diff options
Diffstat (limited to 'libquadmath/configure.ac')
| -rw-r--r-- | libquadmath/configure.ac | 83 |
1 files changed, 82 insertions, 1 deletions
diff --git a/libquadmath/configure.ac b/libquadmath/configure.ac index 0bc2315a6b2..4bde6ed50fa 100644 --- a/libquadmath/configure.ac +++ b/libquadmath/configure.ac @@ -42,6 +42,8 @@ AC_MSG_RESULT($version_specific_libs) GCC_NO_EXECUTABLES +AC_USE_SYSTEM_EXTENSIONS + # See if makeinfo has been installed and is modern enough # that we can use it. ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], @@ -110,7 +112,7 @@ esac AC_SUBST(toolexecdir) AC_SUBST(toolexeclibdir) -AC_CHECK_HEADERS(fenv.h) +AC_CHECK_HEADERS(fenv.h langinfo.h wchar.h wctype.h limits.h ctype.h printf.h errno.h) # If available, sqrtl and cbrtl speed up the calculation - # but they are not required @@ -146,6 +148,16 @@ else fi fi +# Check for hidden visibility (copied from libssp). +AC_MSG_CHECKING([whether hidden visibility is supported]) +AC_TRY_COMPILE([ +void __attribute__((visibility ("hidden"))) bar (void) {}],, +[quadmath_hidden=yes],[quadmath_hidden=no]) +AC_MSG_RESULT($quadmath_hidden) +if test x$quadmath_hidden = xyes; then + AC_DEFINE([HAVE_HIDDEN_VISIBILITY],[1],[__attribute__((visibility ("hidden"))) supported]) +fi + # Check for symbol versioning (copied from libssp). AC_MSG_CHECKING([whether symbol versioning is supported]) if test x$gcc_no_link = xyes; then @@ -213,6 +225,75 @@ AC_CACHE_CHECK([whether __float128 is supported], [libquad_cv_have_float128], ])]) AM_CONDITIONAL(BUILD_LIBQUADMATH, [test "x$libquad_cv_have_float128" = xyes]) +# Check for printf hook support. +AC_MSG_CHECKING([whether printf hooks are supported]) +AC_TRY_COMPILE([ +#include <printf.h> +#include <stdarg.h> +#include <stdlib.h> +extern void flt128_va (void *, va_list *); +extern int flt128_ais (const struct printf_info *, size_t, int *, int *); +extern int flt128_printf_fp (FILE *, const struct printf_info *, const void *const *); +],[ +int pa_flt128 = register_printf_type (flt128_va); +int mod_Q = register_printf_modifier (L"Q"); +int res = register_printf_specifier ('f', flt128_printf_fp, flt128_ais); +], +[quadmath_printf_hooks=yes],[quadmath_printf_hooks=no]) +AC_MSG_RESULT($quadmath_printf_hooks) +if test x$quadmath_printf_hooks = xyes; then + AC_DEFINE([HAVE_PRINTF_HOOKS],[1],[GNU C Library stype printf hooks supported]) +fi + +# Check for whether locale support for quadmath_snprintf or Q printf hooks +# should be provided. +AC_MSG_CHECKING([whether locale support for quadmath_snprintf should be added]) +AC_TRY_COMPILE([#include <langinfo.h>],[ +const char *s; +s = nl_langinfo (DECIMAL_POINT); +s = nl_langinfo (MON_DECIMAL_POINT); +s = nl_langinfo (GROUPING); +s = nl_langinfo (MON_GROUPING); +s = nl_langinfo (THOUSANDS_SEP); +s = nl_langinfo (MON_THOUSANDS_SEP); +s = nl_langinfo (_NL_NUMERIC_DECIMAL_POINT_WC); +s = nl_langinfo (_NL_MONETARY_DECIMAL_POINT_WC); +s = nl_langinfo (_NL_NUMERIC_THOUSANDS_SEP_WC); +s = nl_langinfo (_NL_MONETARY_THOUSANDS_SEP_WC); +s = nl_langinfo (_NL_CTYPE_MB_CUR_MAX); +(void) s; +], +[quadmath_use_locale_support=yes],[quadmath_use_locale_support=no]) +AC_MSG_RESULT($quadmath_use_locale_support) +if test x$quadmath_use_locale_support = xyes; then + AC_DEFINE([USE_LOCALE_SUPPORT],[1],[whether nl_langinfo is sufficiently supported]) +fi + +# Check for whether i18n number rewriting support for quadmath_snprintf +# or Q printf hooks should be provided. +AC_MSG_CHECKING([whether i18n number rewriting support for quadmath_snprintf should be added]) +AC_TRY_COMPILE([#include <langinfo.h> +#include <limits.h> +#include <string.h> +#include <wchar.h> +#include <wctype.h>],[ +const char *s; +char decimal[MB_LEN_MAX]; +wctrans_t map = wctrans ("to_outpunct"); +wint_t wdecimal = towctrans (L'.', map); +mbstate_t state; +memset (&state, '\0', sizeof (state)); +wcrtomb (decimal, wdecimal, &state); +s = nl_langinfo (_NL_CTYPE_OUTDIGIT0_MB); +s = nl_langinfo (_NL_CTYPE_OUTDIGIT0_WC); +(void) s; +], +[quadmath_use_i18n_number_h=yes],[quadmath_use_i18n_number_h=no]) +AC_MSG_RESULT($quadmath_use_i18n_number_h) +if test x$quadmath_use_i18n_number_h = xyes; then + AC_DEFINE([USE_I18N_NUMBER_H],[1],[whether i18n number rewriting can be supported]) +fi + AC_CACHE_SAVE if test ${multilib} = yes; then |
