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Diffstat (limited to 'Help/release/3.1.0.rst')
| -rw-r--r-- | Help/release/3.1.0.rst | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Help/release/3.1.0.rst b/Help/release/3.1.0.rst index a5b3e8e..97a63f9 100644 --- a/Help/release/3.1.0.rst +++ b/Help/release/3.1.0.rst @@ -353,6 +353,28 @@ Deprecated and Removed Features CMake 3.1 again requires the quotes for this to work correctly. +* Prior to CMake 3.1 the Makefile generators did not escape ``#`` + correctly inside make variable assignments used in generated + makefiles, causing them to be treated as comments. This made + code like:: + + add_compile_options(-Wno-#pragma-messages) + + not work in Makefile generators, but work in other generators. + Now it is escaped correctly, making the behavior consistent + across generators. However, some projects may have tried to + workaround the original bug with code like:: + + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-\\#pragma-messages") + + This added the needed escape for Makefile generators but also + caused other generators to pass ``-Wno-\#pragma-messages`` to + the shell, which would work only in POSIX shells. + Unfortunately the escaping fix could not be made in a compatible + way so this platform- and generator-specific workaround no + longer works. Project code may test the :variable:`CMAKE_VERSION` + variable value to make the workaround version-specific too. + * Callbacks established by the :command:`variable_watch` command will no longer receive the ``ALLOWED_UNKNOWN_READ_ACCESS`` access type when the undocumented ``CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS`` variable is |