This makes
set(CMAKE_BUILD_INTERFACE_INCLUDES ON)
add the equivalent of
set_property(TARGET tgt APPEND PROPERTY
INTERFACE_INCLUDE_DIRECTORIES
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR};${CMAKE_CURRENT_BINARY_DIR}>
)
to every target.
If the headers are in CMAKE_CURRENT_SOURCE_DIR, and the generated headers
are in CMAKE_CURRENT_BINARY_DIR, this is a convenient way to build a target
bar, which depends on foo, just by using target_link_libraries() and adding
the INTERFACE_INCLUDE_DIRECTORIES to the INCLUDE_DIRECTORIES of the target
being linked. There will be more-convenient porcelain API to consume the
property in the future.
This makes it possible to use:
target_link_libraries(foo LINK_INTERFACE_LIBRARIES bar)
where foo is an IMPORTED target. Other tll() signatures are not
allowed.
Previously we kept direct link dependencies in OriginalLinkLibraries.
The property exposes the information in the CMake language through the
get/set_property commands. We preserve the OriginalLinkLibraries value
internally to support old APIs like that for CMP0003's OLD behavior, but
the property is now authoritative. This follows up from commit d5cf644a
(Split link information processing into two steps, 2012-11-01).
This will be used later to populate the link interface properties when
exporting targets, and will later allow use of generator expressions
when linking to libraries with target_link_libraries.
Also make targets depend on the (config-specific) union of dependencies.
CMake now allows linking to dependencies or not depending on the config.
However, generated build systems are not all capable of processing
config-specific dependencies, so the targets depend on the union of
dependencies for all configs.
The 'head' is the dependent target to be linked with the current target.
It will be used to evaluate generator expressions with proper handling
of mapped configurations and is used as the source target of properties.
This requires that memoization is done with a key of a pair of target
and config, instead of just config, because now the result also depends
on the target. Removing the memoization entirely is not an option
because it slows cmake down considerably.
Extract upstream KWSys using the following shell commands.
$ git archive --prefix=upstream-kwsys/ fc60c8b8 | tar x
$ git shortlog --no-merges --abbrev=8 --format='%h %s' 8ce09af5..fc60c8b8
Brad King (3):
cb5f835f SystemTools: Fix MakeDirectory with colon in path
1643507a IOStream: Fix check for compiler 'long long' support
34177aec SystemTools: Fix MakeDirectory after recent cleanup
Rolf Eike Beer (24):
4da9894d SystemInformation: Clean up QuerySolarisInfo()
01392358 SystemInformation: don't attribute i386 Solaris systems to Sun
3db65ac1 SystemInformation: wrap the call to CPUID in a function
61bd9b42 SystemInformation: use the __cpuid compiler intrinsic if present
5932e7c0 SystemInformation: query memory size on Cygwin using sysconf()
ea5612ed SystemInformation: count memory with _SC_PAGESIZE and _SC_PHYS_PAGES
3aca6642 SystemInformation: query memory size, CPU count, and CPU speed on BSD
3572c54d SystemInformation: count CPUs on HP-UX
e6771b34 SystemInformation: determine CPU type on HP-UX
640210e5 SystemInformation: use /proc/cpuinfo only when present
5bdcfd10 SystemInformation: query total memory on AIX
de69d547 SystemInformation: use intrinsic for RDTSC if supported
9808d4e7 SystemInformation: get CPU speed on Windows when RDTSC fails
f4c625b5 tests: avoid truncation of testSystemInformation output in CDash
03d6fbe5 SystemInformation: get x86 CPU features from /proc/cpuinfo
f8e917c1 SystemInformation: remove the #define CPUID_INSTRUCTION
59c4b5c5 SystemInformation: split Windows code out of QueryMemory()
200ee91f SystemInformation: split HP-UX code out of QueryMemory()
88217703 SystemInformation: split Linux code out of QueryMemory()
9e317872 SystemInformation: split AIX code out of QueryMemory()
349cee5b SystemInformation: remove useless zeroing from QueryMemory()
7271926e SystemInformation: split Cygwin code out of QueryMemory()
6da78ad1 SystemInformation: make QueryMemory() return bool
182179e9 Haiku no longer defines __BEOS__
Stephen Kelly (1):
247b8a3c SystemTools: Rename MakeCnidentifier() to MakeCidentifier()
Change-Id: Ib95b5bddab7ecc0a4025ab29792426acf57e5623
cc676c3 OS X: Detect implicit linker framework search paths
2dd67c7 OS X: Detect implicit link directories on modern toolchains
ba58d0c OS X: Link with all framework search paths, not just the last
894f52f Handle INTERFACE properties transitively for includes and defines.
f5b1980 Populate the ExportedTargets member early in GenerateMainFile
c67b812 Make cycles in target properties ignored, not an error.
d0f950f Use mapped config properties to evaluate $<CONFIG>
26def17 Make all relevant targets available in the genex context.
0c657dc Add API to populate INTERFACE properties in exported targets.
e04f737 Add API to extract target names from a genex string.
b0c8f73 Add the TARGET_NAME generator expression.
77475fe Allow generator expressions to require literals.
b2f1700 GenEx: Add expressions to specify build- or install-only values
This means for example, that consumers can use:
target_link_libraries(foo ${QT_QTGUI_LIBRARIES})
instead of also needing to specify all 'public' dependencies:
target_link_libraries(foo ${QT_QTGUI_LIBRARIES} ${QT_QTCORE_LIBRARIES} )
when using the IMPORTED targets. Also populate the
IMPORTED_LINK_DEPENDENT_LIBRARIES property so CMake can help the linker
find shared library dependencies.
Since commit 9a6ff950 (Fix for bug where VS2010 did not use .obj files as
part of the build, 2011-04-01) and commit b291d9e7 (VS10: Fix external
objects generated outside target, 2012-03-19) we try to detect whether an
external object file is also a custom command output in the same target.
This is because VS10 includes .obj custom command outputs on the link line
by default.
VS 11 supports a "<LinkObjects ...>false</LinkObjects>" setting in custom
command rules to tell VS not to link the outputs. From the VS help:
Specify whether the Inputs and output files with specific extensions (.obj,
.lib, .res, .rsc) are passed to the linker.
Treat all external object files the same and add "<Object>" settings for them.
The member variable is checked to determine whether to call
HandleMissingTarget(). As that could be called during the loop in
the comming commits, ensure that it contains all targets being
exported.
Constructs such as these are an error as they are direct self-references:
set_property(TARGET foo APPEND PROPERTY
INCLUDE_DIRECTORIES $<TARGET_PROPERTY:foo,INCLUDE_DIRECTORIES>)
set_property(TARGET foo APPEND PROPERTY
INCLUDE_DIRECTORIES $<TARGET_PROPERTY:INCLUDE_DIRECTORIES>)
However, this is an indirect self-reference in a cycle, and not an error:
set_property(TARGET foo APPEND PROPERTY
INCLUDE_DIRECTORIES $<TARGET_PROPERTY:bar,INCLUDE_DIRECTORIES>)
set_property(TARGET bar APPEND PROPERTY
INCLUDE_DIRECTORIES $<TARGET_PROPERTY:foo,INCLUDE_DIRECTORIES>)
The TARGET_NAME expression, which requires a literal, provides
target names. $<TARGET_PROPERTY:tgt,prop> also provides target
names in the cases where tgt is a literal, so that TARGET_NAME is
not needed then in addition.
This is for specifying INCLUDE_DIRECTORIES relevant to the build-location
or the install location for example:
set_property(TARGET foo PROPERTY
INTERFACE_INCLUDE_DIRECTORIES
"$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR};${CMAKE_CURRENT_SOURCE_DIR}>"
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_PREFIX}/include>"
)
A 'bar' target can then use:
set_property(TARGET bar PROPERTY
INCLUDE_DIRECTORIES
"$<TARGET_PROPERTY:foo,INTERFACE_INCLUDE_DIRECTORIES>"
)
and it will work whether foo is in the same project, or an imported target
from an installation location, or an imported target from a build location
generated by the export() command.
Because the generator expressions are only evaluated at build-time, these
new expressions are equivalent to the ZeroNode and OneNode.
The GeneratorExpression test is split into parts. Some shells can't run
the custom command as it is getting too long.
Xcode and VS <= 7.1 will not build targets that have no source files
besides $<TARGET_OBJECTS:...>. Suggest in the documentation that
projects always add at least one real source file.
Brad King
Stephen Kelly
KWSys Robot
Rolf Eike Beer
Clinton Stimpson
Peter Kümmel