AC_HELP_STRING([--with-newlib],
[assume newlib as a system C library]))
+ AC_ARG_WITH([picolibc],
+ AC_HELP_STRING([--with-picolibc],
+ [assume picolibc as a system C library]))
+
# Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't
# available). Uncomment the next line to force a particular method.
AC_PROG_LN_S
--- /dev/null
+// Locale support for picolibc -*- C++ -*-
+
+// Copyright (C) 2000-2026 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+//
+// ISO C++ 14882: 22.1 Locales
+//
+
+// Information as gleaned from /usr/include/ctype.h
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ /// @brief Base class for ctype.
+ struct ctype_base
+ {
+ // Non-standard typedefs.
+ typedef const int* __to_type;
+
+ // NB: Offsets into ctype<char>::_M_table force a particular size
+ // on the mask type. Because of this, we don't use an enum.
+ typedef short mask;
+ static const mask upper = mask (__CTYPE_UPPER);
+ static const mask lower = mask (__CTYPE_LOWER);
+ static const mask alpha = mask (__CTYPE_UPPER | __CTYPE_LOWER);
+ static const mask digit = mask (__CTYPE_DIGIT);
+ static const mask xdigit = mask (__CTYPE_HEX | __CTYPE_DIGIT);
+ static const mask space = mask (__CTYPE_SPACE);
+ static const mask print = mask (__CTYPE_PUNCT | __CTYPE_UPPER | __CTYPE_LOWER | __CTYPE_DIGIT | __CTYPE_BLANK);
+ static const mask graph = mask (__CTYPE_PUNCT | __CTYPE_UPPER | __CTYPE_LOWER | __CTYPE_DIGIT);
+ static const mask cntrl = mask (__CTYPE_CNTRL);
+ static const mask punct = mask (__CTYPE_PUNCT);
+ static const mask alnum = mask (__CTYPE_UPPER | __CTYPE_LOWER | __CTYPE_DIGIT);
+#if __cplusplus >= 201103L
+ static const mask blank = mask (__CTYPE_BLANK | __CTYPE_TAB);
+#endif
+ };
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
--- /dev/null
+// Locale support for picolibc -*- C++ -*-
+
+// Copyright (C) 2011-2026 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file ctype_configure_char.cc */
+
+//
+// ISO C++ 14882: 22.1 Locales
+//
+
+#include <locale>
+#include <cstdlib>
+#include <cstring>
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+// Information as gleaned from /usr/include/ctype.h
+
+ const ctype_base::mask*
+ ctype<char>::classic_table() throw()
+ { return _ctype_wide + 1; }
+
+ ctype<char>::ctype(__c_locale, const mask* __table, bool __del,
+ size_t __refs)
+ : facet(__refs), _M_del(__table != 0 && __del),
+ _M_toupper(NULL), _M_tolower(NULL),
+ _M_table(__table ? __table : classic_table())
+ {
+ memset(_M_widen, 0, sizeof(_M_widen));
+ _M_widen_ok = 0;
+ memset(_M_narrow, 0, sizeof(_M_narrow));
+ _M_narrow_ok = 0;
+ }
+
+ ctype<char>::ctype(const mask* __table, bool __del, size_t __refs)
+ : facet(__refs), _M_del(__table != 0 && __del),
+ _M_toupper(NULL), _M_tolower(NULL),
+ _M_table(__table ? __table : classic_table())
+ {
+ memset(_M_widen, 0, sizeof(_M_widen));
+ _M_widen_ok = 0;
+ memset(_M_narrow, 0, sizeof(_M_narrow));
+ _M_narrow_ok = 0;
+ }
+
+ char
+ ctype<char>::do_toupper(char __c) const
+ {
+ int __x = __c;
+ return (this->is(ctype_base::lower, __c) ? (__x - 'a' + 'A') : __x);
+ }
+
+ const char*
+ ctype<char>::do_toupper(char* __low, const char* __high) const
+ {
+ while (__low < __high)
+ {
+ *__low = this->do_toupper(*__low);
+ ++__low;
+ }
+ return __high;
+ }
+
+ char
+ ctype<char>::do_tolower(char __c) const
+ {
+ int __x = __c;
+ return (this->is(ctype_base::upper, __c) ? (__x - 'A' + 'a') : __x);
+ }
+
+ const char*
+ ctype<char>::do_tolower(char* __low, const char* __high) const
+ {
+ while (__low < __high)
+ {
+ *__low = this->do_tolower(*__low);
+ ++__low;
+ }
+ return __high;
+ }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
--- /dev/null
+// Locale support for picolibc -*- C++ -*-
+
+// Copyright (C) 2000-2026 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file bits/ctype_inline.h
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{locale}
+ */
+
+//
+// ISO C++ 14882: 22.1 Locales
+//
+
+// ctype bits to be inlined go here. Non-inlinable (ie virtual do_*)
+// functions go in ctype.cc
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ bool
+ ctype<char>::
+ is(mask __m, char __c) const
+ { return _M_table[static_cast<unsigned char>(__c)] & __m; }
+
+ const char*
+ ctype<char>::
+ is(const char* __low, const char* __high, mask* __vec) const
+ {
+ while (__low < __high)
+ *__vec++ = _M_table[static_cast<unsigned char>(*__low++)];
+ return __high;
+ }
+
+ const char*
+ ctype<char>::
+ scan_is(mask __m, const char* __low, const char* __high) const
+ {
+ while (__low < __high && !this->is(__m, *__low))
+ ++__low;
+ return __low;
+ }
+
+ const char*
+ ctype<char>::
+ scan_not(mask __m, const char* __low, const char* __high) const
+ {
+ while (__low < __high && this->is(__m, *__low) != 0)
+ ++__low;
+ return __low;
+ }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
--- /dev/null
+// Specific definitions for picolibc -*- C++ -*-
+
+// Copyright (C) 2026 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file bits/os_defines.h
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{iosfwd}
+ */
+
+#ifndef _GLIBCXX_OS_DEFINES
+#define _GLIBCXX_OS_DEFINES 1
+
+// System-specific #define, typedefs, corrections, etc, go here. This
+// file will come before all others.
+
+#endif
with_target_subdir
with_cross_host
with_newlib
+with_picolibc
enable_maintainer_mode
enable_shared
enable_static
configuring in a subdirectory
--with-cross-host=HOST configuring with a cross compiler
--with-newlib assume newlib as a system C library
+ --with-picolibc assume picolibc as a system C library
--with-pic try to use only PIC/non-PIC objects [default=use
both]
--with-gnu-ld assume the C compiler uses GNU ld [default=no]
fi
+
+# Check whether --with-picolibc was given.
+if test "${with_picolibc+set}" = set; then :
+ withval=$with_picolibc;
+fi
+
+
# Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't
# available). Uncomment the next line to force a particular method.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5
# Libtool setup.
if test "x${with_newlib}" != "xyes" &&
+ test "x${with_picolibc}" != "xyes" &&
test "x${with_avrlibc}" != "xyes" &&
test "x$with_headers" != "xno"; then
enable_dlopen=yes
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 12672 "configure"
+#line 12682 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 12778 "configure"
+#line 12788 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
# Fake what AC_TRY_COMPILE does.
cat > conftest.$ac_ext << EOF
-#line 16461 "configure"
+#line 16471 "configure"
#include "${glibcxx_srcdir}/config/$atomic_word_dir/atomic_word.h"
int main()
{
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
-#line 16607 "configure"
+#line 16617 "configure"
int main()
{
_Decimal32 d1;
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
-#line 16649 "configure"
+#line 16659 "configure"
template<typename T1, typename T2>
struct same
{ typedef T2 type; };
glibcxx_cv_mkdir=yes
;;
esac
+ elif test "x${with_picolibc}" = "xyes"; then
+ os_include_dir="os/picolibc"
+ $as_echo "#define HAVE_HYPOT 1" >>confdefs.h
+
+
+ # GLIBCXX_CHECK_STDLIB_SUPPORT
+ $as_echo "#define HAVE_STRTOF 1" >>confdefs.h
+
+
+ $as_echo "#define HAVE_ACOSF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_ASINF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_ATAN2F 1" >>confdefs.h
+
+ $as_echo "#define HAVE_ATANF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_CEILF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_COSF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_COSHF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_EXPF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_FABSF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_FLOORF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_FMODF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_FREXPF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_HYPOTF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_LDEXPF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_LOG10F 1" >>confdefs.h
+
+ $as_echo "#define HAVE_LOGF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_MODFF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_POWF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_SINF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_SINHF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_SQRTF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_TANF 1" >>confdefs.h
+
+ $as_echo "#define HAVE_TANHF 1" >>confdefs.h
+
+
+ # Support for iconv in picolibc is configurable.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <picolibc.h>
+int
+main ()
+{
+
+ #ifndef _ICONV_ENABLED
+ #error
+ #endif
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_picolibc_iconv_enabled=yes
+else
+ ac_picolibc_iconv_enabled=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ if test "$ac_picolibc_iconv_enabled" = yes; then
+ $as_echo "#define HAVE_ICONV 1" >>confdefs.h
+
+ fi
+
+ $as_echo "#define HAVE_MEMALIGN 1" >>confdefs.h
+
+
+ # Check for TLS
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <picolibc.h>
+int
+main ()
+{
+
+ #ifndef __THREAD_LOCAL_STORAGE
+ #error
+ #endif
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_picolibc_tls_enabled=yes
+else
+ ac_picolibc_tls_enabled=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ if test "$ac_picolibc_tls_enabled" = yes; then
+ $as_echo "#define HAVE_TLS 1" >>confdefs.h
+
+ fi
+
+ $as_echo "#define HAVE_ALIGNED_ALLOC 1" >>confdefs.h
+
+ $as_echo "#define HAVE_AT_QUICK_EXIT 1" >>confdefs.h
+
+ $as_echo "#define HAVE_LINK 1" >>confdefs.h
+
+ $as_echo "#define HAVE_SYS_STAT_H 1" >>confdefs.h
+
+ $as_echo "#define HAVE_SYS_TYPES_H 1" >>confdefs.h
+
+ $as_echo "#define HAVE_SETENV 1" >>confdefs.h
+
+ $as_echo "#define HAVE_STRERROR_L 1" >>confdefs.h
+
+ $as_echo "#define HAVE_S_ISREG 1" >>confdefs.h
+
+ $as_echo "#define HAVE_UNISTD_H 1" >>confdefs.h
+
+
elif test "x$with_headers" != "xno"; then
# Base decisions on target environment.
CXXFLAGS='-O0 -S'
cat > conftest.$ac_ext << EOF
-#line 54008 "configure"
+#line 54148 "configure"
#include <stddef.h>
int main()
{
# Libtool setup.
if test "x${with_newlib}" != "xyes" &&
+ test "x${with_picolibc}" != "xyes" &&
test "x${with_avrlibc}" != "xyes" &&
test "x$with_headers" != "xno"; then
AC_LIBTOOL_DLOPEN
glibcxx_cv_mkdir=yes
;;
esac
+ elif test "x${with_picolibc}" = "xyes"; then
+ os_include_dir="os/picolibc"
+ AC_DEFINE(HAVE_HYPOT)
+
+ # GLIBCXX_CHECK_STDLIB_SUPPORT
+ AC_DEFINE(HAVE_STRTOF)
+
+ AC_DEFINE(HAVE_ACOSF)
+ AC_DEFINE(HAVE_ASINF)
+ AC_DEFINE(HAVE_ATAN2F)
+ AC_DEFINE(HAVE_ATANF)
+ AC_DEFINE(HAVE_CEILF)
+ AC_DEFINE(HAVE_COSF)
+ AC_DEFINE(HAVE_COSHF)
+ AC_DEFINE(HAVE_EXPF)
+ AC_DEFINE(HAVE_FABSF)
+ AC_DEFINE(HAVE_FLOORF)
+ AC_DEFINE(HAVE_FMODF)
+ AC_DEFINE(HAVE_FREXPF)
+ AC_DEFINE(HAVE_HYPOTF)
+ AC_DEFINE(HAVE_LDEXPF)
+ AC_DEFINE(HAVE_LOG10F)
+ AC_DEFINE(HAVE_LOGF)
+ AC_DEFINE(HAVE_MODFF)
+ AC_DEFINE(HAVE_POWF)
+ AC_DEFINE(HAVE_SINF)
+ AC_DEFINE(HAVE_SINHF)
+ AC_DEFINE(HAVE_SQRTF)
+ AC_DEFINE(HAVE_TANF)
+ AC_DEFINE(HAVE_TANHF)
+
+ # Support for iconv in picolibc is configurable.
+ AC_TRY_COMPILE([#include <picolibc.h>], [
+ #ifndef _ICONV_ENABLED
+ #error
+ #endif], [ac_picolibc_iconv_enabled=yes], [ac_picolibc_iconv_enabled=no])
+ if test "$ac_picolibc_iconv_enabled" = yes; then
+ AC_DEFINE(HAVE_ICONV)
+ fi
+
+ AC_DEFINE(HAVE_MEMALIGN)
+
+ # Check for TLS
+ AC_TRY_COMPILE([#include <picolibc.h>], [
+ #ifndef __THREAD_LOCAL_STORAGE
+ #error
+ #endif], [ac_picolibc_tls_enabled=yes], [ac_picolibc_tls_enabled=no])
+ if test "$ac_picolibc_tls_enabled" = yes; then
+ AC_DEFINE(HAVE_TLS)
+ fi
+
+ AC_DEFINE(HAVE_ALIGNED_ALLOC)
+ AC_DEFINE(HAVE_AT_QUICK_EXIT)
+ AC_DEFINE(HAVE_LINK)
+ AC_DEFINE(HAVE_SYS_STAT_H)
+ AC_DEFINE(HAVE_SYS_TYPES_H)
+ AC_DEFINE(HAVE_SETENV)
+ AC_DEFINE(HAVE_STRERROR_L)
+ AC_DEFINE(HAVE_S_ISREG)
+ AC_DEFINE(HAVE_UNISTD_H)
+
elif test "x$with_headers" != "xno"; then
GLIBCXX_CROSSCONFIG
fi
projects / thirdparty / gcc.git / commitdiff
