/ieee754-h, modules/inttypes-incomplete:
* modules/langinfo, modules/libtextstyle-optional, modules/limits-h:
* modules/locale, modules/malloc-h, modules/math, modules/monetary:
* modules/net_if, modules/netdb, modules/netinet_in:
* modules/openmp-init, modules/poll-h:
* modules/pthread-h, modules/pty, modules/sched:
* modules/scratch_buffer, modules/search, modules/selinux-h:
* modules/signal-h, modules/sigsegv:
* modules/spawn, modules/stdalign, modules/stdarg, modules/stdbool:
* modules/stddef, modules/stdint, modules/stdio, modules/stdlib:
* modules/stdnoreturn, modules/string, modules/strings:
* modules/sys_file, modules/sys_ioctl, modules/sys_random:
* modules/sys_resource, modules/sys_select, modules/sys_socket:
* modules/sys_stat, modules/sys_time, modules/sys_times:
* modules/sys_types, modules/sys_uio, modules/sys_utsname:
* modules/sys_wait, modules/sysexits, modules/termios:
* modules/threads-h, modules/time, modules/uchar:
* modules/unicase/base, modules/unicase/special-casing:
* modules/uniconv/base, modules/unictype/base, modules/unigbrk/base:
* modules/unilbrk/base, modules/uniname/base, modules/uninorm/base:
* modules/unistd, modules/unistdio/base, modules/unistr/base:
* modules/unitypes, modules/uniwbrk/base, modules/uniwidth/base:
* modules/utime-h, modules/wchar, modules/wctype-h:
Depend on gen-header, and use its macros to simplify
header generation.
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* modules/alloca-opt, modules/argz, modules/arpa_inet:
* modules/assert-h, modules/byteswap, modules/configmake:
* modules/ctype, modules/dirent, modules/dynarray, modules/errno:
* modules/execinfo, modules/fcntl-h, modules/float:
* modules/fnmatch-h, modules/getopt-posix, modules/glob-h:
* modules/iconv-h, modules/ieee754-h, modules/inttypes-incomplete:
* modules/langinfo, modules/libtextstyle-optional:
* modules/limits-h, modules/langinfo, modules/libgmp, modules/limits-h:
* modules/locale, modules/malloc-h, modules/math, modules/monetary:
* modules/net_if, modules/netdb, modules/netinet_in:
* modules/openmp-init, modules/poll-h, modules/posix-shell:
* modules/posix_spawnp-tests, modules/pthread-h, modules/pty:
* modules/sched, modules/scratch_buffer, modules/search:
* modules/selinux-h, modules/signal-h, modules/sigsegv:
* modules/snippet/link-warning, modules/spawn, modules/stdalign:
* modules/stdarg, modules/stdbool, modules/stddef, modules/stdint:
* modules/stdio, modules/stdlib, modules/stdnoreturn:
* modules/string, modules/strings, modules/sys_file:
* modules/sys_ioctl, modules/sys_random, modules/sys_resource:
* modules/sys_select, modules/sys_socket, modules/sys_stat:
* modules/sys_time, modules/sys_times, modules/sys_types:
* modules/sys_uio, modules/sys_utsname, modules/sys_wait:
* modules/sysexits, modules/termios, modules/threads-h:
* modules/time, modules/uchar, modules/unicase/base:
* modules/unicase/special-casing, modules/uniconv/base:
* modules/unictype/base, modules/unigbrk/base, modules/unilbrk/base:
* modules/uniname/base, modules/uninorm/base, modules/unistd:
* modules/unistdio/base, modules/unistr/base, modules/unitypes:
* modules/uniwbrk/base, modules/uniwidth/base, modules/utime-h:
* modules/wchar, modules/wctype-h:
Don’t bother to do a ‘rm -f $@-t $@’ at the start of recipes that
create .h and similar files. This is a revenant of a style in
which the files were created read-only. Also, consistently use
use plain ‘mv $@-t $@’ afterwards, instead of usually using
‘mv -f’ but sometimes plain ‘mv’.
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This is especially needed when building Emacs, as it uses
‘AM_V_GEN=@$(info GEN $@)', which means the GEN line is output by
GNU make just before the recipe runs, regardless of where AM_V_GEN
appears in the recipe. And it’s also good practice even if the
default Automake ‘AM_V_GEN=@echo GEN $@;’ is used, as it’s better
to output the GEN line consistently at the start of every recipe,
even if this precedes a preparatory command that almost always
works silently.
* modules/arpa_inet, modules/dynarray, modules/net_if:
* modules/netinet_in, modules/scratch_buffer, modules/selinux-h:
* modules/sys_file, modules/sys_ioctl, modules/sys_random:
* modules/sys_resource, modules/sys_select, modules/sys_socket:
* modules/sys_stat, modules/sys_time, modules/sys_times:
* modules/sys_types, modules/sys_uio, modules/sys_utsname:
* modules/sys_wait, modules/unicase/special-casing, top/maint.mk:
Use AM_V_GEN only at the start of each recipe.
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This is useful because Autoconf macros defined in *.m4 files can be
AC_REQUIREd. In the configure file, they are then expanded before
gl_INIT, i.e. at a place where it is not known whether they are required
for the lib/ or for the tests/ directory (or both).
* m4/gnulib-common.m4 (gl_CONDITIONAL_HEADER): New macro.
* m4/alloca.m4 (gl_FUNC_ALLOCA): Set GL_GENERATE_ALLOCA_H instead of
ALLOCA_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/alloca-opt (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/argz.m4 (gl_FUNC_ARGZ): Set GL_GENERATE_ARGZ_H instead of ARGZ_H.
Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/argz (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/assert_h.m4 (gl_ASSERT_H): Set GL_GENERATE_ASSERT_H instead of
ASSERT_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/assert-h (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/byteswap.m4 (gl_BYTESWAP): Set GL_GENERATE_BYTESWAP_H instead of
BYTESWAP_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/byteswap (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/errno_h.m4 (gl_HEADER_ERRNO_H): Set GL_GENERATE_ERRNO_H instead of
ERRNO_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
(gl_REPLACE_ERRNO_VALUE): Update.
* m4/perror.m4 (gl_FUNC_PERROR): Update.
* m4/strerror.m4 (gl_FUNC_STRERROR): Update.
* m4/strerror_r.m4 (gl_FUNC_STRERROR_R, gl_FUNC_STRERROR_R_WORKS):
Update.
* modules/errno (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/execinfo.m4 (gl_EXECINFO_H): Set GL_GENERATE_EXECINFO_H instead of
EXECINFO_H. Drop AC_SUBST and AM_CONDITIONAL invocations. Drop AC_LIBOBJ
invocation.
* modules/execinfo (configure.ac): Invoke gl_CONDITIONAL_HEADER and
AC_LIBOBJ.
* m4/float_h.m4 (gl_FLOAT_H): Set GL_GENERATE_FLOAT_H instead of
FLOAT_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/float (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/fnmatch_h.m4 (gl_FNMATCH_H, gl_REPLACE_FNMATCH_H): Set
GL_GENERATE_FNMATCH_H instead of FNMATCH_H. Drop AC_SUBST and
AM_CONDITIONAL invocations.
* modules/fnmatch-h (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* modules/fnmatch (configure.ac): Likewise.
* m4/getopt.m4 (gl_FUNC_GETOPT_POSIX, gl_GETOPT_SUBSTITUTE_HEADER): Set
GL_GENERATE_GETOPT_H instead of GETOPT_H. Set GL_GENERATE_GETOPT_CDEFS_H
instead of GETOPT_CDEFS_H. Drop AC_SUBST invocations.
* modules/getopt-posix (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/glob_h.m4 (gl_GLOB_H, gl_REPLACE_GLOB_H): Set GL_GENERATE_GLOB_H
instead of GLOB_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/glob-h (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* modules/glob (configure.ac): Likewise.
* m4/iconv_h.m4 (gl_ICONV_H_DEFAULTS, gl_REPLACE_ICONV_H): Set
GL_GENERATE_ICONV_H instead of ICONV_H. Drop AC_SUBST and AM_CONDITIONAL
invocations.
(gl_ICONV_H): Update.
* modules/iconv-h (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* modules/iconv_open (configure.ac): Likewise.
* m4/ieee754-h.m4 (gl_IEEE754_H): Set GL_GENERATE_IEEE754_H instead of
IEEE754_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/ieee754-h (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/libgmp.m4 (gl_LIBGMP): Set GL_GENERATE_GMP_H instead of GMP_H. Drop
AC_SUBST invocation.
* modules/libgmp (configure.ac): Invoke gl_CONDITIONAL_HEADER.
(Makefile.am): Use GL_GENERATE_GMP_H.
* m4/libtextstyle-optional.m4 (gl_LIBTEXTSTYLE_OPTIONAL): Set
GL_GENERATE_TEXTSTYLE_H instead of TEXTSTYLE_H. Drop AC_SUBST and
AM_CONDITIONAL invocations.
* modules/libtextstyle-optional (configure.ac): Invoke
gl_CONDITIONAL_HEADER.
* m4/limits-h.m4 (gl_LIMITS_H, gl_REPLACE_LIMITS_H): Set
GL_GENERATE_LIMITS_H instead of LIMITS_H. Drop AC_SUBST and
AM_CONDITIONAL invocations.
* modules/limits-h (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/monetary_h.m4 (gl_MONETARY_H): Set GL_GENERATE_MONETARY_H instead
of MONETARY_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/monetary (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/net_if_h.m4 (gl_HEADER_NET_IF): Set GL_GENERATE_NET_IF_H instead of
NET_IF_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/net_if (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/netinet_in_h.m4 (gl_HEADER_NETINET_IN): Set
GL_GENERATE_NETINET_IN_H instead of NETINET_IN_H. Drop AC_SUBST and
AM_CONDITIONAL invocations.
* modules/netinet_in (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/selinux-context-h.m4 (gl_HEADERS_SELINUX_CONTEXT_H): Set
GL_GENERATE_SELINUX_CONTEXT_H instead of SELINUX_CONTEXT_H. Drop
AC_SUBST and AM_CONDITIONAL invocations.
* m4/selinux-label-h.m4 (gl_HEADERS_SELINUX_LABEL_H): Set
GL_GENERATE_SELINUX_LABEL_H instead of SELINUX_LABEL_H. Drop AC_SUBST
and AM_CONDITIONAL invocations.
* modules/selinux-h (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/stdalign.m4 (gl_STDALIGN_H): Set GL_GENERATE_STDALIGN_H instead of
STDALIGN_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/stdalign (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/stdarg.m4 (gl_STDARG_H): Set GL_GENERATE_STDARG_H instead of
STDARG_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/stdarg (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/stdbool.m4 (gl_STDBOOL_H): Renamed from AM_STDBOOL_H. Set
GL_GENERATE_STDBOOL_H instead of STDBOOL_H. Drop AC_SUBST and
AM_CONDITIONAL invocations.
* m4/parse-datetime.m4 (gl_PARSE_DATETIME): Don't require AM_STDBOOL_H.
* modules/stdbool (configure.ac): Invoke gl_STDBOOL_H instead of
AM_STDBOOL_H. Invoke gl_CONDITIONAL_HEADER.
* m4/stddef_h.m4 (gl_STDDEF_H): Set GL_GENERATE_STDDEF_H instead of
STDDEF_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/stddef (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/stdint.m4 (gl_STDINT_H): Set GL_GENERATE_STDINT_H instead of
STDINT_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* m4/inttypes.m4 (gl_INTTYPES_PRI_SCN): Update.
* modules/stdint (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/stdnoreturn.m4 (gl_STDNORETURN_H): Set GL_GENERATE_STDNORETURN_H
instead of STDNORETURN_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/stdnoreturn (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* m4/sys_socket_h.m4 (gl_SYS_SOCKET_H): Set GL_GENERATE_SYS_SOCKET_H
instead of SYS_SOCKET_H.
* m4/sysexits.m4 (gl_SYSEXITS): Set GL_GENERATE_SYSEXITS_H instead of
SYSEXITS_H. Drop AC_SUBST and AM_CONDITIONAL invocations.
* modules/sysexits (configure.ac): Invoke gl_CONDITIONAL_HEADER.
* modules/sigsegv (configure.ac): Set GL_GENERATE_SIGSEGV_H instead of
SIGSEGV_H. Drop AC_SUBST and AM_CONDITIONAL invocations. Invoke
gl_CONDITIONAL_HEADER.
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This is necessary for executing "make" in a VPATH build of a package
that uses prefix-gnulib-mk and a module such as alloca-opt.
* modules/alloca-opt (Makefile.am): Before generating the .h-t file,
ensure that the directory in which we want to create it exists.
(configure.ac): Invoke AC_PROG_MKDIR_P.
* modules/argz: Likewise.
* modules/arpa_inet: Likewise.
* modules/assert-h: Likewise.
* modules/byteswap: Likewise.
* modules/configmake: Likewise.
* modules/ctype: Likewise.
* modules/dirent: Likewise.
* modules/dynarray: Likewise.
* modules/errno: Likewise.
* modules/execinfo: Likewise.
* modules/fcntl-h: Likewise.
* modules/float: Likewise.
* modules/fnmatch-h: Likewise.
* modules/getopt-posix: Likewise.
* modules/glob-h: Likewise.
* modules/iconv-h: Likewise.
* modules/ieee754-h: Likewise.
* modules/inttypes-incomplete: Likewise.
* modules/langinfo: Likewise.
* modules/libgmp: Likewise.
* modules/libtextstyle-optional: Likewise.
* modules/limits-h: Likewise.
* modules/locale: Likewise.
* modules/malloc-h: Likewise.
* modules/math: Likewise.
* modules/monetary: Likewise.
* modules/net_if: Likewise.
* modules/netdb: Likewise.
* modules/netinet_in: Likewise.
* modules/openmp-init: Likewise.
* modules/poll-h: Likewise.
* modules/posix-shell: Likewise.
* modules/pthread-h: Likewise.
* modules/pty: Likewise.
* modules/sched: Likewise.
* modules/scratch_buffer: Likewise.
* modules/search: Likewise.
* modules/selinux-h: Likewise.
* modules/signal-h: Likewise.
* modules/sigsegv: Likewise.
* modules/snippet/link-warning: Likewise.
* modules/spawn: Likewise.
* modules/stdalign: Likewise.
* modules/stdarg: Likewise.
* modules/stdbool: Likewise.
* modules/stddef: Likewise.
* modules/stdint: Likewise.
* modules/stdio: Likewise.
* modules/stdlib: Likewise.
* modules/stdnoreturn: Likewise.
* modules/string: Likewise.
* modules/strings: Likewise.
* modules/sys_file: Likewise.
* modules/sys_ioctl: Likewise.
* modules/sys_random: Likewise.
* modules/sys_resource: Likewise.
* modules/sys_select: Likewise.
* modules/sys_socket: Likewise.
* modules/sys_stat: Likewise.
* modules/sys_time: Likewise.
* modules/sys_times: Likewise.
* modules/sys_types: Likewise.
* modules/sys_uio: Likewise.
* modules/sys_utsname: Likewise.
* modules/sys_wait: Likewise.
* modules/sysexits: Likewise.
* modules/termios: Likewise.
* modules/threads-h: Likewise.
* modules/time: Likewise.
* modules/uchar: Likewise.
* modules/unicase/base: Likewise.
* modules/unicase/special-casing: Likewise.
* modules/uniconv/base: Likewise.
* modules/unictype/base: Likewise.
* modules/unigbrk/base: Likewise.
* modules/unilbrk/base: Likewise.
* modules/uniname/base: Likewise.
* modules/uninorm/base: Likewise.
* modules/unistd: Likewise.
* modules/unistdio/base: Likewise.
* modules/unistr/base: Likewise.
* modules/unitypes: Likewise.
* modules/uniwbrk/base: Likewise.
* modules/uniwidth/base: Likewise.
* modules/utime-h: Likewise.
* modules/wchar: Likewise.
* modules/wctype-h: Likewise.
* gnulib-tool (func_emit_lib_Makefile_am): When producing output for
GNU make, eliminate %reldir% tokens.
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OpenBSD's <net/if.h> is not self-contained; this should compile:
| #define _POSIX_C_SOURCE 200809L
| #include <net/if.h>
| struct if_nameindex i;
but fails with:
In file included from foo.c:2:
/usr/include/net/if.h:112: error: expected specifier-qualifier-list before 'u_int'
...
/usr/include/net/if.h:674: error: field 'dstaddr' has incomplete type
In file included from /usr/include/net/if.h:691,
from foo.c:2:
/usr/include/net/if_arp.h:79: error: field 'arp_pa' has incomplete type
/usr/include/net/if_arp.h:80: error: field 'arp_ha' has incomplete type
*** Error code 1
We already had a test program for systems with the if_* functions
(including OpenBSD); but in adding this module, I had to enhance
that test to also work on platforms like mingw where we are now
providing a new header.
* modules/net_if: New module, borrowing ideas from netinet_in.
* m4/net_if_h.m4: New file.
* lib/net_if.in.h: Likewise.
* doc/posix-headers/net_if.texi (net/if.h): Document it.
* MODULES.html.sh (lacking POSIX:2008): Likewise.
* tests/test-net_if.c: Make function checks conditional.
Reported by Jasper Lievisse Adriaanse <jasper@humppa.nl>.
Signed-off-by: Eric Blake <eblake@redhat.com>
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