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Ensure definitions from cmake files that make use of generator expressions

Browse source 
(such as UseQt4.cmake) are retained but do not cause a empty "-D" to be
output when the generator evaluates to the empty string.
Fixes debug build failure on Linux using Qt4/tools/WITH_PCH.

--HG--
branch : develop
This commit is contained in:
Gary Preston 2016-02-18 13:53:14 +00:00
parent c2084480c8
commit b193faa426
1 changed files with 15 additions and 13 deletions
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28
code/CMakeModules/PCHSupport.cmake
View file

@ -56,33 +56,37 @@ MACRO(PCH_SET_COMPILE_FLAGS _target)
LIST(APPEND _FLAGS " -I\"${item}\"")
ENDFOREACH()
# NOTE: As cmake files (eg FindQT4) may now use generator expressions around their defines that evaluate
# to an empty string, wrap all "items" in an expression that outputs a -D IFF the generated
# expression is not empty.
# Required for CMake 2.6
SET(GLOBAL_DEFINITIONS)
GET_DIRECTORY_PROPERTY(DEFINITIONS COMPILE_DEFINITIONS)
IF(DEFINITIONS)
FOREACH(item ${DEFINITIONS})
LIST(APPEND GLOBAL_DEFINITIONS " -D${item}")
LIST(APPEND GLOBAL_DEFINITIONS "$<$<BOOL:${item}>:-D$<JOIN:${item},-D>>")
ENDFOREACH()
ENDIF()
GET_DIRECTORY_PROPERTY(DEFINITIONS COMPILE_DEFINITIONS_${_UPPER_BUILD})
IF(DEFINITIONS)
FOREACH(item ${DEFINITIONS})
LIST(APPEND GLOBAL_DEFINITIONS " -D${item}")
LIST(APPEND GLOBAL_DEFINITIONS "$<$<BOOL:${item}>:-D$<JOIN:${item},-D>>")
ENDFOREACH()
ENDIF()
GET_DIRECTORY_PROPERTY(DEFINITIONS DIRECTORY ${CMAKE_SOURCE_DIR} COMPILE_DEFINITIONS)
IF(DEFINITIONS)
FOREACH(item ${DEFINITIONS})
LIST(APPEND GLOBAL_DEFINITIONS " -D${item}")
LIST(APPEND GLOBAL_DEFINITIONS "$<$<BOOL:${item}>:-D$<JOIN:${item},-D>>")
ENDFOREACH()
ENDIF()
GET_DIRECTORY_PROPERTY(DEFINITIONS DIRECTORY ${CMAKE_SOURCE_DIR} COMPILE_DEFINITIONS_${_UPPER_BUILD})
IF(DEFINITIONS)
FOREACH(item ${DEFINITIONS})
LIST(APPEND GLOBAL_DEFINITIONS " -D${item}")
LIST(APPEND GLOBAL_DEFINITIONS "$<$<BOOL:${item}>:-D$<JOIN:${item},-D>>")
ENDFOREACH()
ENDIF()
@ -106,14 +110,14 @@ MACRO(PCH_SET_COMPILE_FLAGS _target)
GET_TARGET_PROPERTY(DEFINITIONS ${_target} COMPILE_DEFINITIONS)
IF(DEFINITIONS)
FOREACH(item ${DEFINITIONS})
LIST(APPEND GLOBAL_DEFINITIONS " -D${item}")
LIST(APPEND GLOBAL_DEFINITIONS "$<$<BOOL:${item}>:-D$<JOIN:${item},-D>>")
ENDFOREACH()
ENDIF()
GET_TARGET_PROPERTY(DEFINITIONS ${_target} COMPILE_DEFINITIONS_${_UPPER_BUILD})
IF(DEFINITIONS)
FOREACH(item ${DEFINITIONS})
LIST(APPEND GLOBAL_DEFINITIONS " -D${item}")
LIST(APPEND GLOBAL_DEFINITIONS "$<$<BOOL:${item}>:-D$<JOIN:${item},-D>>")
ENDFOREACH()
ENDIF()
@ -135,10 +139,7 @@ MACRO(PCH_SET_COMPILE_FLAGS _target)
IF(_DEFINITIONS)
FOREACH(item ${_DEFINITIONS})
# don't use dynamic expressions
IF(NOT item MATCHES "\\$<")
LIST(APPEND GLOBAL_DEFINITIONS " -D${item}")
ENDIF()
LIST(APPEND GLOBAL_DEFINITIONS "$<$<BOOL:${item}>:-D$<JOIN:${item},-D>>")
ENDFOREACH()
ENDIF()
ENDIF()
@ -149,7 +150,7 @@ MACRO(PCH_SET_COMPILE_FLAGS _target)
IF(GLOBAL_DEFINITIONS MATCHES "QT_CORE_LIB")
# Hack to define missing QT_NO_DEBUG with Qt 5.2
IF(_UPPER_BUILD STREQUAL "RELEASE")
LIST(APPEND GLOBAL_DEFINITIONS " -DQT_NO_DEBUG")
LIST(APPEND GLOBAL_DEFINITIONS "-DQT_NO_DEBUG")
ENDIF()
# Qt5_POSITION_INDEPENDENT_CODE should be true if Qt was compiled with PIC
@ -162,8 +163,6 @@ MACRO(PCH_SET_COMPILE_FLAGS _target)
ENDIF()
ENDIF()
LIST(APPEND _FLAGS " ${GLOBAL_DEFINITIONS}")
IF(CMAKE_VERSION VERSION_LESS "3.3.0")
GET_DIRECTORY_PROPERTY(_directory_flags DEFINITIONS)
GET_DIRECTORY_PROPERTY(_directory_definitions DIRECTORY ${CMAKE_SOURCE_DIR} DEFINITIONS)
@ -180,6 +179,9 @@ MACRO(PCH_SET_COMPILE_FLAGS _target)
SEPARATE_ARGUMENTS(_FLAGS)
ENDIF()
# Already in list form and items may contain non-leading spaces that should not be split on
LIST(INSERT _FLAGS 0 "${GLOBAL_DEFINITIONS}")
IF(CLANG)
# Determining all architectures and get common flags
SET(_ARCH_NEXT)