Greetings Alex,
You added some math reject macros on 2020-01-23 in gcc-10. Here are a
few more.
If approved, also request permission to backport to gcc-10 branch.
--Douglas Rupp, AdaCore
diff --git libstdc++-v3/configure libstdc++-v3/configure
index 502f6602001..6b54078ad79 100755
--- libstdc++-v3/configure
+++ libstdc++-v3/configure
@@ -74116,6 +74116,261 @@ _ACEOF
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for hypotl declaration" >&5
+$as_echo_n "checking for hypotl declaration... " >&6; }
+if ${glibcxx_cv_func_hypotl_use+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+
+
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+#include <math.h>
+#ifdef HAVE_IEEEFP_H
+# include <ieeefp.h>
+#endif
+#undef hypotl
+
+int
+main ()
+{
+
+ void (*f)(void) = (void (*)(void))hypotl;
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ glibcxx_cv_func_hypotl_use=yes
+
+else
+ glibcxx_cv_func_hypotl_use=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_hypotl_use" >&5
+$as_echo "$glibcxx_cv_func_hypotl_use" >&6; }
+ if test "x$glibcxx_cv_func_hypotl_use" = xyes; then
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_HYPOTL 1
+_ACEOF
+
+ fi
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ldexpf declaration" >&5
+$as_echo_n "checking for ldexpf declaration... " >&6; }
+if ${glibcxx_cv_func_ldexpf_use+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+
+
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+#include <math.h>
+#ifdef HAVE_IEEEFP_H
+# include <ieeefp.h>
+#endif
+#undef ldexpf
+
+int
+main ()
+{
+
+ void (*f)(void) = (void (*)(void))ldexpf;
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ glibcxx_cv_func_ldexpf_use=yes
+
+else
+ glibcxx_cv_func_ldexpf_use=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_ldexpf_use" >&5
+$as_echo "$glibcxx_cv_func_ldexpf_use" >&6; }
+ if test "x$glibcxx_cv_func_ldexpf_use" = xyes; then
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LDEXPF 1
+_ACEOF
+
+ fi
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for modff declaration" >&5
+$as_echo_n "checking for modff declaration... " >&6; }
+if ${glibcxx_cv_func_modff_use+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+
+
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+#include <math.h>
+#ifdef HAVE_IEEEFP_H
+# include <ieeefp.h>
+#endif
+#undef modff
+
+int
+main ()
+{
+
+ void (*f)(void) = (void (*)(void))modff;
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ glibcxx_cv_func_modff_use=yes
+
+else
+ glibcxx_cv_func_modff_use=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_modff_use" >&5
+$as_echo "$glibcxx_cv_func_modff_use" >&6; }
+ if test "x$glibcxx_cv_func_modff_use" = xyes; then
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_MODFF 1
+_ACEOF
+
+ fi
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for hypotf declaration" >&5
+$as_echo_n "checking for hypotf declaration... " >&6; }
+if ${glibcxx_cv_func_hypotf_use+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+
+
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+#include <math.h>
+#ifdef HAVE_IEEEFP_H
+# include <ieeefp.h>
+#endif
+#undef hypotf
+
+int
+main ()
+{
+
+ void (*f)(void) = (void (*)(void))hypotf;
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ glibcxx_cv_func_hypotf_use=yes
+
+else
+ glibcxx_cv_func_hypotf_use=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_hypotf_use" >&5
+$as_echo "$glibcxx_cv_func_hypotf_use" >&6; }
+ if test "x$glibcxx_cv_func_hypotf_use" = xyes; then
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_HYPOTF 1
+_ACEOF
+
+ fi
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for frexpf declaration" >&5
+$as_echo_n "checking for frexpf declaration... " >&6; }
+if ${glibcxx_cv_func_frexpf_use+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+
+
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+#include <math.h>
+#ifdef HAVE_IEEEFP_H
+# include <ieeefp.h>
+#endif
+#undef frexpf
+
+int
+main ()
+{
+
+ void (*f)(void) = (void (*)(void))frexpf;
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ glibcxx_cv_func_frexpf_use=yes
+
+else
+ glibcxx_cv_func_frexpf_use=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_frexpf_use" >&5
+$as_echo "$glibcxx_cv_func_frexpf_use" >&6; }
+ if test "x$glibcxx_cv_func_frexpf_use" = xyes; then
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_FREXPF 1
+_ACEOF
+
+ fi
+
+
+
;;
*)
as_fn_error $? "No support for this host/target combination." "$LINENO" 5
diff --git libstdc++-v3/crossconfig.m4 libstdc++-v3/crossconfig.m4
index fe182883536..313f84d05f4 100644
--- libstdc++-v3/crossconfig.m4
+++ libstdc++-v3/crossconfig.m4
@@ -299,7 +299,8 @@ dnl # macros, in which case the tests might fail, and we might have to
dnl # switch to more elaborate tests.
GLIBCXX_CHECK_MATH_DECLS([
acosl asinl atan2l atanl ceill cosl coshl expl fabsl floorl fmodl
- frexpl ldexpl log10l logl modfl powl sinl sinhl sqrtl tanl tanhl])
+ frexpl ldexpl log10l logl modfl powl sinl sinhl sqrtl tanl tanhl hypotl
+ ldexpf modff hypotf frexpf])
dnl # sincosl is the only one missing here, compared with the *l
dnl # functions in the list guarded by
dnl # long_double_math_on_this_cpu in configure.ac, right after
2020-05-20 Douglas B Rupp <r...@adacore.com>
libstdc++v3/
* crossconfig.m4 (GLIBCXX_CHECK_MATH_DECL): More reject macros.
* configure: Rebuild.
