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 #ifdef HAVE_IEEEFP_H #include #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 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 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) fi ]) 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 ], 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) fi 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 ], [ $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) fi ]) 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 ], [ $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) 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 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 ], [ $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 ONE parameter dnl dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_1 AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_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 ], [ $1(0);], [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) AC_LANG_RESTORE ]) fi AC_MSG_RESULT($glibcxx_cv_func_$1_use) if test x$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 ], [ $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 ]) 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 ], [ $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="$CXXFLAGS" CXXFLAGS='-fno-builtin -D_GNU_SOURCE' GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_1(at_quick_exit) GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_1(quick_exit) GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold) GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof) CXXFLAGS="$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" ])