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Ninja: Add dependencies on system-provided header files (#14914)

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When system-provided packages are upgraded we must re-compile sources
depending on their headers.  Use `-MD` instead of `-MMD` so that the
generated depfiles do not exclude system headers.

Suggested-by: Jussi Judin
This commit is contained in:
Brad King 2016-03-15 10:15:53 -04:00
parent 1d4ab06a70
commit 6d74e7870b
5 changed files with 9 additions and 4 deletions
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5
Help/release/dev/ninja-depfile-system-headers.rst Normal file
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@ -0,0 +1,5 @@
ninja-depfile-system-headers
----------------------------
* The :generator:`Ninja` generator now includes system header files in build
dependencies to ensure correct re-builds when system packages are updated.

2
Modules/Compiler/GNU.cmake
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@ -41,7 +41,7 @@ macro(__compiler_gnu lang)
# distcc does not transform -o to -MT when invoking the preprocessor
# internally, as it ought to. Work around this bug by setting -MT here
# even though it isn't strictly necessary.
set(CMAKE_DEPFILE_FLAGS_${lang} "-MMD -MT <OBJECT> -MF <DEPFILE>")
set(CMAKE_DEPFILE_FLAGS_${lang} "-MD -MT <OBJECT> -MF <DEPFILE>")
endif()
# Initial configuration flags.

2
Modules/Compiler/Intel-C.cmake
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@ -6,7 +6,7 @@ set(CMAKE_C_FLAGS_MINSIZEREL_INIT "-Os -DNDEBUG")
set(CMAKE_C_FLAGS_RELEASE_INIT "-O3 -DNDEBUG")
set(CMAKE_C_FLAGS_RELWITHDEBINFO_INIT "-O2 -g -DNDEBUG")
set(CMAKE_DEPFILE_FLAGS_C "-MMD -MT <OBJECT> -MF <DEPFILE>")
set(CMAKE_DEPFILE_FLAGS_C "-MD -MT <OBJECT> -MF <DEPFILE>")
set(CMAKE_C_CREATE_PREPROCESSED_SOURCE "<CMAKE_C_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
set(CMAKE_C_CREATE_ASSEMBLY_SOURCE "<CMAKE_C_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")

2
Modules/Compiler/Intel-CXX.cmake
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@ -6,7 +6,7 @@ set(CMAKE_CXX_FLAGS_MINSIZEREL_INIT "-Os -DNDEBUG")
set(CMAKE_CXX_FLAGS_RELEASE_INIT "-O3 -DNDEBUG")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT "-O2 -g -DNDEBUG")
set(CMAKE_DEPFILE_FLAGS_CXX "-MMD -MT <OBJECT> -MF <DEPFILE>")
set(CMAKE_DEPFILE_FLAGS_CXX "-MD -MT <OBJECT> -MF <DEPFILE>")
set(CMAKE_CXX_CREATE_PREPROCESSED_SOURCE "<CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
set(CMAKE_CXX_CREATE_ASSEMBLY_SOURCE "<CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")

2
Modules/Compiler/QCC.cmake
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@ -20,5 +20,5 @@ macro(__compiler_qcc lang)
set(CMAKE_${lang}_COMPILE_OPTIONS_TARGET "-V")
set(CMAKE_INCLUDE_SYSTEM_FLAG_${lang} "-Wp,-isystem,")
set(CMAKE_DEPFILE_FLAGS_${lang} "-Wc,-MMD,<DEPFILE>,-MT,<OBJECT>,-MF,<DEPFILE>")
set(CMAKE_DEPFILE_FLAGS_${lang} "-Wc,-MD,<DEPFILE>,-MT,<OBJECT>,-MF,<DEPFILE>")
endmacro()