Move .h file names out of the *.m4 files.

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.

1 files changed, 1 insertions, 0 deletions

diff --git a/modules/errno b/modules/errno
index 35fe9ada9c..e8c3bede0a 100644
--- a/modules/errno
+++ b/modules/errno
@@ -10,6 +10,7 @@ include_next
 
 configure.ac:
 gl_HEADER_ERRNO_H
+gl_CONDITIONAL_HEADER([errno.h])
 AC_PROG_MKDIR_P
 
 Makefile.am: