379 lines
8.9 KiB
Plaintext
379 lines
8.9 KiB
Plaintext
# -*- autoconf -*-
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AT_BANNER([Semantics.])
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## -------------------------------- ##
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## Members of the AC_CHECK family. ##
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## -------------------------------- ##
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# AC_CHECK_LIB
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# ------------
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# Well, I can't imagine a system where `cos' is neither in libc, nor
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# in libm. Nor can I imagine a lib more likely to exists than libm.
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# But there are systems without libm, on which we don't want to have
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# this test fail, so exit successfully if `cos' is in libc.
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AT_CHECK_MACRO([AC_CHECK_LIB],
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[AC_TRY_LINK_FUNC(cos,
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[AC_MSG_ERROR([`cos' is in `libc'], 77)])
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AC_CHECK_LIB(m, cos,,
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[AC_MSG_ERROR([cannot find `cos' in `libm'])])
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# No kidding, using variables was broken in 2.50 :(
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ac_sin=sin
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AC_CHECK_LIB(m, $ac_sin,,
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[AC_MSG_ERROR([cannot find `\$ac_sin' (= `$ac_sin') in `libm'])])
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ac_m=m
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AC_CHECK_LIB($ac_m, acos,,
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[AC_MSG_ERROR([cannot find `acos' in `\$ac_m' (= `$ac_m')])])
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ac_asin=asin
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AC_CHECK_LIB($ac_m, $ac_asin,,
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[AC_MSG_ERROR([cannot find `\$ac_asin' (= `$ac_asin') in `\$ac_m' (= `$at_m')])])
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# But if the bug is in the caching mechanism, then be sure we
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# correctly detect failures.
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AC_CHECK_LIB(m, cossack,
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[AC_MSG_ERROR([found `cossack' in `libm'])])
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# No kidding, using variables was broken in 2.50 :(
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ac_sinner=sinner
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AC_CHECK_LIB(m, $ac_sinner,
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[AC_MSG_ERROR([found `\$ac_sinner' (= `$ac_sinner') in `libm'])])
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ac_m=m
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AC_CHECK_LIB($ac_m, acossack,
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[AC_MSG_ERROR([found `acossack' in `\$ac_m' (= `$ac_m')])])
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ac_asinner=asinner
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AC_CHECK_LIB($ac_m, $ac_asinner,
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[AC_MSG_ERROR([found `\$ac_asinner' (= `$ac_asinner') in `\$ac_m' (= `$at_m')])])
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])
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# AC_CHECK_DECLS
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# --------------
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# Check that it performs the correct actions:
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# Must define NEED_NO_DECL, but not NEED_YES_DECL.
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AT_CHECK_MACRO([AC_CHECK_DECLS],
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[[AC_CHECK_DECLS([yes, no],,,
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[int yes = 1;])]],
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[AT_CHECK_DEFINES(
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[#define HAVE_DECL_NO 0
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#define HAVE_DECL_YES 1
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])])
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# AC_CHECK_FUNCS
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# --------------
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# Check that it performs the correct actions:
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# Must define HAVE_PRINTF, but not HAVE_AUTOCONF_FTNIRP
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AT_CHECK_MACRO([AC_CHECK_FUNCS],
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[AC_CHECK_FUNCS(printf autoconf_ftnirp)],
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[AT_CHECK_DEFINES(
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[/* #undef HAVE_AUTOCONF_FTNIRP */
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#define HAVE_PRINTF 1
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])])
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# AC_REPLACE_FUNCS
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# ----------------
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# Check that it performs the correct actions: autoconf_ftnirp.c must
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# be compiled, and must define HAVE_PRINTF, but not HAVE_AUTOCONF_FTNIRP
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# FIXME: Maybe check the traces?
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AT_SETUP([AC_REPLACE_FUNCS])
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AT_DATA([config.in],
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[@LIBOBJS@
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])
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AT_CONFIGURE_AC(
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[AC_CONFIG_FILES(config.libobjs:config.in)
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AC_REPLACE_FUNCS(printf autoconf_ftnirp)])
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AT_CHECK_AUTOCONF([-W obsolete])
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AT_CHECK_AUTOHEADER
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AT_CHECK_CONFIGURE
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AT_CHECK_ENV
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AT_CHECK_DEFINES(
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[/* #undef HAVE_AUTOCONF_FTNIRP */
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#define HAVE_PRINTF 1
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])
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AT_CHECK([sed 's/ */ /g;s/^ //;s/ $//' config.libobjs], [],
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[autoconf_ftnirp.o
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])
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AT_CLEANUP([config.libobjs])
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# AC_CHECK_HEADERS
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# ----------------
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# Check that it performs the correct actions:
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# Must define HAVE_STDIO_H, but not HAVE_AUTOCONF_IO_H.
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AT_CHECK_MACRO([AC_CHECK_HEADERS],
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[AC_CHECK_HEADERS(stdio.h autoconf_io.h)],
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[AT_CHECK_DEFINES(
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[/* #undef HAVE_AUTOCONF_IO_H */
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#define HAVE_STDIO_H 1
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])])
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# AC_CHECK_MEMBERS
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# ----------------
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# Check that it performs the correct actions.
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# Must define HAVE_STRUCT_YES_S_YES, but not HAVE_STRUCT_YES_S_NO.
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AT_CHECK_MACRO([AC_CHECK_MEMBERS],
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[[AC_CHECK_MEMBERS([struct yes_s.yes, struct yes_s.no],,,
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[struct yes_s { int yes ;} ;])]],
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[AT_CHECK_DEFINES(
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[/* #undef HAVE_STRUCT_YES_S_NO */
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#define HAVE_STRUCT_YES_S_YES 1
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])])
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# AC_CHECK_SIZEOF
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# ---------------
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AT_CHECK_MACRO([AC_CHECK_SIZEOF],
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[[AC_CHECK_SIZEOF(char)
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AC_CHECK_SIZEOF(charchar,,
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[[#include <stdio.h>
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typedef char charchar[2];]])
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AC_CHECK_SIZEOF(charcharchar)
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# Exercize the code used when cross-compiling
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cross_compiling=yes
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AC_CHECK_SIZEOF(unsigned char)
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AC_CHECK_SIZEOF(ucharchar,,
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[[#include <stdio.h>
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typedef unsigned char ucharchar[2];]])
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AC_CHECK_SIZEOF(ucharcharchar)]],
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[AT_CHECK_DEFINES(
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[#define SIZEOF_CHAR 1
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#define SIZEOF_CHARCHAR 2
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#define SIZEOF_CHARCHARCHAR 0
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#define SIZEOF_UCHARCHAR 2
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#define SIZEOF_UCHARCHARCHAR 0
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#define SIZEOF_UNSIGNED_CHAR 1
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])])
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# AC_CHECK_TYPES
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# --------------
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# Check that it performs the correct actions.
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# Must define HAVE_STRUCT_YES_S, HAVE_INT, but not HAVE_STRUCT_NO_S.
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# `int' and `struct yes_s' are both checked to test both the compiler
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# builtin types, and defined types.
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AT_CHECK_MACRO([AC_CHECK_TYPES],
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[[AC_CHECK_TYPES([int, struct yes_s, struct no_s],,,
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[struct yes_s { int yes ;} ;])]],
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[AT_CHECK_DEFINES(
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[#define HAVE_INT 1
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/* #undef HAVE_STRUCT_NO_S */
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#define HAVE_STRUCT_YES_S 1
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])])
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# AC_CHECK_TYPES
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# --------------
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# Check that we properly dispatch properly to the old implementation
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# or to the new one.
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AT_SETUP([AC_CHECK_TYPES: backward compatibility])
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AT_DATA(configure.ac,
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[[AC_INIT
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define([_AC_CHECK_TYPE_NEW], [NEW])
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define([_AC_CHECK_TYPE_OLD], [OLD])
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#(cut-from-here
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AC_CHECK_TYPE(ptrdiff_t)
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AC_CHECK_TYPE(ptrdiff_t, int)
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AC_CHECK_TYPE(quad, long long)
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AC_CHECK_TYPE(table_42, [int[42]])
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# Nice machine!
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AC_CHECK_TYPE(uint8_t, uint65536_t)
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AC_CHECK_TYPE(a,b,c,d)
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#to-here)
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AC_OUTPUT
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]])
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AT_CHECK_AUTOCONF
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AT_CHECK([[sed -e '/^#(cut-from-here/,/^#to-here)/!d' -e '/^#/d' configure]],
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0,
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[NEW
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OLD
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OLD
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OLD
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OLD
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NEW
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])
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AT_CLEANUP
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# AC_CHECK_FILES
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# --------------
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# FIXME: To really test HAVE_AC_EXISTS2 and HAVE_AC_MISSING2 we need to
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# open AH_TEMPLATE to `configure.ac', which is not yet the case.
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AT_CHECK_MACRO([AC_CHECK_FILES],
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[touch at-exists1 at-exists2
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ac_exists2=at-exists2
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ac_missing2=at-missing2
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AC_CHECK_FILES(at-exists1 at-missing1 $ac_exists2 $ac_missing2)
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rm at-exists1 at-exists2],
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[AT_CHECK_DEFINES(
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[#define HAVE_AT_EXISTS1 1
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/* #undef HAVE_AT_MISSING1 */
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])])
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## ------------------------------ ##
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## AC_CHECK_PROG & AC_PATH_PROG. ##
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## ------------------------------ ##
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# AT_CHECK_PROGS_PREPARE
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# ----------------------
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# Create a sub directory `path' with 6 subdirs which all 7 contain
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# an executable `tool'. `6' contains a `better' tool.
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m4_define([AT_CHECK_PROGS_PREPARE],
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[mkdir path
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cat >path/tool <<\EOF
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#! /bin/sh
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exit 0
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EOF
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chmod +x path/tool
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for i in 1 2 3 4 5 6
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do
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mkdir path/$i
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cp path/tool path/$i
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done
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cp path/tool path/6/better])
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# -------------------------------- #
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# AC_CHECK_PROG & AC_CHECK_PROGS. #
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# -------------------------------- #
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AT_SETUP([AC_CHECK_PROG & AC_CHECK_PROGS])
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AT_CHECK_PROGS_PREPARE
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AT_DATA(configure.ac,
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[[AC_INIT
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pwd=`pwd`
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p="1${ac_path_separator}2${ac_path_separator}3${ac_path_separator}4${ac_path_separator}5${ac_path_separator}6"
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path=`echo $p | sed -e 's,\([[0-9]]\),'"$pwd"'/path/\1,g'`
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fail=false
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AC_CHECK_PROG(TOOL1, tool, found, not-found, $path)
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test "$TOOL1" = found || fail=:
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# Yes, the semantics of this macro is weird.
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AC_CHECK_PROG(TOOL2, tool,, not-found, $path)
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test "$TOOL2" = not-found || fail=:
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AC_CHECK_PROG(TOOL3, tool, tool, not-found, $path, $pwd/path/1/tool)
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test "$TOOL3" = $pwd/path/2/tool || fail=:
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AC_CHECK_PROG(TOOL4, better, better, not-found, $path, $pwd/path/1/tool)
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test "$TOOL4" = better || fail=:
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# When a tool is not found, and no value is given for not-found,
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# the variable is left empty.
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AC_CHECK_PROGS(TOOL5, missing,, $path)
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test -z "$TOOL5" || fail=:
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AC_CHECK_PROGS(TOOL6, missing tool better,, $path)
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test "$TOOL6" = tool || fail=:
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# No AC-OUTPUT, we don't need config.status.
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$fail &&
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AC_MSG_ERROR([[CHECK_PROG failed]])
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AS_EXIT(0)
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]])
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AT_CHECK_AUTOCONF
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AT_CHECK_CONFIGURE
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AT_CLEANUP(path)
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# ------------------------------ #
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# AC_PATH_PROG & AC_PATH_PROGS. #
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# ------------------------------ #
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AT_SETUP(AC_PATH_PROG & AC_PATH_PROGS)
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AT_CHECK_PROGS_PREPARE
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AT_DATA(configure.ac,
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[[AC_INIT
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pwd=`pwd`
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p="1${ac_path_separator}2${ac_path_separator}3${ac_path_separator}4${ac_path_separator}5${ac_path_separator}6"
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path=`echo $p | sed -e 's,\([[0-9]]\),'"$pwd"'/path/\1,g'`
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fail=false
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AC_PATH_PROG(TOOL1, tool, not-found, $path)
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test "$TOOL1" = $pwd/path/1/tool || fail=:
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AC_PATH_PROG(TOOL2, better, not-found, $path)
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test "$TOOL2" = $pwd/path/6/better || fail=:
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# When a tool is not found, and no value is given for not-found,
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# the variable is left empty.
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AC_PATH_PROGS(TOOL3, missing,, $path)
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test -z "$TOOL3" || fail=:
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AC_PATH_PROGS(TOOL4, missing tool better,, $path)
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test "$TOOL4" = $pwd/path/1/tool || fail=:
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# No AC-OUTPUT, we don't need config.status.
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$fail &&
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AC_MSG_ERROR([[PATH_PROG failed]])
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AS_EXIT(0)
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]])
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AT_CHECK_AUTOCONF
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AT_CHECK_CONFIGURE
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AT_CLEANUP(path)
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## -------------- ##
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## AC_PATH_XTRA. ##
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## -------------- ##
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AT_SETUP([AC_PATH_XTRA])
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_AT_CHECK_AC_MACRO([AC_PATH_XTRA])
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# Check X_DISPLAY_MISSING.
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AT_CHECK_CONFIGURE([--without-x])
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AT_CHECK_DEFINES(
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[#define X_DISPLAY_MISSING 1
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])
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AT_CLEANUP
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## ------------------------------- ##
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## Obsolete non-updatable macros. ##
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## ------------------------------- ##
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AT_CHECK_MACRO([AC_SYS_RESTARTABLE_SYSCALLS], , ,[-W no-obsolete])
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AT_CHECK_MACRO([AC_FUNC_WAIT3], , ,[-W no-obsolete])
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