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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [libstdc++-v3/] [linkage.m4] - Blame information for rev 424

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dnl
dnl This file contains macros for testing linkage.
dnl
 
dnl
dnl Check to see if the (math function) argument passed is
dnl declared when using the c++ compiler
dnl ASSUMES argument is a math function with ONE parameter
dnl
dnl GLIBCXX_CHECK_MATH_DECL_1
AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_1], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
      AC_LANG_SAVE
      AC_LANG_CPLUSPLUS
      AC_TRY_COMPILE([#include <math.h>
                      #ifdef HAVE_IEEEFP_H
                      #include <ieeefp.h>
                      #endif
                     ],
                     [ $1(0);],
                      [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
      AC_LANG_RESTORE
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
])
 
 
dnl
dnl Define autoheader template for using the underscore functions
dnl For each parameter, create a macro where if func doesn't exist,
dnl but _func does, then it will "#define func _func".
dnl
dnl GLIBCXX_MAYBE_UNDERSCORED_FUNCS
AC_DEFUN([GLIBCXX_MAYBE_UNDERSCORED_FUNCS],
[AC_FOREACH([glibcxx_ufunc], [$1],
  [AH_VERBATIM(_[]glibcxx_ufunc,
[#if defined (]AS_TR_CPP(HAVE__[]glibcxx_ufunc)[) && ! defined (]AS_TR_CPP(HAVE_[]glibcxx_ufunc)[)
# define ]AS_TR_CPP(HAVE_[]glibcxx_ufunc)[ 1
# define ]glibcxx_ufunc[ _]glibcxx_ufunc[
#endif])])
])
 
 
dnl
dnl Check to see if the (math function) argument passed is
dnl 1) declared when using the c++ compiler
dnl 2) has "C" linkage
dnl 3) if not, see if 1) and 2) for argument prepended with '_'
dnl
dnl Define HAVE_CARGF etc if "cargf" is declared and links
dnl
dnl argument 1 is name of function to check
dnl
dnl ASSUMES argument is a math function with ONE parameter
dnl
dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1
AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1], [
  GLIBCXX_CHECK_MATH_DECL_1($1)
  if test x$glibcxx_cv_func_$1_use = x"yes"; then
    AC_CHECK_FUNCS($1)
  else
    GLIBCXX_CHECK_MATH_DECL_1(_$1)
    if test x$glibcxx_cv_func__$1_use = x"yes"; then
      AC_CHECK_FUNCS(_$1)
    fi
  fi
  GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)
])
 
 
dnl
dnl Like GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
dnl of functions at once.  It's an all-or-nothing check -- either
dnl HAVE_XYZ is defined for each of the functions, or for none of them.
dnl Doing it this way saves significant configure time.
AC_DEFUN([GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1], [
  define([funclist],patsubst($3,\(\w+\)\(\W*\),\1 ))dnl
  AC_MSG_CHECKING([for $1 functions])
  AC_CACHE_VAL(glibcxx_cv_func_$2_use, [
    AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
    AC_TRY_COMPILE([#include <math.h>],
                   patsubst(funclist,[\w+],[\& (0);]),
                   [glibcxx_cv_func_$2_use=yes],
                   [glibcxx_cv_func_$2_use=no])
    AC_LANG_RESTORE])
  AC_MSG_RESULT($glibcxx_cv_func_$2_use)
  if test x$glibcxx_cv_func_$2_use = x"yes"; then
    AC_CHECK_FUNCS(funclist)
  else
    AC_MSG_CHECKING([for _$1 functions])
    AC_CACHE_VAL(glibcxx_cv_func__$2_use, [
      AC_LANG_SAVE
      AC_LANG_CPLUSPLUS
      AC_TRY_COMPILE([#include <math.h>],
                     patsubst(funclist,[\w+],[_\& (0);]),
                     [glibcxx_cv_func__$2_use=yes],
                     [glibcxx_cv_func__$2_use=no])
      AC_LANG_RESTORE])
    AC_MSG_RESULT($glibcxx_cv_func__$2_use)
    if test x$glibcxx_cv_func__$2_use = x"yes"; then
      AC_CHECK_FUNCS(patsubst(funclist,[\w+],[_\&]))
    fi
  fi
  GLIBCXX_MAYBE_UNDERSCORED_FUNCS(funclist)
  undefine([funclist])
])
 
dnl
dnl Check to see if the (math function) argument passed is
dnl declared when using the c++ compiler
dnl ASSUMES argument is a math function with TWO parameters
dnl
dnl GLIBCXX_CHECK_MATH_DECL_2
AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_2], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
      AC_LANG_SAVE
      AC_LANG_CPLUSPLUS
      AC_TRY_COMPILE([#include <math.h>],
                     [ $1(0, 0);],
                     [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
      AC_LANG_RESTORE
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
])
 
dnl
dnl Check to see if the (math function) argument passed is
dnl 1) declared when using the c++ compiler
dnl 2) has "C" linkage
dnl
dnl Define HAVE_CARGF etc if "cargf" is declared and links
dnl
dnl argument 1 is name of function to check
dnl
dnl ASSUMES argument is a math function with TWO parameters
dnl
dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2
AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2], [
  GLIBCXX_CHECK_MATH_DECL_2($1)
  if test x$glibcxx_cv_func_$1_use = x"yes"; then
    AC_CHECK_FUNCS($1)
  else
    GLIBCXX_CHECK_MATH_DECL_2(_$1)
    if test x$glibcxx_cv_func__$1_use = x"yes"; then
      AC_CHECK_FUNCS(_$1)
    fi
  fi
  GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)
])
 
 
dnl
dnl Check to see if the (math function) argument passed is
dnl declared when using the c++ compiler
dnl ASSUMES argument is a math function with THREE parameters
dnl
dnl GLIBCXX_CHECK_MATH_DECL_3
AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_3], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
      AC_LANG_SAVE
      AC_LANG_CPLUSPLUS
      AC_TRY_COMPILE([#include <math.h>],
                     [ $1(0, 0, 0);],
                     [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
      AC_LANG_RESTORE
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
])
 
dnl
dnl Check to see if the (math function) argument passed is
dnl 1) declared when using the c++ compiler
dnl 2) has "C" linkage
dnl
dnl Define HAVE_CARGF etc if "cargf" is declared and links
dnl
dnl argument 1 is name of function to check
dnl
dnl ASSUMES argument is a math function with THREE parameters
dnl
dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3
AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3], [
  GLIBCXX_CHECK_MATH_DECL_3($1)
  if test x$glibcxx_cv_func_$1_use = x"yes"; then
    AC_CHECK_FUNCS($1)
  else
    GLIBCXX_CHECK_MATH_DECL_3(_$1)
    if test x$glibcxx_cv_func__$1_use = x"yes"; then
      AC_CHECK_FUNCS(_$1)
    fi
  fi
  GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)
])
 
 
dnl
dnl Check to see if the (stdlib function) argument passed is
dnl 1) declared when using the c++ compiler
dnl 2) has "C" linkage
dnl
dnl argument 1 is name of function to check
dnl
dnl ASSUMES argument is a stdlib function without parameters
dnl
dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_0
AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_0], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
      AC_LANG_SAVE
      AC_LANG_CPLUSPLUS
      AC_TRY_COMPILE([#include <stdlib.h>],
                     [ $1();],
                     [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
      AC_LANG_RESTORE
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
  if test x$glibcxx_cv_func_$1_use = x"yes"; then
    AC_CHECK_FUNCS($1)
  fi
])
 
 
dnl
dnl Check to see if the (stdlib function) argument passed is
dnl 1) declared when using the c++ compiler
dnl 2) has "C" linkage
dnl
dnl argument 1 is name of function to check
dnl
dnl ASSUMES argument is a stdlib function with TWO parameters
dnl
dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2
AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
      AC_LANG_SAVE
      AC_LANG_CPLUSPLUS
      AC_TRY_COMPILE([#include <stdlib.h>],
                     [ $1(0, 0);],
                     [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
      AC_LANG_RESTORE
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
  if test x$glibcxx_cv_func_$1_use = x"yes"; then
    AC_CHECK_FUNCS($1)
  fi
  GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)
])
 
 
dnl
dnl Check to see if the (stdlib function) argument passed is
dnl 1) declared when using the c++ compiler
dnl 2) has "C" linkage
dnl
dnl argument 1 is name of function to check
dnl
dnl ASSUMES argument is a stdlib function with THREE parameters
dnl
dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3
AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
      AC_LANG_SAVE
      AC_LANG_CPLUSPLUS
      AC_TRY_COMPILE([#include <stdlib.h>],
                     [ $1(0, 0, 0);],
                     [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
      AC_LANG_RESTORE
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
  if test x$glibcxx_cv_func_$1_use = x"yes"; then
    AC_CHECK_FUNCS($1)
  fi
])
 
dnl
dnl Check to see what the underlying c library is like
dnl These checks need to do two things:
dnl 1) make sure the name is declared when using the c++ compiler
dnl 2) make sure the name has "C" linkage
dnl This might seem like overkill but experience has shown that it's not...
dnl
dnl Define HAVE_STRTOLD if "strtold" is declared and links
dnl Define HAVE_STRTOF if "strtof" is declared and links
dnl
dnl GLIBCXX_CHECK_STDLIB_SUPPORT
AC_DEFUN([GLIBCXX_CHECK_STDLIB_SUPPORT], [
  ac_test_CXXFLAGS="${CXXFLAGS+set}"
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
 
  GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
  GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
 
  CXXFLAGS="$ac_save_CXXFLAGS"
])
 
dnl
dnl Check to see what the underlying c library or math library is like.
dnl These checks need to do two things:
dnl 1) make sure the name is declared when using the c++ compiler
dnl 2) make sure the name has "C" linkage
dnl This might seem like overkill but experience has shown that it's not...
dnl
dnl Define HAVE_CARGF etc if "cargf" is found.
dnl
dnl GLIBCXX_CHECK_MATH_SUPPORT
AC_DEFUN([GLIBCXX_CHECK_MATH_SUPPORT], [
  ac_test_CXXFLAGS="${CXXFLAGS+set}"
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
 
  dnl Check libm
  AC_CHECK_LIB(m, sin, libm="-lm")
  ac_save_LIBS="$LIBS"
  LIBS="$LIBS $libm"
 
  dnl Check to see if certain C math functions exist.
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
 
  dnl Check to see if basic C math functions have float versions.
  GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
                                          float_trig,
                                          acosf asinf atanf \
                                          cosf sinf tanf \
                                          coshf sinhf tanhf)
  GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
                                          float_round,
                                          ceilf floorf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
 
  dnl Check to see if basic C math functions have long double versions.
  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)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
  GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
  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"
])

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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [libstdc++-v3/] [linkage.m4] - Blame information for rev 424

Line No.	Rev	Author	Line
1	424	jeremybenn	`dnl`
2			`dnl This file contains macros for testing linkage.`
3			`dnl`
4
5			`dnl`
6			`dnl Check to see if the (math function) argument passed is`
7			`dnl declared when using the c++ compiler`
8			`dnl ASSUMES argument is a math function with ONE parameter`
9			`dnl`
10			`dnl GLIBCXX_CHECK_MATH_DECL_1`
11			`AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_1], [`
12			`AC_MSG_CHECKING([for $1 declaration])`
13			`if test x${glibcxx_cv_func_$1_use+set} != xset; then`
14			`AC_CACHE_VAL(glibcxx_cv_func_$1_use, [`
15			`AC_LANG_SAVE`
16			`AC_LANG_CPLUSPLUS`
17			`AC_TRY_COMPILE([#include <math.h>`
18			`#ifdef HAVE_IEEEFP_H`
19			`#include <ieeefp.h>`
20			`#endif`
21			`],`
22			`[ $1(0);],`
23			`[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])`
24			`AC_LANG_RESTORE`
25			`])`
26			`fi`
27			`AC_MSG_RESULT($glibcxx_cv_func_$1_use)`
28			`])`
29
30
31			`dnl`
32			`dnl Define autoheader template for using the underscore functions`
33			`dnl For each parameter, create a macro where if func doesn't exist,`
34			`dnl but _func does, then it will "#define func _func".`
35			`dnl`
36			`dnl GLIBCXX_MAYBE_UNDERSCORED_FUNCS`
37			`AC_DEFUN([GLIBCXX_MAYBE_UNDERSCORED_FUNCS],`
38			`[AC_FOREACH([glibcxx_ufunc], [$1],`
39			`[AH_VERBATIM(_[]glibcxx_ufunc,`
40			`[#if defined (]AS_TR_CPP(HAVE__[]glibcxx_ufunc)[) && ! defined (]AS_TR_CPP(HAVE_[]glibcxx_ufunc)[)`
41			`# define ]AS_TR_CPP(HAVE_[]glibcxx_ufunc)[ 1`
42			`# define ]glibcxx_ufunc[ _]glibcxx_ufunc[`
43			`#endif])])`
44			`])`
45
46
47			`dnl`
48			`dnl Check to see if the (math function) argument passed is`
49			`dnl 1) declared when using the c++ compiler`
50			`dnl 2) has "C" linkage`
51			`dnl 3) if not, see if 1) and 2) for argument prepended with '_'`
52			`dnl`
53			`dnl Define HAVE_CARGF etc if "cargf" is declared and links`
54			`dnl`
55			`dnl argument 1 is name of function to check`
56			`dnl`
57			`dnl ASSUMES argument is a math function with ONE parameter`
58			`dnl`
59			`dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1`
60			`AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1], [`
61			`GLIBCXX_CHECK_MATH_DECL_1($1)`
62			`if test x$glibcxx_cv_func_$1_use = x"yes"; then`
63			`AC_CHECK_FUNCS($1)`
64			`else`
65			`GLIBCXX_CHECK_MATH_DECL_1(_$1)`
66			`if test x$glibcxx_cv_func__$1_use = x"yes"; then`
67			`AC_CHECK_FUNCS(_$1)`
68			`fi`
69			`fi`
70			`GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)`
71			`])`
72
73
74			`dnl`
75			`dnl Like GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of`
76			`dnl of functions at once. It's an all-or-nothing check -- either`
77			`dnl HAVE_XYZ is defined for each of the functions, or for none of them.`
78			`dnl Doing it this way saves significant configure time.`
79			`AC_DEFUN([GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1], [`
80			`define([funclist],patsubst($3,\(\w+\)\(\W*\),\1 ))dnl`
81			`AC_MSG_CHECKING([for $1 functions])`
82			`AC_CACHE_VAL(glibcxx_cv_func_$2_use, [`
83			`AC_LANG_SAVE`
84			`AC_LANG_CPLUSPLUS`
85			`AC_TRY_COMPILE([#include <math.h>],`
86			`patsubst(funclist,[\w+],[\& (0);]),`
87			`[glibcxx_cv_func_$2_use=yes],`
88			`[glibcxx_cv_func_$2_use=no])`
89			`AC_LANG_RESTORE])`
90			`AC_MSG_RESULT($glibcxx_cv_func_$2_use)`
91			`if test x$glibcxx_cv_func_$2_use = x"yes"; then`
92			`AC_CHECK_FUNCS(funclist)`
93			`else`
94			`AC_MSG_CHECKING([for _$1 functions])`
95			`AC_CACHE_VAL(glibcxx_cv_func__$2_use, [`
96			`AC_LANG_SAVE`
97			`AC_LANG_CPLUSPLUS`
98			`AC_TRY_COMPILE([#include <math.h>],`
99			`patsubst(funclist,[\w+],[_\& (0);]),`
100			`[glibcxx_cv_func__$2_use=yes],`
101			`[glibcxx_cv_func__$2_use=no])`
102			`AC_LANG_RESTORE])`
103			`AC_MSG_RESULT($glibcxx_cv_func__$2_use)`
104			`if test x$glibcxx_cv_func__$2_use = x"yes"; then`
105			`AC_CHECK_FUNCS(patsubst(funclist,[\w+],[_\&]))`
106			`fi`
107			`fi`
108			`GLIBCXX_MAYBE_UNDERSCORED_FUNCS(funclist)`
109			`undefine([funclist])`
110			`])`
111
112			`dnl`
113			`dnl Check to see if the (math function) argument passed is`
114			`dnl declared when using the c++ compiler`
115			`dnl ASSUMES argument is a math function with TWO parameters`
116			`dnl`
117			`dnl GLIBCXX_CHECK_MATH_DECL_2`
118			`AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_2], [`
119			`AC_MSG_CHECKING([for $1 declaration])`
120			`if test x${glibcxx_cv_func_$1_use+set} != xset; then`
121			`AC_CACHE_VAL(glibcxx_cv_func_$1_use, [`
122			`AC_LANG_SAVE`
123			`AC_LANG_CPLUSPLUS`
124			`AC_TRY_COMPILE([#include <math.h>],`
125			`[ $1(0, 0);],`
126			`[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])`
127			`AC_LANG_RESTORE`
128			`])`
129			`fi`
130			`AC_MSG_RESULT($glibcxx_cv_func_$1_use)`
131			`])`
132
133			`dnl`
134			`dnl Check to see if the (math function) argument passed is`
135			`dnl 1) declared when using the c++ compiler`
136			`dnl 2) has "C" linkage`
137			`dnl`
138			`dnl Define HAVE_CARGF etc if "cargf" is declared and links`
139			`dnl`
140			`dnl argument 1 is name of function to check`
141			`dnl`
142			`dnl ASSUMES argument is a math function with TWO parameters`
143			`dnl`
144			`dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2`
145			`AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2], [`
146			`GLIBCXX_CHECK_MATH_DECL_2($1)`
147			`if test x$glibcxx_cv_func_$1_use = x"yes"; then`
148			`AC_CHECK_FUNCS($1)`
149			`else`
150			`GLIBCXX_CHECK_MATH_DECL_2(_$1)`
151			`if test x$glibcxx_cv_func__$1_use = x"yes"; then`
152			`AC_CHECK_FUNCS(_$1)`
153			`fi`
154			`fi`
155			`GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)`
156			`])`
157
158
159			`dnl`
160			`dnl Check to see if the (math function) argument passed is`
161			`dnl declared when using the c++ compiler`
162			`dnl ASSUMES argument is a math function with THREE parameters`
163			`dnl`
164			`dnl GLIBCXX_CHECK_MATH_DECL_3`
165			`AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_3], [`
166			`AC_MSG_CHECKING([for $1 declaration])`
167			`if test x${glibcxx_cv_func_$1_use+set} != xset; then`
168			`AC_CACHE_VAL(glibcxx_cv_func_$1_use, [`
169			`AC_LANG_SAVE`
170			`AC_LANG_CPLUSPLUS`
171			`AC_TRY_COMPILE([#include <math.h>],`
172			`[ $1(0, 0, 0);],`
173			`[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])`
174			`AC_LANG_RESTORE`
175			`])`
176			`fi`
177			`AC_MSG_RESULT($glibcxx_cv_func_$1_use)`
178			`])`
179
180			`dnl`
181			`dnl Check to see if the (math function) argument passed is`
182			`dnl 1) declared when using the c++ compiler`
183			`dnl 2) has "C" linkage`
184			`dnl`
185			`dnl Define HAVE_CARGF etc if "cargf" is declared and links`
186			`dnl`
187			`dnl argument 1 is name of function to check`
188			`dnl`
189			`dnl ASSUMES argument is a math function with THREE parameters`
190			`dnl`
191			`dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3`
192			`AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3], [`
193			`GLIBCXX_CHECK_MATH_DECL_3($1)`
194			`if test x$glibcxx_cv_func_$1_use = x"yes"; then`
195			`AC_CHECK_FUNCS($1)`
196			`else`
197			`GLIBCXX_CHECK_MATH_DECL_3(_$1)`
198			`if test x$glibcxx_cv_func__$1_use = x"yes"; then`
199			`AC_CHECK_FUNCS(_$1)`
200			`fi`
201			`fi`
202			`GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)`
203			`])`
204
205
206			`dnl`
207			`dnl Check to see if the (stdlib function) argument passed is`
208			`dnl 1) declared when using the c++ compiler`
209			`dnl 2) has "C" linkage`
210			`dnl`
211			`dnl argument 1 is name of function to check`
212			`dnl`
213			`dnl ASSUMES argument is a stdlib function without parameters`
214			`dnl`
215			`dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_0`
216			`AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_0], [`
217			`AC_MSG_CHECKING([for $1 declaration])`
218			`if test x${glibcxx_cv_func_$1_use+set} != xset; then`
219			`AC_CACHE_VAL(glibcxx_cv_func_$1_use, [`
220			`AC_LANG_SAVE`
221			`AC_LANG_CPLUSPLUS`
222			`AC_TRY_COMPILE([#include <stdlib.h>],`
223			`[ $1();],`
224			`[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])`
225			`AC_LANG_RESTORE`
226			`])`
227			`fi`
228			`AC_MSG_RESULT($glibcxx_cv_func_$1_use)`
229			`if test x$glibcxx_cv_func_$1_use = x"yes"; then`
230			`AC_CHECK_FUNCS($1)`
231			`fi`
232			`])`
233
234
235			`dnl`
236			`dnl Check to see if the (stdlib function) argument passed is`
237			`dnl 1) declared when using the c++ compiler`
238			`dnl 2) has "C" linkage`
239			`dnl`
240			`dnl argument 1 is name of function to check`
241			`dnl`
242			`dnl ASSUMES argument is a stdlib function with TWO parameters`
243			`dnl`
244			`dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2`
245			`AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2], [`
246			`AC_MSG_CHECKING([for $1 declaration])`
247			`if test x${glibcxx_cv_func_$1_use+set} != xset; then`
248			`AC_CACHE_VAL(glibcxx_cv_func_$1_use, [`
249			`AC_LANG_SAVE`
250			`AC_LANG_CPLUSPLUS`
251			`AC_TRY_COMPILE([#include <stdlib.h>],`
252			`[ $1(0, 0);],`
253			`[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])`
254			`AC_LANG_RESTORE`
255			`])`
256			`fi`
257			`AC_MSG_RESULT($glibcxx_cv_func_$1_use)`
258			`if test x$glibcxx_cv_func_$1_use = x"yes"; then`
259			`AC_CHECK_FUNCS($1)`
260			`fi`
261			`GLIBCXX_MAYBE_UNDERSCORED_FUNCS($1)`
262			`])`
263
264
265			`dnl`
266			`dnl Check to see if the (stdlib function) argument passed is`
267			`dnl 1) declared when using the c++ compiler`
268			`dnl 2) has "C" linkage`
269			`dnl`
270			`dnl argument 1 is name of function to check`
271			`dnl`
272			`dnl ASSUMES argument is a stdlib function with THREE parameters`
273			`dnl`
274			`dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3`
275			`AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3], [`
276			`AC_MSG_CHECKING([for $1 declaration])`
277			`if test x${glibcxx_cv_func_$1_use+set} != xset; then`
278			`AC_CACHE_VAL(glibcxx_cv_func_$1_use, [`
279			`AC_LANG_SAVE`
280			`AC_LANG_CPLUSPLUS`
281			`AC_TRY_COMPILE([#include <stdlib.h>],`
282			`[ $1(0, 0, 0);],`
283			`[glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])`
284			`AC_LANG_RESTORE`
285			`])`
286			`fi`
287			`AC_MSG_RESULT($glibcxx_cv_func_$1_use)`
288			`if test x$glibcxx_cv_func_$1_use = x"yes"; then`
289			`AC_CHECK_FUNCS($1)`
290			`fi`
291			`])`
292
293			`dnl`
294			`dnl Check to see what the underlying c library is like`
295			`dnl These checks need to do two things:`
296			`dnl 1) make sure the name is declared when using the c++ compiler`
297			`dnl 2) make sure the name has "C" linkage`
298			`dnl This might seem like overkill but experience has shown that it's not...`
299			`dnl`
300			`dnl Define HAVE_STRTOLD if "strtold" is declared and links`
301			`dnl Define HAVE_STRTOF if "strtof" is declared and links`
302			`dnl`
303			`dnl GLIBCXX_CHECK_STDLIB_SUPPORT`
304			`AC_DEFUN([GLIBCXX_CHECK_STDLIB_SUPPORT], [`
305			`ac_test_CXXFLAGS="${CXXFLAGS+set}"`
306			`ac_save_CXXFLAGS="$CXXFLAGS"`
307			`CXXFLAGS='-fno-builtin -D_GNU_SOURCE'`
308
309			`GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)`
310			`GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)`
311
312			`CXXFLAGS="$ac_save_CXXFLAGS"`
313			`])`
314
315			`dnl`
316			`dnl Check to see what the underlying c library or math library is like.`
317			`dnl These checks need to do two things:`
318			`dnl 1) make sure the name is declared when using the c++ compiler`
319			`dnl 2) make sure the name has "C" linkage`
320			`dnl This might seem like overkill but experience has shown that it's not...`
321			`dnl`
322			`dnl Define HAVE_CARGF etc if "cargf" is found.`
323			`dnl`
324			`dnl GLIBCXX_CHECK_MATH_SUPPORT`
325			`AC_DEFUN([GLIBCXX_CHECK_MATH_SUPPORT], [`
326			`ac_test_CXXFLAGS="${CXXFLAGS+set}"`
327			`ac_save_CXXFLAGS="$CXXFLAGS"`
328			`CXXFLAGS='-fno-builtin -D_GNU_SOURCE'`
329
330			`dnl Check libm`
331			`AC_CHECK_LIB(m, sin, libm="-lm")`
332			`ac_save_LIBS="$LIBS"`
333			`LIBS="$LIBS $libm"`
334
335			`dnl Check to see if certain C math functions exist.`
336			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)`
337			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)`
338			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finite)`
339			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)`
340			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)`
341			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)`
342			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)`
343
344			`dnl Check to see if basic C math functions have float versions.`
345			`GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,`
346			`float_trig,`
347			`acosf asinf atanf \`
348			`cosf sinf tanf \`
349			`coshf sinhf tanhf)`
350			`GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,`
351			`float_round,`
352			`ceilf floorf)`
353			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expf)`
354			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)`
355			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)`
356			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)`
357			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)`
358			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)`
359			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)`
360			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)`
361			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)`
362			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logf)`
363			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)`
364			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modff)`
365			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modf)`
366			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powf)`
367			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)`
368			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)`
369			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)`
370
371			`dnl Check to see if basic C math functions have long double versions.`
372			`GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,`
373			`long_double_trig,`
374			`acosl asinl atanl \`
375			`cosl sinl tanl \`
376			`coshl sinhl tanhl)`
377			`GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,`
378			`long_double_round,`
379			`ceill floorl)`
380			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)`
381			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)`
382			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)`
383			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expl)`
384			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)`
385			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)`
386			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)`
387			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)`
388			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)`
389			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logl)`
390			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)`
391			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)`
392			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powl)`
393			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)`
394			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)`
395			`GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)`
396
397			`LIBS="$ac_save_LIBS"`
398			`CXXFLAGS="$ac_save_CXXFLAGS"`
399			`])`