Mercurial > gnulib
view m4/expm1.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 | e2e6dc79463b |
children |
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# expm1.m4 serial 6 dnl Copyright (C) 2010-2019 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_EXPM1], [ m4_divert_text([DEFAULTS], [gl_expm1_required=plain]) AC_REQUIRE([gl_MATH_H_DEFAULTS]) dnl Persuade glibc <math.h> to declare expm1(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) EXPM1_LIBM= AC_CACHE_CHECK([whether expm1() can be used without linking with libm], [gl_cv_func_expm1_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> double (*funcptr) (double) = expm1; double x;]], [[return funcptr (x) > 0.5 || expm1 (x) > 0.5;]])], [gl_cv_func_expm1_no_libm=yes], [gl_cv_func_expm1_no_libm=no]) ]) if test $gl_cv_func_expm1_no_libm = no; then AC_CACHE_CHECK([whether expm1() can be used with libm], [gl_cv_func_expm1_in_libm], [ save_LIBS="$LIBS" LIBS="$LIBS -lm" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> double (*funcptr) (double) = expm1; double x;]], [[return funcptr (x) > 0.5 || expm1 (x) > 0.5;]])], [gl_cv_func_expm1_in_libm=yes], [gl_cv_func_expm1_in_libm=no]) LIBS="$save_LIBS" ]) if test $gl_cv_func_expm1_in_libm = yes; then EXPM1_LIBM=-lm fi fi if test $gl_cv_func_expm1_no_libm = yes \ || test $gl_cv_func_expm1_in_libm = yes; then : m4_ifdef([gl_FUNC_EXPM1_IEEE], [ if test $gl_expm1_required = ieee && test $REPLACE_EXPM1 = 0; then AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether expm1 works according to ISO C 99 with IEC 60559], [gl_cv_func_expm1_ieee], [ save_LIBS="$LIBS" LIBS="$LIBS $EXPM1_LIBM" AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> ]gl_DOUBLE_MINUS_ZERO_CODE[ ]gl_DOUBLE_SIGNBIT_CODE[ static double dummy (double x) { return 0; } int main (int argc, char *argv[]) { double (* volatile my_expm1) (double) = argc ? expm1 : dummy; double y = my_expm1 (minus_zerod); if (!(y == 0.0) || (signbitd (minus_zerod) && !signbitd (y))) return 1; return 0; } ]])], [gl_cv_func_expm1_ieee=yes], [gl_cv_func_expm1_ieee=no], [case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_expm1_ieee="guessing yes" ;; # Guess yes on native Windows. mingw*) gl_cv_func_expm1_ieee="guessing yes" ;; # If we don't know, assume the worst. *) gl_cv_func_expm1_ieee="guessing no" ;; esac ]) LIBS="$save_LIBS" ]) case "$gl_cv_func_expm1_ieee" in *yes) ;; *) REPLACE_EXPM1=1 ;; esac fi ]) else HAVE_EXPM1=0 fi if test $HAVE_EXPM1 = 0 || test $REPLACE_EXPM1 = 1; then dnl Find libraries needed to link lib/expm1.c. AC_REQUIRE([gl_FUNC_ISNAND]) AC_REQUIRE([gl_FUNC_EXP]) AC_REQUIRE([gl_FUNC_ROUND]) AC_REQUIRE([gl_FUNC_LDEXP]) EXPM1_LIBM= dnl Append $ISNAND_LIBM to EXPM1_LIBM, avoiding gratuitous duplicates. case " $EXPM1_LIBM " in *" $ISNAND_LIBM "*) ;; *) EXPM1_LIBM="$EXPM1_LIBM $ISNAND_LIBM" ;; esac dnl Append $EXP_LIBM to EXPM1_LIBM, avoiding gratuitous duplicates. case " $EXPM1_LIBM " in *" $EXP_LIBM "*) ;; *) EXPM1_LIBM="$EXPM1_LIBM $EXP_LIBM" ;; esac dnl Append $ROUND_LIBM to EXPM1_LIBM, avoiding gratuitous duplicates. case " $EXPM1_LIBM " in *" $ROUND_LIBM "*) ;; *) EXPM1_LIBM="$EXPM1_LIBM $ROUND_LIBM" ;; esac dnl Append $LDEXP_LIBM to EXPM1_LIBM, avoiding gratuitous duplicates. case " $EXPM1_LIBM " in *" $LDEXP_LIBM "*) ;; *) EXPM1_LIBM="$EXPM1_LIBM $LDEXP_LIBM" ;; esac fi AC_SUBST([EXPM1_LIBM]) ])