543 lines
18 KiB
Plaintext
543 lines
18 KiB
Plaintext
dnl
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dnl This file contains macros for testing linkage.
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dnl
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dnl
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dnl Check to see if the (math function) argument passed is
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dnl declared when using the c++ compiler
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dnl ASSUMES argument is a math function with ONE parameter
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dnl
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dnl GLIBCXX_CHECK_MATH_DECL_1
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AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_1], [
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AC_MSG_CHECKING([for $1 declaration])
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if test x${glibcxx_cv_func_$1_use+set} != xset; then
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AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <math.h>
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#ifdef HAVE_IEEEFP_H
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#include <ieeefp.h>
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#endif
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],
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[ $1(0);],
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[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
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AC_LANG_RESTORE
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])
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fi
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AC_MSG_RESULT($glibcxx_cv_func_$1_use)
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])
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dnl
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dnl Define autoheader template for using the underscore functions
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dnl For each parameter, create a macro where if func doesn't exist,
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dnl but _func does, then it will "#define func _func".
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dnl
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dnl GLIBCXX_MAYBE_UNDERSCORED_FUNCS
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AC_DEFUN([GLIBCXX_MAYBE_UNDERSCORED_FUNCS],
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[AC_FOREACH([glibcxx_ufunc], [$1],
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[AH_VERBATIM(_[]glibcxx_ufunc,
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[#if defined (]AS_TR_CPP(HAVE__[]glibcxx_ufunc)[) && ! defined (]AS_TR_CPP(HAVE_[]glibcxx_ufunc)[)
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# define ]AS_TR_CPP(HAVE_[]glibcxx_ufunc)[ 1
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# define ]glibcxx_ufunc[ _]glibcxx_ufunc[
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#endif])])
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])
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dnl
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dnl Check to see if the (math function) argument passed is
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dnl 1) declared when using the c++ compiler
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dnl 2) has "C" linkage
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dnl 3) if not, see if 1) and 2) for argument prepended with '_'
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dnl
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dnl Define HAVE_CARGF etc if "cargf" is declared and links
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dnl
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dnl argument 1 is name of function to check
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dnl
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dnl ASSUMES argument is a math function with ONE parameter
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dnl
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dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1
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AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1], [
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GLIBCXX_CHECK_MATH_DECL_1($1)
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if test x$glibcxx_cv_func_$1_use = x"yes"; then
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AC_CHECK_FUNCS($1)
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else
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GLIBCXX_CHECK_MATH_DECL_1(_$1)
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if test x$glibcxx_cv_func__$1_use = x"yes"; then
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AC_CHECK_FUNCS(_$1)
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fi
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fi
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GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)
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])
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dnl
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dnl Like GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
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dnl of functions at once. It's an all-or-nothing check -- either
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dnl HAVE_XYZ is defined for each of the functions, or for none of them.
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dnl Doing it this way saves significant configure time.
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AC_DEFUN([GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1], [
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define([funclist],patsubst($3,\(\w+\)\(\W*\),\1 ))dnl
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AC_MSG_CHECKING([for $1 functions])
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AC_CACHE_VAL(glibcxx_cv_func_$2_use, [
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <math.h>],
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patsubst(funclist,[\w+],[\& (0);]),
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[glibcxx_cv_func_$2_use=yes],
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[glibcxx_cv_func_$2_use=no])
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AC_LANG_RESTORE])
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AC_MSG_RESULT($glibcxx_cv_func_$2_use)
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if test x$glibcxx_cv_func_$2_use = x"yes"; then
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AC_CHECK_FUNCS(funclist)
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else
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AC_MSG_CHECKING([for _$1 functions])
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AC_CACHE_VAL(glibcxx_cv_func__$2_use, [
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <math.h>],
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patsubst(funclist,[\w+],[_\& (0);]),
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[glibcxx_cv_func__$2_use=yes],
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[glibcxx_cv_func__$2_use=no])
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AC_LANG_RESTORE])
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AC_MSG_RESULT($glibcxx_cv_func__$2_use)
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if test x$glibcxx_cv_func__$2_use = x"yes"; then
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AC_CHECK_FUNCS(patsubst(funclist,[\w+],[_\&]))
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fi
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fi
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GLIBCXX_MAYBE_UNDERSCORED_FUNCS(funclist)
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undefine([funclist])
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])
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dnl
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dnl Check to see if the (math function) argument passed is
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dnl declared when using the c++ compiler
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dnl ASSUMES argument is a math function with TWO parameters
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dnl
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dnl GLIBCXX_CHECK_MATH_DECL_2
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AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_2], [
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AC_MSG_CHECKING([for $1 declaration])
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if test x${glibcxx_cv_func_$1_use+set} != xset; then
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AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <math.h>],
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[ $1(0, 0);],
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[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
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AC_LANG_RESTORE
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])
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fi
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AC_MSG_RESULT($glibcxx_cv_func_$1_use)
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])
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dnl
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dnl Check to see if the (math function) argument passed is
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dnl 1) declared when using the c++ compiler
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dnl 2) has "C" linkage
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dnl
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dnl Define HAVE_CARGF etc if "cargf" is declared and links
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dnl
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dnl argument 1 is name of function to check
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dnl
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dnl ASSUMES argument is a math function with TWO parameters
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dnl
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dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2
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AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2], [
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GLIBCXX_CHECK_MATH_DECL_2($1)
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if test x$glibcxx_cv_func_$1_use = x"yes"; then
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AC_CHECK_FUNCS($1)
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else
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GLIBCXX_CHECK_MATH_DECL_2(_$1)
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if test x$glibcxx_cv_func__$1_use = x"yes"; then
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AC_CHECK_FUNCS(_$1)
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fi
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fi
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GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)
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])
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dnl
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dnl Check to see if the (math function) argument passed is
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dnl declared when using the c++ compiler
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dnl ASSUMES argument is a math function with THREE parameters
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dnl
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dnl GLIBCXX_CHECK_MATH_DECL_3
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AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_3], [
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AC_MSG_CHECKING([for $1 declaration])
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if test x${glibcxx_cv_func_$1_use+set} != xset; then
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AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <math.h>],
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[ $1(0, 0, 0);],
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[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
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AC_LANG_RESTORE
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])
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fi
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AC_MSG_RESULT($glibcxx_cv_func_$1_use)
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])
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dnl
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dnl Check to see if the (math function) argument passed is
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dnl 1) declared when using the c++ compiler
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dnl 2) has "C" linkage
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dnl
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dnl Define HAVE_CARGF etc if "cargf" is declared and links
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dnl
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dnl argument 1 is name of function to check
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dnl
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dnl ASSUMES argument is a math function with THREE parameters
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dnl
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dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3
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AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3], [
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GLIBCXX_CHECK_MATH_DECL_3($1)
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if test x$glibcxx_cv_func_$1_use = x"yes"; then
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AC_CHECK_FUNCS($1)
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else
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GLIBCXX_CHECK_MATH_DECL_3(_$1)
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if test x$glibcxx_cv_func__$1_use = x"yes"; then
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AC_CHECK_FUNCS(_$1)
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fi
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fi
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GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)
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])
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dnl
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dnl Check to see if the (stdlib function) argument passed is
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dnl 1) declared when using the c++ compiler
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dnl 2) has "C" linkage
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dnl
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dnl argument 1 is name of function to check
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dnl
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dnl ASSUMES argument is a stdlib function without parameters
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dnl
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dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_0
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AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_0], [
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AC_MSG_CHECKING([for $1 declaration])
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if test x${glibcxx_cv_func_$1_use+set} != xset; then
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AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <stdlib.h>],
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[ $1();],
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[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
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AC_LANG_RESTORE
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])
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fi
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AC_MSG_RESULT($glibcxx_cv_func_$1_use)
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if test x$glibcxx_cv_func_$1_use = x"yes"; then
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AC_CHECK_FUNCS($1)
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fi
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])
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dnl
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dnl Check to see if the (stdlib function) argument passed is
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dnl 1) declared when using the c++ compiler
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dnl 2) has "C" linkage
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dnl
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dnl argument 1 is name of function to check
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dnl
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dnl ASSUMES argument is a stdlib function with TWO parameters
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dnl
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dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2
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AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2], [
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AC_MSG_CHECKING([for $1 declaration])
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if test x${glibcxx_cv_func_$1_use+set} != xset; then
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AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <stdlib.h>],
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[ $1(0, 0);],
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[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
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AC_LANG_RESTORE
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])
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fi
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AC_MSG_RESULT($glibcxx_cv_func_$1_use)
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if test x$glibcxx_cv_func_$1_use = x"yes"; then
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AC_CHECK_FUNCS($1)
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fi
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GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)
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])
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dnl
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dnl Check to see if the (stdlib function) argument passed is
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dnl 1) declared when using the c++ compiler
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dnl 2) has "C" linkage
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dnl
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dnl argument 1 is name of function to check
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dnl
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dnl ASSUMES argument is a stdlib function with THREE parameters
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dnl
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dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3
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AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3], [
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AC_MSG_CHECKING([for $1 declaration])
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if test x${glibcxx_cv_func_$1_use+set} != xset; then
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AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <stdlib.h>],
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[ $1(0, 0, 0);],
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[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
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AC_LANG_RESTORE
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])
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fi
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AC_MSG_RESULT($glibcxx_cv_func_$1_use)
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if test x$glibcxx_cv_func_$1_use = x"yes"; then
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AC_CHECK_FUNCS($1)
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fi
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])
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dnl
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dnl Because the builtins are picky picky picky about the arguments they take,
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dnl do an explict linkage tests here.
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dnl Check to see if the (math function) argument passed is
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dnl 1) declared when using the c++ compiler
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dnl 2) has "C" linkage
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dnl
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dnl Define HAVE_CARGF etc if "cargf" is declared and links
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dnl
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dnl argument 1 is name of function to check
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dnl
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dnl ASSUMES argument is a math function with ONE parameter
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dnl
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dnl GLIBCXX_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
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AC_DEFUN([GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1], [
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AC_MSG_CHECKING([for $1 declaration])
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if test x${glibcxx_cv_func_$1_use+set} != xset; then
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AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <math.h>],
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[ $1(0);],
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[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
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AC_LANG_RESTORE
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])
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fi
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AC_MSG_RESULT($glibcxx_cv_func_$1_use)
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if test x$glibcxx_cv_func_$1_use = x"yes"; then
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AC_MSG_CHECKING([for $1 linkage])
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if test x${glibcxx_cv_func_$1_link+set} != xset; then
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AC_CACHE_VAL(glibcxx_cv_func_$1_link, [
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AC_TRY_LINK([#include <math.h>],
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[ $1(0);],
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[glibcxx_cv_func_$1_link=yes], [glibcxx_cv_func_$1_link=no])
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])
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fi
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AC_MSG_RESULT($glibcxx_cv_func_$1_link)
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define([NAME], [translit([$1],[abcdefghijklmnopqrstuvwxyz],
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[ABCDEFGHIJKLMNOPQRSTUVWXYZ])])
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if test x$glibcxx_cv_func_$1_link = x"yes"; then
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AC_DEFINE([HAVE_]NAME, 1, [Define if the compiler/host combination has $1.])
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fi
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undefine([NAME])
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fi
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])
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dnl
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dnl Check to see what builtin math functions are supported
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dnl
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dnl check for __builtin_abs
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dnl check for __builtin_fabsf
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dnl check for __builtin_fabs
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dnl check for __builtin_fabl
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dnl check for __builtin_labs
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dnl check for __builtin_sqrtf
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dnl check for __builtin_sqrtl
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dnl check for __builtin_sqrt
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dnl check for __builtin_sinf
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dnl check for __builtin_sin
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dnl check for __builtin_sinl
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dnl check for __builtin_cosf
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dnl check for __builtin_cos
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dnl check for __builtin_cosl
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dnl
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dnl GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
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AC_DEFUN([GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT], [
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dnl Test for builtin math functions.
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dnl These are made in gcc/c-common.c
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
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GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
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])
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dnl
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dnl Check to see what the underlying c library is like
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dnl These checks need to do two things:
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dnl 1) make sure the name is declared when using the c++ compiler
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dnl 2) make sure the name has "C" linkage
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dnl This might seem like overkill but experience has shown that it's not...
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dnl
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dnl Define HAVE_STRTOLD if "strtold" is declared and links
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dnl Define HAVE_STRTOF if "strtof" is declared and links
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dnl
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dnl GLIBCXX_CHECK_STDLIB_SUPPORT
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AC_DEFUN([GLIBCXX_CHECK_STDLIB_SUPPORT], [
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ac_test_CXXFLAGS="${CXXFLAGS+set}"
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ac_save_CXXFLAGS="$CXXFLAGS"
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CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
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GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
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GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
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CXXFLAGS="$ac_save_CXXFLAGS"
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])
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dnl
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dnl Check to see what the underlying c library or math library is like.
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dnl These checks need to do two things:
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dnl 1) make sure the name is declared when using the c++ compiler
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dnl 2) make sure the name has "C" linkage
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dnl This might seem like overkill but experience has shown that it's not...
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dnl
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dnl Define HAVE_CARGF etc if "cargf" is found.
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dnl
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dnl GLIBCXX_CHECK_MATH_SUPPORT
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AC_DEFUN([GLIBCXX_CHECK_MATH_SUPPORT], [
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ac_test_CXXFLAGS="${CXXFLAGS+set}"
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ac_save_CXXFLAGS="$CXXFLAGS"
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CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
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dnl Check libm
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AC_CHECK_LIB(m, sin, libm="-lm")
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ac_save_LIBS="$LIBS"
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LIBS="$LIBS $libm"
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dnl Check to see if certain C math functions exist.
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
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dnl Check to see if basic C math functions have float versions.
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GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
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float_trig,
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acosf asinf atanf \
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cosf sinf tanf \
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coshf sinhf tanhf)
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GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
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float_round,
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ceilf floorf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
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|
|
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dnl Check to see if basic C math functions have long double versions.
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|
GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
|
|
long_double_trig,
|
|
acosl asinl atanl \
|
|
cosl sinl tanl \
|
|
coshl sinhl tanhl)
|
|
GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
|
|
long_double_round,
|
|
ceill floorl)
|
|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
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|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
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|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
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GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
|
|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
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|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
|
|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
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|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
|
|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
|
|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
|
|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
|
|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
|
|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
|
|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
|
|
GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
|
|
|
|
LIBS="$ac_save_LIBS"
|
|
CXXFLAGS="$ac_save_CXXFLAGS"
|
|
])
|
|
|
|
|
|
dnl
|
|
dnl Check to see if there is native support for complex
|
|
dnl
|
|
dnl Don't compile bits in math/* if native support exits.
|
|
dnl
|
|
dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
|
|
dnl
|
|
dnl GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT
|
|
AC_DEFUN([GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT], [
|
|
dnl Check for complex versions of math functions of platform. This will
|
|
dnl always pass if libm is available, and fail if it isn't. If it is
|
|
dnl available, we assume we'll need it later, so add it to LIBS.
|
|
AC_CHECK_LIB(m, main)
|
|
AC_REPLACE_MATHFUNCS(copysignf)
|
|
|
|
dnl For __signbit to signbit conversions.
|
|
dnl Not sure why this is done, as these will be macros mostly.
|
|
dnl Should probably coordinate this with std_cmath.h.
|
|
AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
|
|
|
|
AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
|
|
|
|
dnl Compile the long double complex functions only if the function
|
|
dnl provides the non-complex long double functions that are needed.
|
|
dnl Currently this includes copysignl, which should be
|
|
dnl cached from the GLIBCXX_CHECK_MATH_SUPPORT macro, above.
|
|
if test x$ac_cv_func_copysignl = x"yes"; then
|
|
AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
|
|
fi
|
|
|
|
# Used in libmath/Makefile.am.
|
|
if test -n "$LIBMATHOBJS"; then
|
|
need_libmath=yes
|
|
fi
|
|
AC_SUBST(LIBMATHOBJS)
|
|
])
|
|
|
|
|
|
# Check for functions in math library.
|
|
# Ulrich Drepper <drepper@cygnus.com>, 1998.
|
|
#
|
|
# This file can be copied and used freely without restrictions. It can
|
|
# be used in projects which are not available under the GNU Public License
|
|
# but which still want to provide support for the GNU gettext functionality.
|
|
# Please note that the actual code is *not* freely available.
|
|
#
|
|
# serial 1
|
|
#
|
|
dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
|
|
AC_DEFUN([AC_REPLACE_MATHFUNCS],
|
|
[AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
|