* doc/autoconf.texi: Free Franc,ois Pinard from iftex and ifinfo,
use @,c.
Don't use `@code{m4}' when you mean M4, just as you shall not say
`@code{cc}' when you refer to the C language.
* acgeneral.m4 (build_alias): Set to host_alias if --build is not
given but --host is, and enable cross-compile auto-detection. If
both are, and are different, enable cross compilation.
(AC_CANONICAL_HOST): Adjust help message.
(cross_compiling): Enclose in quotes when testing.
* aclang.m4 (_AC_LANG_COMPILER_WORKS): If cross_compiling is
maybe, set it to yes or no depending on the result of the
execution test.
* doc/autoconf.texi: Document the change.
* doc/install.texi: Likewise.
$AUTOMAKE and $ACLOCAL.
Pass --verbose to the tools.
Avoid using plenty of variables, just append to existing
variables.
* doc/autoconf.texi: List options in the order --help, --version,
--verbose, --debug, and then specific options.
(Specifying Names): When describing the system triplets, use the
same names as the shell variables.
(System Type Variables): Delete, merge its content into...
(Canonicalizing): here.
Clarify the difference between the `foo_target' and `foo'
variables.
AC_CONFIG_COMMANDS, AC_CONFIG_FILES): Use a shell variable instead
of an m4 variable to store what must be done, so that sh
conditionals are honored.
(_AC_OUTPUT_LINKS, _AC_OUTPUT_HEADERS,
_AC_OUTPUT_COMMANDS, _AC_OUTPUT_FILES): Adjust.
* tests/semantics.m4: Test the four AC_CONFIG sisters.
* doc/autoconf.texi (Configuration Actions): Promote the use of
literals, show it works properly with sh conditionals.
* acgeneral.m4 (AC_OUTPUT_MAKE_DEFS) <confdef2opt.sed>: Reset the
t flag between each cycle.
* doc/autoconf.texi (Limitations of Usual Tools): Some about the t
flag in sed.
* acgeneral.m4 (_AC_COMPUTE_INT_COMPILE): Do not put two shell
variable assignments in one shell command.
* doc/autoconf.texi (Shell Substitutions): Document.
cannot produce object code.
* aclang.m4 (AC_PROG_F77): Remove f2c from the search list.
* doc/autoconf.texi: Excise mentions of f2c in AC_PROG_F77 docs.
* doc/autoconf.texi (Obsolete Constructs): Move right after
`Recreation a Configuration.
(Invoking autoupdate): Be a subsection of
`Obsolete Constructs'.
(Upgrading): Demote from chapter to section.
Be a section of `Obsolete Constructs'.
Rename as `Autoconf 1'.
Use this technology to compute `sizeof' even when cross-compiling.
Ideas and initial suggestion by Kaveh Ghazi.
Binary search by Bruno Haible.
* aclang.m4 (AC_LANG_BOOL_COMPILE_TRY,
AC_LANG_BOOL_COMPILE_TRY(C), AC_LANG_BOOL_COMPILE_TRY(C++),
AC_LANG_INT_SAVE, AC_LANG_INT_SAVE(C), AC_LANG_INT_SAVE(C++)): New
macros.
* acgeneral.m4 (_AC_COMPUTE_INT_COMPILE, _AC_COMPUTE_INT_RUN,
_AC_COMPUTE_INT): New.
(AC_CHECK_SIZEOF): Use them.
Check whether the type exists beforehand.
* tests/semantics.m4 (AC_CHECK_SIZEOF): Strengthen.
classes with `case'. Use `expr' instead.
Suggested by Paul Eggert.
* doc/autoconf.texi (Limitations of Builtins): Explain expr, the
`x' trick, and negated character classes.
* acgeneral.m4 (AC_CHECK_TOOLS): New.
* aclang.m4 (AC_PROG_CXX, AC_PROG_CC, AC_PROG_F77): Use new
AC_CHECK_TOOLS macro instead of AC_CHECK_PROGS so that a cross
compiler is found by default with --host.
* doc/autoconf.texi (Generic Programs, Manual Configuration):
Describe new AC_CHECK_TOOLS macro. Fix unclear working about
AC_CHECK_PROGS.
* tests/Makefile.am (FILTER_MACROS): Adjust.
* acspecific.m4 (AC_XENIX_DIR, AC_DYNIX_SEQ, AC_IRIX_SUN,
AC_SCO_INTL): Wake up a few zombies.
* doc/autoconf.texi: Adjust.
* tests/aclocal.m4 (AC_ENV_SAVE): Likewise.
(Special Shell Variables): Adjust.
(Shellology): New section. Introduce bash and zsh.
(Special Shell Variables): Some data on NULLCMD.
(Quotation Thumb Rule): Rename as
(Quotation Rule of Thumb): this.
* acgeneral.m4 (AC_SHELL_UNSET): Remove.
(AC_SHELL_UNSETENV): Rename as...
(AC_SHELL_UNSET): this.
(_AC_INIT_PREPARE_ENVIRONMENT): Prepare bash and zsh.
Adjust to AC_SHELL_UNSET.
Now work with other languages than C and C++.
* acspecific.m4 (AC_EXEEXT, AC_OBJEXT): Use
AC_COMPILE_IFELSE/AC_LINK_IFELSE and AC_LANG_PROGRAM instead of
ad hoc code.
Use `$ac_ext' instead of listing `.c', `.C' etc.
Use AC_CACHE_CHECK.
* doc/autoconf.texi (System Services): Adjust.
for special environments.
* acspecific.m4 (AC_CYGWIN, AC_EMXOS2, AC_MINGW32): AU defined to
nothing. Replace them by...
(_AC_CYGWIN, _AC_EMXOS2, _AC_MINGW32): these, which are
automatically called by...
(AC_EXEEXT): this.
* doc/autoconf.texi (System Services, Obsolete Macros): Adjust.
into...
(Limitations of Builtins): this new node.
Document limitations of `exit', `export' and `case'.
Welcome the documentation of `test' from...
(Limitations of Usual Tools): here.
`--cache-file=config.cache'.
* acgeneral.m4 (_AC_INIT_PARSE_ARGS): Let `configure' support
`--config-cache' and `-C'.
Report them in `--help'.
Fix the display of missing argument.
(_AC_OUTPUT_SUBDIRS): Adjust.
* doc/install.texi (Invoking configure): Rename the node as
(Running configure scripts): this, the name of the chapter.
(Operation Controls): Rename as...
(Invoking configure): this.
Document the new options.
* doc/autoconf.texi (direntry): Huh? What is this `aclocal' doing
here? Point to `Invoking configure'.
(Cache Files): No need to document the disabling of the cache.
Meyering's `chown.m4' serial 4.
(AC_FUNC_GETGROUPS): New macro, based on Jim Meyering's
`getgroups.m4' serial 3.
(AC_FUNC_MEMCMP): Updated, based on Jim Meyering's `memcmp.m4'
serial 3.
(AC_FUNC_MALLOC): New macro, based on Jim Meyering's
`malloc.m4' serial 3.
(AC_FUNC_MMAP): Include `stdlib.h' when `STDC_HEADERS'.
* acfunctions: Sort.
Add `chown' and `malloc', point `getgroups' to `AC_FUNC_GETGROUPS'
instead of `AC_TYPE_GETGROUPS'.
* doc/autoconf.texi (Particular Functions): Adjust.
(AC_INIT): Dispatch your arguments either to _AC_INIT_PACKAGE or
to AC_CONFIG_SRCDIR.
(AU::AC_INIT): New.
* configure.in: Adjust.
Use `#', not `dnl'.
* doc/autoconf.texi (configure.in Layout): Document the new form
of AC_INIT.
Document AC_CONFIG_SRCDIR.
(Obsolete Macros): Document the old one.
Rename as:
(_AC_PROG_CC_GNU, _AC_PROG_CXX_GNU, _AC_PROG_F77_GNU): these.
Compute the value of GCC, GXX and G77 here.
Set to `no' (instead of empty) if not the GNU compiler.
(AC_PROG_CC, AC_PROG_CXX, AC_PROG_F77): Adjust.
* doc/autoconf.texi: Adjust.
Using --host enables cross-compilation.
* acgeneral.m4 (_AC_INIT_PARSE_ARGS): `--host' enables cross
compilation.
(AC_CANONICAL_BUILD): The help string should explicitly mention
cross compilation.
* aclang.m4 (AC_LANG(C), AC_LANG(C++), AC_LANG(Fortran 77)): Don't
set `cross_compiling'.
(AC_PROG_CC, AC_PROG_CXX, AC_PROG_F77): Run your `WORK' partner
only if not cross-compiling.
(AC_PROG_CC_WORKS, AC_PROG_CXX_WORKS, AC_PROG_F77_WORKS):
If does not work, don't assume an implicit cross-compilation:
fail.
* doc/autoconf.texi: Adjust.
(AC_CHECK_MEMBER, AC_CHECK_MEMBERS): Fix to work properly on
`struct f.g.h'.
* acspecific.m4 (AC_FUNC_GETLOADAVG): Use AC_CHECK_HEADERS and
AC_CHECK_MEMBERS instead of performing their task by hand.
