Mercurial > gnulib
view m4/fabsl.m4 @ 40163:b89f4c441767
Avoid build errors due to wrong references between modules.
* lib/uninorm/canonical-decomposition.c: Include
"uninorm/decomposition-table.h", not "decomposition-table.h".
* lib/uninorm/decomposition.c: Likewise.
* lib/uninorm/u8-normalize.c: Include "uninorm/decompose-internal.h",
not "decompose-internal.h".
* lib/uninorm/u16-normalize.c: Likewise.
* lib/uninorm/u32-normalize.c: Likewise.
* lib/uninorm/uninorm-filter.c: Likewise.
* lib/uninorm/nfkc.c: Likewise.
* lib/uninorm/nfkd.c: Likewise.
* lib/unicase/u8-casemap.c: Include "unicase/caseprop.h", not
"caseprop.h".
* lib/unicase/u8-ct-totitle.c: Likewise.
* lib/unicase/u8-prefix-context.c: Likewise.
* lib/unicase/u8-suffix-context.c: Likewise.
* lib/unicase/u16-casemap.c: Likewise.
* lib/unicase/u16-ct-totitle.c: Likewise.
* lib/unicase/u16-prefix-context.c: Likewise.
* lib/unicase/u16-suffix-context.c: Likewise.
* lib/unicase/u32-casemap.c: Likewise.
* lib/unicase/u32-ct-totitle.c: Likewise.
* lib/unicase/u32-prefix-context.c: Likewise.
* lib/unicase/u32-suffix-context.c: Likewise.
* lib/unicase/u8-tolower.c: Include "unicase/unicasemap.h", not
"unicasemap.h".
* lib/unicase/u8-toupper.c: Likewise.
* lib/unicase/u8-ct-tolower.c: Likewise.
* lib/unicase/u8-ct-toupper.c: Likewise.
* lib/unicase/u16-tolower.c: Likewise.
* lib/unicase/u16-toupper.c: Likewise.
* lib/unicase/u16-ct-tolower.c: Likewise.
* lib/unicase/u16-ct-toupper.c: Likewise.
* lib/unicase/u32-tolower.c: Likewise.
* lib/unicase/u32-toupper.c: Likewise.
* lib/unicase/u32-ct-tolower.c: Likewise.
* lib/unicase/u32-ct-toupper.c: Likewise.
* lib/unicase/u8-ct-casefold.c: Include "unicase/unicasemap.h", not
"unicasemap.h", and "unicase/casefold.h", not "casefold.h".
* lib/unicase/u16-ct-casefold.c: Likewise.
* lib/unicase/u32-ct-casefold.c: Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 28 Jan 2019 01:20:11 +0100 |
parents | b06060465f09 |
children |
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# fabsl.m4 serial 3 dnl Copyright (C) 2011-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_FABSL], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) dnl Persuade glibc <math.h> to declare fabsl(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl Determine FABSL_LIBM. gl_MATHFUNC([fabsl], [long double], [(long double)]) if test $gl_cv_func_fabsl_no_libm = yes \ || test $gl_cv_func_fabsl_in_libm = yes; then save_LIBS="$LIBS" LIBS="$LIBS $FABSL_LIBM" gl_FUNC_FABSL_WORKS LIBS="$save_LIBS" case "$gl_cv_func_fabsl_works" in *yes) ;; *) REPLACE_FABSL=1 ;; esac else HAVE_FABSL=0 fi if test $HAVE_FABSL = 0 || test $REPLACE_FABSL = 1; then dnl Find libraries needed to link lib/fabsl.c. if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then AC_REQUIRE([gl_FUNC_FABS]) FABSL_LIBM="$FABS_LIBM" else FABSL_LIBM= fi fi AC_SUBST([FABSL_LIBM]) ]) dnl Test whether fabsl() works on a minus zero. dnl On IRIX 6.5, with gcc 4.2.4 and without -fno-builtin-fabsl, the value is a dnl minus zero rather than a positive zero. AC_DEFUN([gl_FUNC_FABSL_WORKS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether fabsl works], [gl_cv_func_fabsl_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include <float.h> #include <math.h> #include <string.h> volatile long double x; long double y; long double zero = 0.0L; int main () { x = - (LDBL_MIN * LDBL_MIN * LDBL_MIN); y = fabsl (x); return (memcmp (&y, &zero, sizeof y) != 0); } ]])], [gl_cv_func_fabsl_works=yes], [gl_cv_func_fabsl_works=no], [case "$host_os" in irix*) gl_cv_func_fabsl_works="guessing no" ;; # Guess yes on native Windows. mingw*) gl_cv_func_fabsl_works="guessing yes" ;; *) gl_cv_func_fabsl_works="guessing yes" ;; esac ]) ]) ])