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a43e5e0ad5
Teach the Preprocess test to get, set, and then get the same value for the COMPILE_DEFINITIONS target property and verify that the value is not changed. This ensures the internal structured storage of the property value can reproduce the original string value.
285 lines
9.9 KiB
CMake
285 lines
9.9 KiB
CMake
cmake_minimum_required(VERSION 2.6)
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project(Preprocess)
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# This test is meant both as a test and as a reference for supported
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# syntax on native tool command lines.
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# Determine the build tool being used. Not all characters can be
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# escaped for all build tools. This test checks all characters known
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# to work with each tool and documents those known to not work.
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if("${CMAKE_GENERATOR}" MATCHES "Xcode")
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set(PP_XCODE 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "Visual Studio 6")
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set(PP_VS6 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "Unix Makefiles")
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set(PP_UMAKE 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "NMake Makefiles")
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set(PP_NMAKE 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "MinGW Makefiles")
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set(PP_MINGW 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "Borland Makefiles")
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set(PP_BORLAND 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "Watcom WMake")
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set(PP_WATCOM 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "Visual Studio 7$")
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set(PP_VS70 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "Visual Studio")
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set(PP_VS 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "Visual Studio 10")
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set(PP_VS100 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "Visual Studio 11")
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set(PP_VS110 1)
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endif()
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if("${CMAKE_GENERATOR}" MATCHES "Visual Studio 12")
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set(PP_VS120 1)
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endif()
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# Some tests below check the PP_* variables set above. They are meant
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# to test the case that the build tool is at fault. Other tests below
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# check the compiler that will be used when the compiler is at fault
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# (does not work even from a command shell).
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#-----------------------------------------------------------------------------
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# Construct a C-string literal to test passing through a definition on
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# the command line. We configure the value into a header so it can be
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# checked in the executable at runtime. The semicolon is handled
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# specially because it needs to be escaped in the COMPILE_DEFINITIONS
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# property value to avoid separating definitions but the string value
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# must not have it escaped inside the configured header.
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set(STRING_EXTRA "")
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if(NOT BORLAND AND NOT PP_VS70)
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# Borland, VS70 IDE: ;
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# The Borland compiler will simply not accept a non-escaped semicolon
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# on the command line. If it is escaped \; then the escape character
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# shows up in the preprocessing output too.
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#
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# The VS 7.0 IDE separates definitions on semicolons and commas with
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# no regard for quotes. Fortunately VS 7.1 and above are okay.
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set(SEMICOLON "\;")
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endif()
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if(NOT PP_VS6)
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# VS 6 IDE: spaces and '"', '$', or ';'
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# The project parser cannot handle spaces if there are quotes.
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# Since we test passing in a quoted string, we cannot have spaces.
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set(STRING_EXTRA "${STRING_EXTRA} ")
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if(NOT PP_BORLAND AND NOT PP_WATCOM)
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# Borland, WMake: multiple spaces
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# The make tool seems to remove extra whitespace from inside
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# quoted strings when passing to the compiler. It does not have
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# trouble passing to other tools, and the compiler may be directly
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# invoked from the command line.
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set(STRING_EXTRA "${STRING_EXTRA} ")
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endif()
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endif()
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if(NOT PP_VS)
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# VS: ,
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# Visual Studio will not accept a comma in the value of a definition.
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# The comma-separated list of PreprocessorDefinitions in the project
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# file seems to be parsed before the content of entries is examined.
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set(STRING_EXTRA "${STRING_EXTRA},")
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endif()
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if(NOT PP_MINGW)
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# MinGW: &
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# When inside -D"FOO=\"a & b\"" MinGW make wants -D"FOO=\"a "&" b\""
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# but it does not like quoted ampersand elsewhere.
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set(STRING_EXTRA "${STRING_EXTRA}&")
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endif()
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if(NOT PP_MINGW)
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# MinGW: |
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# When inside -D"FOO=\"a | b\"" MinGW make wants -D"FOO=\"a "|" b\""
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# but it does not like quoted pipe elsewhere.
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set(STRING_EXTRA "${STRING_EXTRA}|")
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endif()
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if(NOT PP_BORLAND AND NOT PP_MINGW AND NOT PP_NMAKE)
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# Borland, NMake, MinGW: ^
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# When inside -D"FOO=\"a ^ b\"" the make tools want -D"FOO=\"a "^" b\""
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# but do not like quoted carrot elsewhere. In NMake the non-quoted
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# syntax works when the flags are not in a make variable.
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set(STRING_EXTRA "${STRING_EXTRA}^")
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endif()
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if(NOT PP_BORLAND AND NOT PP_MINGW AND NOT PP_NMAKE)
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# Borland, MinGW: < >
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# Angle-brackets have funny behavior that is hard to escape.
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set(STRING_EXTRA "${STRING_EXTRA}<>")
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endif()
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set(EXPR_OP1 "/")
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if((NOT MSVC OR PP_NMAKE) AND
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NOT "${CMAKE_C_COMPILER_ID}" MATCHES "^(Intel)$")
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# MSVC cl, Intel icl: %
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# When the cl compiler is invoked from the command line then % must
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# be written %% (to distinguish from %ENV% syntax). However cl does
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# not seem to accept the syntax when it is invoked from inside a
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# make tool (nmake, mingw32-make, etc.). Instead the argument must
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# be placed inside a response file. Then cl accepts it because it
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# parses the response file as it would the normal windows command
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# line. Currently only NMake supports running cl with a response
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# file. Supporting other make tools would require CMake to generate
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# response files explicitly for each object file.
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#
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# When the icl compiler is invoked from the command line then % must
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# be written just '%'. However nmake requires '%%' except when using
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# response files. Currently we have no way to affect escaping based
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# on whether flags go in a response file, so we just have to skip it.
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set(STRING_EXTRA "${STRING_EXTRA}%")
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set(EXPR_OP1 "%")
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endif()
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# General: \"
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# Make tools do not reliably accept \\\" syntax:
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# - MinGW and MSYS make tools crash with \\\"
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# - Borland make actually wants a mis-matched quote \\"
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# or $(BACKSLASH)\" where BACKSLASH is a variable set to \\
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# - VS IDE gets confused about the bounds of the definition value \\\"
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# - NMake is okay with just \\\"
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if(PP_NMAKE OR PP_UMAKE)
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set(STRING_EXTRA "${STRING_EXTRA}\\\"")
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endif()
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# General: #
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# MSVC will not accept a # in the value of a string definition on the
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# command line. The character seems to be simply replaced by an
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# equals =. According to "cl -help" definitions may be specified by
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# -DMACRO#VALUE as well as -DMACRO=VALUE. It must be implemented by a
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# simple search-and-replace.
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#
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# The Borland compiler will parse both # and \# as just # but the make
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# tool seems to want \# sometimes and not others.
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#
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# Unix make does not like # in variable settings without extra
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# escaping. This could probably be fixed but since MSVC does not
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# support it and it is not an operator it is not worthwhile.
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# Compose the final test string.
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set(STRING_VALUE "hello`~!@$*)(_+-=}{][:'.?/${STRING_EXTRA}world")
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#-----------------------------------------------------------------------------
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# Function-style macro command-line support:
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# - Borland does not support
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# - MSVC does not support
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# - Watcom does not support
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# - GCC supports
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# Too few platforms support this to bother implementing.
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# People can just configure headers with the macros.
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#-----------------------------------------------------------------------------
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# Construct a sample expression to pass as a macro definition.
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set(EXPR "x*y+!(x==(y+1*2))*f(x${EXPR_OP1}2)")
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if(NOT WATCOM)
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# Watcom does not support - or / because it parses them as options.
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set(EXPR "${EXPR} + y/x-x")
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endif()
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#-----------------------------------------------------------------------------
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# Inform the test if the debug configuration is getting built.
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# The NDEBUG definition takes care of this for release.
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set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DPREPROCESS_DEBUG")
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set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DPREPROCESS_DEBUG")
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# Inform the test if it built from Xcode or VS6 IDE.
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if(PP_XCODE)
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set(PREPROCESS_XCODE 1)
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endif()
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if(PP_VS6)
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set(PREPROCESS_VS6 1)
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set(VS6 _vs6)
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endif()
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# Test old-style definitions.
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add_definitions(-DOLD_DEF -DOLD_EXPR=2)
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# Make sure old-style definitions are converted to directory property.
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set(OLD_DEFS_EXPECTED "OLD_DEF;OLD_EXPR=2")
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get_property(OLD_DEFS DIRECTORY PROPERTY COMPILE_DEFINITIONS)
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if(NOT "${OLD_DEFS}" STREQUAL "${OLD_DEFS_EXPECTED}")
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message(SEND_ERROR "add_definitions not converted to directory property!")
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endif()
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add_executable(Preprocess preprocess.c preprocess${VS6}.cxx)
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set(FILE_PATH "${Preprocess_SOURCE_DIR}/file_def.h")
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set(TARGET_PATH "${Preprocess_SOURCE_DIR}/target_def.h")
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# Set some definition properties.
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foreach(c "" "_DEBUG" "_RELEASE")
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set_property(
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DIRECTORY .
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APPEND PROPERTY COMPILE_DEFINITIONS${c} "DIRECTORY_DEF${c}"
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)
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set_property(
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TARGET Preprocess
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PROPERTY COMPILE_DEFINITIONS${c} "TARGET_DEF${c}"
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)
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set_property(
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SOURCE preprocess.c preprocess${VS6}.cxx
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PROPERTY COMPILE_DEFINITIONS${c} "FILE_DEF${c}"
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)
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endforeach()
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# Add definitions with values.
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if(NOT PREPROCESS_VS6)
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# The path might have spaces, which VS6 does not support.
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set(DEF_TARGET_PATH "TARGET_PATH=\"${TARGET_PATH}\"")
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set(DEF_FILE_PATH "FILE_PATH=\"${FILE_PATH}\"")
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endif()
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set_property(
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TARGET Preprocess
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APPEND PROPERTY COMPILE_DEFINITIONS
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"TARGET_STRING=\"${STRING_VALUE}${SEMICOLON}\""
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"TARGET_EXPR=${EXPR}"
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${DEF_TARGET_PATH}
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)
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set_property(
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SOURCE preprocess.c preprocess${VS6}.cxx
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APPEND PROPERTY COMPILE_DEFINITIONS
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"FILE_STRING=\"${STRING_VALUE}${SEMICOLON}\""
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"FILE_EXPR=${EXPR}"
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${DEF_FILE_PATH}
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)
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# Try reading and writing the property value to ensure the string is
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# preserved.
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get_property(defs1 TARGET Preprocess PROPERTY COMPILE_DEFINITIONS)
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set_property(TARGET Preprocess PROPERTY COMPILE_DEFINITIONS "${defs1}")
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get_property(defs2 TARGET Preprocess PROPERTY COMPILE_DEFINITIONS)
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if(NOT "x${defs1}" STREQUAL "x${defs2}")
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message(FATAL_ERROR "get/set/get COMPILE_DEFINITIONS round trip failed. "
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"First get:\n"
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" ${defs1}\n"
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"Second get:\n"
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" ${defs2}")
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endif()
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# Helper target for running test manually in build tree.
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add_custom_target(drive COMMAND Preprocess)
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# Configure the header file with the desired string value.
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if(SEMICOLON)
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set(STRING_VALUE "${STRING_VALUE};")
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endif()
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configure_file(${Preprocess_SOURCE_DIR}/preprocess.h.in
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${Preprocess_BINARY_DIR}/preprocess.h)
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include_directories(${Preprocess_BINARY_DIR})
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