Retro68/gcc/libstdc++-v3/linkage.m4
Wolfgang Thaller aaf905ce07 add gcc 4.70
2012-03-28 01:13:14 +02:00

400 lines
13 KiB
Plaintext

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"
])