diff --git a/Help/include/GENEX_NOTE_SOURCE_TARGET.rst b/Help/include/GENEX_NOTE_SOURCE_TARGET.rst
new file mode 100644
index 0000000000..e4ea1a5a2f
--- /dev/null
+++ b/Help/include/GENEX_NOTE_SOURCE_TARGET.rst
@@ -0,0 +1,3 @@
+
+Generator expressions in |genex_subject| are evaluated separately for each
+target that compiles the source file.
diff --git a/Help/manual/cmake-generator-expressions.7.rst b/Help/manual/cmake-generator-expressions.7.rst
index fdfc4da47f..ce9b17a6b8 100644
--- a/Help/manual/cmake-generator-expressions.7.rst
+++ b/Help/manual/cmake-generator-expressions.7.rst
@@ -2858,6 +2858,10 @@ These expressions look up the values of
   Note that for generator expressions in :ref:`Target Usage Requirements`
   this is the consuming target rather than the target specifying the
   requirement.
+  For generator expressions in
+  :ref:`source file properties <Source File Properties>`, this is the target
+  compiling the source file, so a source file shared by several targets can
+  be compiled differently by each.
 
 The expressions have special evaluation rules for some properties:
 
diff --git a/Help/prop_sf/COMPILE_DEFINITIONS.rst b/Help/prop_sf/COMPILE_DEFINITIONS.rst
index f0a8262c4d..4094508f41 100644
--- a/Help/prop_sf/COMPILE_DEFINITIONS.rst
+++ b/Help/prop_sf/COMPILE_DEFINITIONS.rst
@@ -23,6 +23,21 @@ definitions on source files.
 
 .. |genex_subject| replace:: ``COMPILE_DEFINITIONS``
 .. include:: ../include/GENEX_NOTE_PER_SOURCE.rst
+.. include:: ../include/GENEX_NOTE_SOURCE_TARGET.rst
+
+For example, ``foo.cpp`` is compiled with ``FOO=1`` in target ``A`` and with
+``FOO=2`` in target ``B``, while ``bar.cpp`` is compiled without ``FOO``:
+
+.. code-block:: cmake
+
+  add_library(A OBJECT foo.cpp bar.cpp)
+  add_library(B OBJECT foo.cpp bar.cpp)
+
+  set_property(TARGET A PROPERTY FOO_VALUE 1)
+  set_property(TARGET B PROPERTY FOO_VALUE 2)
+
+  set_property(SOURCE foo.cpp PROPERTY COMPILE_DEFINITIONS
+    "FOO=$<TARGET_PROPERTY:FOO_VALUE>")
 
 Prefer using generator expressions in :prop_sf:`!COMPILE_DEFINITIONS` over the
 deprecated :prop_sf:`COMPILE_DEFINITIONS_<CONFIG>` property.
diff --git a/Help/prop_sf/COMPILE_FLAGS.rst b/Help/prop_sf/COMPILE_FLAGS.rst
index 7d48776395..e89ed2ec6d 100644
--- a/Help/prop_sf/COMPILE_FLAGS.rst
+++ b/Help/prop_sf/COMPILE_FLAGS.rst
@@ -11,6 +11,7 @@ Use :prop_sf:`COMPILE_DEFINITIONS` to pass additional preprocessor definitions.
 
 .. |genex_subject| replace:: ``COMPILE_FLAGS``
 .. include:: ../include/GENEX_NOTE_PER_SOURCE.rst
+.. include:: ../include/GENEX_NOTE_SOURCE_TARGET.rst
 
 .. note::
 
diff --git a/Help/prop_sf/COMPILE_OPTIONS.rst b/Help/prop_sf/COMPILE_OPTIONS.rst
index e51ede33d1..91d67e55bc 100644
--- a/Help/prop_sf/COMPILE_OPTIONS.rst
+++ b/Help/prop_sf/COMPILE_OPTIONS.rst
@@ -11,6 +11,7 @@ file builds.  The options will be added after target-wide options.
 
 .. |genex_subject| replace:: ``COMPILE_OPTIONS``
 .. include:: ../include/GENEX_NOTE_PER_SOURCE.rst
+.. include:: ../include/GENEX_NOTE_SOURCE_TARGET.rst
 
 Usage example:
 
diff --git a/Help/prop_sf/INCLUDE_DIRECTORIES.rst b/Help/prop_sf/INCLUDE_DIRECTORIES.rst
index a58b4a2fb9..1ad325fe4f 100644
--- a/Help/prop_sf/INCLUDE_DIRECTORIES.rst
+++ b/Help/prop_sf/INCLUDE_DIRECTORIES.rst
@@ -15,3 +15,4 @@ Relative paths should not be added to this property directly.
 
 .. |genex_subject| replace:: ``INCLUDE_DIRECTORIES``
 .. include:: ../include/GENEX_NOTE_PER_SOURCE.rst
+.. include:: ../include/GENEX_NOTE_SOURCE_TARGET.rst
diff --git a/Tests/GeneratorExpression/CMakeLists.txt b/Tests/GeneratorExpression/CMakeLists.txt
index 18b545ba36..92cf3129ed 100644
--- a/Tests/GeneratorExpression/CMakeLists.txt
+++ b/Tests/GeneratorExpression/CMakeLists.txt
@@ -412,6 +412,15 @@ if (CMAKE_GENERATOR MATCHES "Makefiles|Ninja|Watcom WMake|FASTBuild")
                PROPERTY INCLUDE_DIRECTORIES "${CMAKE_CURRENT_BINARY_DIR}" $<$<COMPILE_LANGUAGE:C>:${CMAKE_CURRENT_BINARY_DIR}/sf_includes_COMPILE_LANGUAGE>)
 endif()
 
+# Evaluate source file properties separately for each target compiling a shared source.
+foreach (id IN ITEMS 1 2)
+  add_executable(srcgenex_shared_${id} srcgenex_shared.c)
+  set_property(TARGET srcgenex_shared_${id} PROPERTY SRCGENEX_SHARED_ID ${id})
+  target_compile_definitions(srcgenex_shared_${id} PRIVATE EXPECTED_ID=${id})
+endforeach()
+set_property(SOURCE srcgenex_shared.c
+             PROPERTY COMPILE_DEFINITIONS SHARED_ID=$<TARGET_PROPERTY:SRCGENEX_SHARED_ID>)
+
 #-----------------------------------------------------------------------------
 # Cover test properties with generator expressions.
 add_executable(echo echo.c)
diff --git a/Tests/GeneratorExpression/srcgenex_shared.c b/Tests/GeneratorExpression/srcgenex_shared.c
new file mode 100644
index 0000000000..2b48edc57a
--- /dev/null
+++ b/Tests/GeneratorExpression/srcgenex_shared.c
@@ -0,0 +1,12 @@
+#ifndef SHARED_ID
+#  error SHARED_ID not defined
+#endif
+
+#if SHARED_ID != EXPECTED_ID
+#  error SHARED_ID does not match EXPECTED_ID of the compiled target
+#endif
+
+int main(void)
+{
+  return 0;
+}