203 lines
6.1 KiB
Plaintext
203 lines
6.1 KiB
Plaintext
# getpayload.m4
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# serial 2
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dnl Copyright 2024 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl This file is offered as-is, without any warranty.
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AC_DEFUN([gl_FUNC_GETPAYLOADF],
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[
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AC_REQUIRE([gl_MATH_H_DEFAULTS])
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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gl_MATHFUNC([getpayloadf], [float], [(float const *)])
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if test $gl_cv_func_getpayloadf_no_libm != yes \
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&& test $gl_cv_func_getpayloadf_in_libm != yes; then
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HAVE_GETPAYLOADF=0
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else
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dnl glibc versions < 2.32 return a wrong value,
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dnl see <https://sourceware.org/bugzilla/show_bug.cgi?id=26073>.
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AC_CACHE_CHECK([whether getpayloadf works],
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[gl_cv_func_getpayloadf_works],
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[
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saved_LIBS="$LIBS"
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if test $gl_cv_func_getpayloadf_no_libm != yes; then
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LIBS="$LIBS -lm"
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fi
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <math.h>
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]],
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[[float x = 2.718281828459045f;
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return getpayloadf (&x) != -1.0f;
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]])
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],
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[gl_cv_func_getpayloadf_works=yes],
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[gl_cv_func_getpayloadf_works=no],
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[case "$host_os" in
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# Guess no on glibc versions < 2.32.
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*-gnu* | gnu*)
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AC_EGREP_CPP([Unlucky],
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[
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#include <features.h>
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#ifdef __GNU_LIBRARY__
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#if (__GLIBC__ == 2 && __GLIBC_MINOR__ < 32)
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Unlucky GNU user
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#endif
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#endif
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],
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[gl_cv_func_getpayloadf_works="guessing no"],
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[gl_cv_func_getpayloadf_works="guessing yes"])
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;;
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# Guess yes otherwise.
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*) gl_cv_func_getpayloadf_works="guessing yes" ;;
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esac
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])
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LIBS="$saved_LIBS"
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])
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case "$gl_cv_func_getpayloadf_works" in
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*yes) ;;
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*) REPLACE_GETPAYLOADF=1 ;;
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esac
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fi
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if test $HAVE_GETPAYLOADF = 0 || test $REPLACE_GETPAYLOADF = 1; then
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GETPAYLOADF_LIBM='$(ISNANF_LIBM)'
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fi
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AC_SUBST([GETPAYLOADF_LIBM])
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])
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AC_DEFUN_ONCE([gl_FUNC_GETPAYLOAD],
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[
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AC_REQUIRE([gl_MATH_H_DEFAULTS])
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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gl_MATHFUNC([getpayload], [double], [(double const *)])
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if test $gl_cv_func_getpayload_no_libm != yes \
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&& test $gl_cv_func_getpayload_in_libm != yes; then
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HAVE_GETPAYLOAD=0
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else
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dnl glibc versions < 2.32 return a wrong value,
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dnl see <https://sourceware.org/bugzilla/show_bug.cgi?id=26073>.
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AC_CACHE_CHECK([whether getpayload works],
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[gl_cv_func_getpayload_works],
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[
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saved_LIBS="$LIBS"
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if test $gl_cv_func_getpayload_no_libm != yes; then
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LIBS="$LIBS -lm"
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fi
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <math.h>
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]],
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[[double x = 2.718281828459045;
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return getpayload (&x) != -1.0;
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]])
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],
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[gl_cv_func_getpayload_works=yes],
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[gl_cv_func_getpayload_works=no],
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[case "$host_os" in
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# Guess no on glibc versions < 2.32.
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*-gnu* | gnu*)
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AC_EGREP_CPP([Unlucky],
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[
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#include <features.h>
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#ifdef __GNU_LIBRARY__
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#if (__GLIBC__ == 2 && __GLIBC_MINOR__ < 32)
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Unlucky GNU user
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#endif
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#endif
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],
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[gl_cv_func_getpayload_works="guessing no"],
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[gl_cv_func_getpayload_works="guessing yes"])
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;;
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# Guess yes otherwise.
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*) gl_cv_func_getpayload_works="guessing yes" ;;
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esac
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])
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LIBS="$saved_LIBS"
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])
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case "$gl_cv_func_getpayload_works" in
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*yes) ;;
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*) REPLACE_GETPAYLOAD=1 ;;
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esac
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fi
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if test $HAVE_GETPAYLOAD = 0 || test $REPLACE_GETPAYLOAD = 1; then
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GETPAYLOAD_LIBM='$(ISNAND_LIBM)'
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fi
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AC_SUBST([GETPAYLOAD_LIBM])
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])
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AC_DEFUN([gl_FUNC_GETPAYLOADL],
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[
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AC_REQUIRE([gl_MATH_H_DEFAULTS])
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
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gl_MATHFUNC([getpayloadl], [long double], [(long double const *)])
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if test $gl_cv_func_getpayloadl_no_libm != yes \
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&& test $gl_cv_func_getpayloadl_in_libm != yes; then
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HAVE_GETPAYLOADL=0
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else
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dnl glibc versions < 2.32 return a wrong value,
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dnl see <https://sourceware.org/bugzilla/show_bug.cgi?id=26073>.
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AC_CACHE_CHECK([whether getpayloadl works],
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[gl_cv_func_getpayloadl_works],
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[
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saved_LIBS="$LIBS"
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if test $gl_cv_func_getpayloadl_no_libm != yes; then
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LIBS="$LIBS -lm"
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fi
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <math.h>
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]],
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[[long double x = 2.718281828459045L;
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return getpayloadl (&x) != -1.0L;
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]])
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],
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[gl_cv_func_getpayloadl_works=yes],
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[gl_cv_func_getpayloadl_works=no],
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[case "$host_os" in
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# Guess no on glibc versions < 2.32.
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*-gnu* | gnu*)
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AC_EGREP_CPP([Unlucky],
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[
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#include <features.h>
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#ifdef __GNU_LIBRARY__
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#if (__GLIBC__ == 2 && __GLIBC_MINOR__ < 32)
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Unlucky GNU user
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#endif
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#endif
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],
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[gl_cv_func_getpayloadl_works="guessing no"],
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[gl_cv_func_getpayloadl_works="guessing yes"])
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;;
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# Guess yes otherwise.
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*) gl_cv_func_getpayloadl_works="guessing yes" ;;
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esac
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])
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LIBS="$saved_LIBS"
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])
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case "$gl_cv_func_getpayloadl_works" in
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*yes) ;;
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*) REPLACE_GETPAYLOADL=1 ;;
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esac
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fi
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if test $HAVE_GETPAYLOADL = 0 || test $REPLACE_GETPAYLOADL = 1; then
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dnl Find libraries needed to link lib/getpayloadl.c.
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if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then
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AC_REQUIRE([gl_FUNC_GETPAYLOAD])
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GETPAYLOADL_LIBM="$GETPAYLOAD_LIBM"
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else
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GETPAYLOADL_LIBM='$(ISNANL_LIBM)'
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fi
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dnl Prerequisite of lib/getpayloadl.c.
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gl_LONG_DOUBLE_EXPONENT_LOCATION
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fi
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AC_SUBST([GETPAYLOADL_LIBM])
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])
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