diff --git a/libcxx/include/print b/libcxx/include/print
index 7f2b5bac3dcf6..543a540ee4f27 100644
--- a/libcxx/include/print
+++ b/libcxx/include/print
@@ -32,6 +32,7 @@ namespace std {
 */
 
 #include <__assert> // all public C++ headers provide the assertion handler
+#include <__availability>
 #include <__concepts/same_as.h>
 #include <__config>
 #include <__system_error/system_error.h>
@@ -43,10 +44,6 @@ namespace std {
 #include <string_view>
 #include <version>
 
-#if __has_include(<unistd.h>)
-#  include <unistd.h>
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
 #endif
@@ -68,7 +65,8 @@ _LIBCPP_EXPORTED_FROM_ABI bool __is_windows_terminal(FILE* __stream);
 // Note the function is only implemented on the Windows platform.
 _LIBCPP_EXPORTED_FROM_ABI void __write_to_windows_console(FILE* __stream, wstring_view __view);
 #  endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
-
+#elif __has_include(<unistd.h>)
+_LIBCPP_EXPORTED_FROM_ABI bool __is_posix_terminal(FILE* __stream);
 #endif // _LIBCPP_WIN32API
 
 #if _LIBCPP_STD_VER >= 23
@@ -195,15 +193,17 @@ inline constexpr bool __use_unicode_execution_charset = _MSVC_EXECUTION_CHARACTE
 inline constexpr bool __use_unicode_execution_charset = true;
 #  endif
 
-_LIBCPP_HIDE_FROM_ABI inline bool __is_terminal(FILE* __stream) {
+_LIBCPP_HIDE_FROM_ABI inline bool __is_terminal([[maybe_unused]] FILE* __stream) {
   // The macro _LIBCPP_TESTING_PRINT_IS_TERMINAL is used to change
   // the behavior in the test. This is not part of the public API.
 #  ifdef _LIBCPP_TESTING_PRINT_IS_TERMINAL
   return _LIBCPP_TESTING_PRINT_IS_TERMINAL(__stream);
+#  elif _LIBCPP_AVAILABILITY_HAS_PRINT == 0
+  return false;
 #  elif defined(_LIBCPP_WIN32API)
   return std::__is_windows_terminal(__stream);
 #  elif __has_include(<unistd.h>)
-  return isatty(fileno(__stream));
+  return std::__is_posix_terminal(__stream);
 #  else
 #    error "Provide a way to determine whether a FILE* is a terminal"
 #  endif
diff --git a/libcxx/lib/abi/CHANGELOG.TXT b/libcxx/lib/abi/CHANGELOG.TXT
index 1179c253f18c8..7ff604959f4d5 100644
--- a/libcxx/lib/abi/CHANGELOG.TXT
+++ b/libcxx/lib/abi/CHANGELOG.TXT
@@ -16,6 +16,14 @@ New entries should be added directly below the "Version" header.
 Version 18.0
 ------------
 
+* [libc++] Moves is_terminal to the dylib
+
+  The patch moves the POSIX implementation of is_terminal to the dylib. This is
+  needed to avoid using <unistd.h> in public headers.
+
+  All platforms
+  Symbol added: _ZNSt6__ndk119__is_posix_terminalEP7__sFILE
+
 * [libc++abi] Implement __cxa_init_primary_exception and use it to optimize std::make_exception_ptr (#65534)
 
   This patch implements __cxa_init_primary_exception, an extension to the Itanium C++ ABI.
diff --git a/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
index c2fea4d8adb42..2064f45bf8c08 100644
--- a/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -1495,6 +1495,7 @@
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '__ZNSt3__119__is_posix_terminalEP7__sFILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}
diff --git a/libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
index a60f099b53205..fec3a4505a0c6 100644
--- a/libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -1176,6 +1176,7 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt6__ndk119__is_posix_terminalEP7__sFILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}
diff --git a/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
index a159ff5221866..e52cf98dd4c4f 100644
--- a/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -534,6 +534,7 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutex8try_lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__is_posix_terminalEP4FILE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base11lock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
diff --git a/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
index 5749a7520f9ba..52a04706ddf20 100644
--- a/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -534,6 +534,7 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutex8try_lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__is_posix_terminalEP4FILE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base11lock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
diff --git a/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
index e827114f16919..bced6b2ea81ba 100644
--- a/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -1495,6 +1495,7 @@
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '__ZNSt3__119__is_posix_terminalEP7__sFILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}
diff --git a/libcxx/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
index f4077adc074e0..efa2189e9c928 100644
--- a/libcxx/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -1176,6 +1176,7 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt6__ndk119__is_posix_terminalEP7__sFILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}
diff --git a/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist
index e3d3fcb35d840..ebda5b0dfba57 100644
--- a/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -1190,6 +1190,7 @@
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt3__119__is_posix_terminalEP7__sFILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}
diff --git a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
index 16923301d2548..6432ad3be3585 100644
--- a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -1188,6 +1188,7 @@
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt3__119__is_posix_terminalEP8_IO_FILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}
diff --git a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist
index 2380ffb100de9..1fe84e17b3f7f 100644
--- a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist
+++ b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist
@@ -1159,6 +1159,7 @@
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt3__119__is_posix_terminalEP8_IO_FILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}
diff --git a/libcxx/src/print.cpp b/libcxx/src/print.cpp
index 3692187a5954a..8fa59fdd097bc 100644
--- a/libcxx/src/print.cpp
+++ b/libcxx/src/print.cpp
@@ -8,22 +8,26 @@
 
 #include <__config>
 
-#if defined(_LIBCPP_WIN32API)
+#include <cstdlib>
+#include <print>
+
+#include <__system_error/system_error.h>
 
-#  include <cstdlib>
-#  include <print>
+#include "filesystem/error.h"
 
+#if defined(_LIBCPP_WIN32API)
 #  define WIN32_LEAN_AND_MEAN
 #  define NOMINMAX
 #  include <io.h>
 #  include <windows.h>
-
-#  include <__system_error/system_error.h>
-
-#  include "filesystem/error.h"
+#elif __has_include(<unistd.h>)
+#  include <unistd.h>
+#endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
+#if defined(_LIBCPP_WIN32API)
+
 _LIBCPP_EXPORTED_FROM_ABI bool __is_windows_terminal(FILE* __stream) {
   // Note the Standard does this in one call, but it's unclear whether
   // an invalid handle is allowed when calling GetConsoleMode.
@@ -52,6 +56,9 @@ __write_to_windows_console([[maybe_unused]] FILE* __stream, [[maybe_unused]] wst
 }
 #  endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
 
-_LIBCPP_END_NAMESPACE_STD
+#elif __has_include(<unistd.h>) // !_LIBCPP_WIN32API
 
-#endif // !_LIBCPP_WIN32API
+_LIBCPP_EXPORTED_FROM_ABI bool __is_posix_terminal(FILE* __stream) { return isatty(fileno(__stream)); }
+#endif
+
+_LIBCPP_END_NAMESPACE_STD