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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [libstdc++-v3/] [linkage.m4] - Rev 799
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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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