diff options
Diffstat (limited to 'libstdc++-v3/linkage.m4')
| -rw-r--r-- | libstdc++-v3/linkage.m4 | 37 |
1 files changed, 7 insertions, 30 deletions
diff --git a/libstdc++-v3/linkage.m4 b/libstdc++-v3/linkage.m4 index 87c64cb..9af671d 100644 --- a/libstdc++-v3/linkage.m4 +++ b/libstdc++-v3/linkage.m4 @@ -1,5 +1,5 @@ dnl -dnl This file contains stuff. +dnl This file contains macros for testing linkage. dnl dnl @@ -20,7 +20,7 @@ AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_1], [ #endif ], [ $1(0);], - [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) + [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) AC_LANG_RESTORE ]) fi @@ -291,7 +291,7 @@ AC_DEFUN([GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1], [ AC_MSG_RESULT($glibcxx_cv_func_$1_link) if test x$glibcxx_cv_func_$1_link = x"yes"; then ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` - AC_DEFINE_UNQUOTED(${ac_tr_func}) + AC_DEFINE(${ac_tr_func}, 1, [Defined if $1 exists.]) fi fi ]) @@ -336,30 +336,6 @@ AC_DEFUN([GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT], [ GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl) - - dnl There is, without a doubt, a more elegant way to have these - dnl names exported so that they won't be stripped out of acconfig.h by - dnl autoheader. I leave this as an exercise to somebody less frustrated - dnl than I.... please email the libstdc++ list if you can figure out a - dnl more elegant approach (see autoconf/acgen.m4 and specifically - dnl AC_CHECK_FUNC for things to steal.) - dummyvar=no - if test x$dummyvar = x"yes"; then - AC_DEFINE(HAVE___BUILTIN_ABS) - AC_DEFINE(HAVE___BUILTIN_LABS) - AC_DEFINE(HAVE___BUILTIN_COS) - AC_DEFINE(HAVE___BUILTIN_COSF) - AC_DEFINE(HAVE___BUILTIN_COSL) - AC_DEFINE(HAVE___BUILTIN_FABS) - AC_DEFINE(HAVE___BUILTIN_FABSF) - AC_DEFINE(HAVE___BUILTIN_FABSL) - AC_DEFINE(HAVE___BUILTIN_SIN) - AC_DEFINE(HAVE___BUILTIN_SINF) - AC_DEFINE(HAVE___BUILTIN_SINL) - AC_DEFINE(HAVE___BUILTIN_SQRT) - AC_DEFINE(HAVE___BUILTIN_SQRTF) - AC_DEFINE(HAVE___BUILTIN_SQRTL) - fi ]) dnl @@ -518,7 +494,10 @@ AC_DEFUN([GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT], [ 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 @@ -529,7 +508,7 @@ AC_DEFUN([GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT], [ AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"]) fi - # XXX Review this. Nothing uses it. + # Used in libmath/Makefile.am. if test -n "$LIBMATHOBJS"; then need_libmath=yes fi @@ -550,5 +529,3 @@ AC_DEFUN([GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT], [ dnl AC_REPLACE_MATHFUNCS(FUNCTION...) AC_DEFUN([AC_REPLACE_MATHFUNCS], [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])]) - -dnl vim:et:ts=2 |