The Config and IMPORTED_ variants may also contain generator
expressions.
If 'the implementation is the interface', then the result of
evaluating the expressions at generate time is used to populate
the IMPORTED_LINK_INTERFACE_LIBRARIES property.
1) In the case of non-static libraries, this is fine because the
user still has the option to populate the LINK_INTERFACE_LIBRARIES
with generator expressions if that is what is wanted.
2) In the case of static libraries, this prevents a footgun,
enforcing that the interface and the implementation are really
the same.
Otherwise, the LINK_LIBRARIES could contain a generator
expression which is evaluated with a different context at build
time, and when used as an imported target. That would mean that the
result of evaluating the INTERFACE_LINK_LIBRARIES property for
a static library would not necessarily be the 'link implementation'.
For example:
add_library(libone STATIC libone.cpp)
add_library(libtwo STATIC libtwo.cpp)
add_library(libthree STATIC libthree.cpp)
target_link_libraries(libtwo
$<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,STATIC_LIBRARY>:libone>)
target_link_libraries(libthree libtwo)
If the LINK_LIBRARIES content was simply copied to the
IMPORTED_LINK_INTERFACE_LIBRARIES, then libthree links to libone, but
executables linking to libthree will not link to libone.
3) As the 'implementation is the interface' concept is to be
deprecated in the future anyway, this should be fine.
Make a C executable instead of attempting to make a C++ static
library (and not really succeeding). This was introduced in
commit 894f52f3 (Handle INTERFACE properties transitively for
includes and defines., 2012-09-23).
3581b96 Process the INTERFACE_PIC property from linked dependencies
042ecf0 Add API to calculate link-interface-dependent bool properties or error.
bf5ece5 Keep track of properties used to determine linker libraries.
This allows a dependee to inform a target that it should have its
POSITION_INDEPENDENT_CODE property set to ON, or OFF. The value of
the POSITION_INDEPENDENT_CODE property, if set, must be consistent
with any INTERFACE_POSITION_INDEPENDENT_CODE properties on dependees.
Add a test covering the consistency checks on platforms where they run.
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.
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} ${QT_QTCORE_LIBRARIES} )
when using the IMPORTED targets. Also populate the
IMPORTED_LINK_DEPENDENT_LIBRARIES property so CMake can help the linker
find shared library dependencies.
This is for specifying INCLUDE_DIRECTORIES relevant to the build-location
or the install location for example:
set_property(TARGET foo PROPERTY
INTERFACE_INCLUDE_DIRECTORIES
"$<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.
0941d62 Add a way to print the origins of used include directories.
18a3195 Keep track of INCLUDE_DIRECTORIES as a vector of structs.
76ea420 Use cmsys::auto_ptr to manage cmCompiledGeneratorExpressions
Resolve this warning:
".../Tests/CMakeCommands/target_link_libraries/depB.cpp", line 8: warning:
variable "a" was declared but never referenced
DepA a;
^
Add a test that verifies that when ctest -j 4 is called, at most, 4 tests
are executed at any one time.
The test works by running the same script as each of 100 tests. And then setting
up test properties for DEPENDS, RUN_SERIAL, PROCESSORS and COST in order to get
the tests to run in a semi-deterministic ordering, even in parallel. The script
writes a file, sleeps for a bit, and then deletes the file. In the meantime, it
counts files that currently exist, and emits output that triggers a test failure
if the count of files is ever greater than 4.
Prior to the commit that fixed bug #12904, this would result in a failed test
because the output of some of the tests would indicate that more than 4 tests
were running simultaneously.
Now that this issue is resolved, this test will help guarantee that it stays
resolved moving forward.
Previously we hard-coded a list of implicit framework directories but
did not account for CMAKE_OSX_SYSROOT or for changes to the list across
OS X versions. Instead we should automatically detect the framework
directories for the active toolchain.
The parent commit added the "-Wl,-v" option to ask "ld" to print its
implicit directories. It displays a block such as:
Framework search paths:
/...
Parse this block to extract the list of framework directories.
Detection may fail on toolchains that do not list their framework
directories, such as older OS X linkers. Always treat the paths
<sdk>/Library/Frameworks
<sdk>/System/Library/Frameworks
<sdk>/Network/Library/Frameworks # Older OS X only
/System/Library/Frameworks
as implicit. Note that /System/Library/Frameworks should always be
considered implicit so that frameworks CMake finds there will not
override the SDK copies.
We detect the implicit link directories for the toolchain by adding a
flag to get verbose output from the compiler front-end while linking the
ABI detection binary. Newer OS X toolchains based on Clang do not add
the implicit link directories with -L options to their internal
invocation of "ld". Instead they use a linker that comes with the
toolchain and is already configured with the proper directories.
Add the "-Wl,-v" option to ask "ld" to print its implicit directories.
It displays them in a block such as:
Library search paths:
/...
Parse this block to extract the implicit link directories.
While at it, remove the checks introduced by commit efaf335b (Skip
implicit link information on Xcode, 2009-07-23) and commit 5195a664
(Skip implicit link info for multiple OS X archs, 2009-09-22). Discard
the non-system link directories added by Xcode. Discard all detected
implicit libraries in the multi-architecture case but keep the
directories. The directories are still useful without the libraries
just to suppress addition of explicit -L options for them.
Historically CMake has always expanded ${} variable references in the
values given to include_directories(), link_directories(), and
link_libraries(). This has been unnecessary since general ${}
evaluation syntax was added to the language a LONG time ago, but has
remained for compatibility with VERY early CMake versions.
For a long time the re-expansion was a lightweight operation because it
was only processed once at the directory level and the fast-path of
cmMakefile::ExpandVariablesInString was usually taken because values did
not have any '$' in them. Then commit d899eb71 (Call
ExpandVariablesInString for each target's INCLUDE_DIRECTORIES,
2012-02-22) made the operation a bit heavier because the expansion is
now needed on a per-target basis. In the future we will support
generator expressions in INCLUDE_DIRECTORIES with $<> syntax, so the
fast-path in cmMakefile::ExpandVariablesInString will no longer be taken
and re-expansion will be very expensive.
Add policy CMP0019 to skip the re-expansion altogether in NEW behavior.
In OLD behavior perform the expansion but improve the fast-path
heuristic to match ${} but not $<>. If the policy is not set then warn
if expansion actually does anything. We expect this to be encountered
very rarely in practice.
This new CPack generator produces an *.msi installer file.
Requires having the WiX Toolset installed in order to work
properly.
Download the WiX Toolset installer "WiX36.exe" here:
http://wix.codeplex.com/releases/view/93929
These tests were not running properly on Visual Studio or
Xcode dashboards before this commit because of the "Debug"
or "Release" sub-directory. The scripts already have
CMAKE_CPACK_COMMAND since the correct CMake executable is
used to run the scripts, so just use that, rather than
passing down an incorrect path to the CPack executable.
a41d3a4 ExternalProjectUpdateTest: Only support Git 1.6.5 and greater.
de760c1 ExternalProject: Verify when a fetch occurs during update test.
0a34433 ExternalProject: Make sure the ExternalProjectUpdate setup is available.
9b66c8f ExternalProject: Always do a git fetch for a remote ref.
2619f4d ExternalProject: Add tests for UPDATE_COMMAND.
378aa12 ExternalProject: Do smoke tests for Git Tutorial builds.
d075829 ExternalProject: Only run 'git fetch' when required.
The performance feature of only performing a git fetch when needed
during the ExternalProject update step is verified during the test.
A fetch is identified by removing the FETCH_HEAD file and checking for
its reincarnation.
This prepares the numberous tests that occur in the ExternalProjectUpdate
test. The tests were passing previously because a fresh build was not performed.
Tests are added for UPDATE_COMMAND to ensure it is working properly. Testing
infrastructure is added along with tests for Git, but tests for other version
control systems could easily be added in the future.
Build a shared library and an executable linking to it inside the inner
test. Set LINK_DEPENDS_NO_SHARED on the executable. Add a custom
target to compare the output file times. Verify that on the first build
the executable is newer than the library. Then modify a library source
file. Verify that on the second build the library is newer because the
executable did not have a dependency to re-link.
This command works only when building projects using the same
architecture as the running CMake binary. Since it was introduced
CMake has learned macro() and function() to add commands, and the
execute_process() command to launch advanced external computations.
Add a RunCMake.load_command test to verify the warning appears.
828d4f5 Add several get_property() tests
82106e3 GetProperty test: move doc property tests into main process
56125a3 list: add tests for CMP0007 behavior
48ed48f Add test to secure the file(GLOB empty) behavior.
c2a6cb6 file: remove dead code
07251a8 Consolidate list() argument count testing
1b078c3 Add tests for list() invalid arguments
f560977 Add tests for list() argument count
d211e5d CMakeTests: allow to call the check_cmake_test macro with a given file
The code handling IMPLICIT_DEPENDS was only able to track a single file,
the latest file replaced earlier files in the list.
The documentation now mentions that the language has to be prefixed to
every file and the test now uses two implicit dependencies, where only
the second is modified to trigger re-running of the custom command.
Alex
Inspired-by: Michael Wild <themiwi@users.sourceforge.net>
The file command requires at least two arguments, so guarding the GLOB and
MAKE_DIRECTORY command is not necessary. Changed it for an assert to keep the
protection.
66759ee find_library: Optionally consider all names in each directory
9cb68b1 find_library: Generalize helper macro in test case
b64dd76 find_library: Simplify framework search logic
531c71b find_library: Refactor internal name iteration
For things where we may have 2 major versions of the same software
installed in parallel (think of Qt and Python) make sure our version
selection gets this right.
e386992 GexEx: Validate Target names and property names differently.
95d590d GenEx: Create cmGeneratorTargets for imported targets.
0442104 GenEx: Add an accessor for imported targets in a makefile.
It should be possible for example to do this:
"$<AND:${FOO},$<BOOL:${TGT}>,$<BOOL:$<TARGET_PROPERTY:${TGT},PROP>"
such that it works simliarly to the C code:
if (foo && tgt && tgt->prop())
{
}
The example of generator expression code is a little bit contrived as
it could be written other ways with the same functionality. Nevertheless,
as these cases already work and are intentional, test for them.
79edd00 GenEx: Fix reporting about not-found include directories and libraries.
f7ef32b GenEx: Replace some failing tests with Borland and NMake makefiles.
fd59b10 GenEx: Add some more asserts to verify code-sanity.
6dd2b36 GenEx: Break if there are no more commas in the container
e7230c7 GenEx: Fix termination bugs in generator expression parser.
145a4af GenEx: Test the use of generator expressions to generate lists.
e2d141d GenEx: Parse colon after arguments separator colon specially.
995a35f CTest: add a check with a quoted memory checker
de8bffc CTest: add a test for CTEST_CUSTOM_MEMCHECK_IGNORE
d26c9b6 CTest: improve memory checker type detection
fcae1da CTest: add tests that simulate memcheck runs
6187876 CTest: fix pre and post test commands with spaces
95bc8aa CTest: fix usage of memory checker with spaces in path
This fixes a regression introduced in commit 290e92ad (Move
GetIncludeDirectories to cmGeneratorTarget, 2012-09-16) which loops over
cmGeneratorTargets before they get created, so the container is empty.
Content which is incomplete as a generator expression could cause
segfaults by advancing an iterator beyond end() and dereferencing
it. Such incomplete generator expressions should be treated as
plain text instead.
The rationale is similar to that in commit b3d8f5da (GenEx: Parse comma
after colon tokens specially, 2012-10-04), in that colon tokens should
not be parsed as identifier-argument delimiters after the first colon.
Otherwise the comma is treated as plain text by ParseContent.
$<STREQUAL:,> should be valid and true.
$<STREQUAL:,something> should be valid and false.
$<STREQUAL:,,> should be non-valid as it is 3 parameters.
$<STREQUAL:something,,> should be non-valid as it is 3 parameters.
Additionally, this allows reporting the correct error for other
expressions. For example $<TARGET_PROPERTY:,> should be invalid
because it has an empty target and empty property. It shouldn't
attempt to read the property ',' on the 'implicit this' target.
80112da Merge topic 'AutomocUseTargetProperties' into export-sets
955b966 exports: add a test for exporting dependent targets
6f50a04 exports: define a CMAKE_FIND_PACKAGE_NAME var set by find_package()
0cfd055 exports: move the handling of missing targets into subclasses
190f2c8 exports: fix build with MSVC6
8b5f448 exports: first try at error handling if a target is missing
87f4c01 exports: accept a missing target if it is exported exactly once
999061a exports: store pointers to all installations of each export set
64b3a6c exports: cmGlobalGenerator::ExportSets destructor will clear it
81cdab5 exports: Hold an ExportSet pointer in cm*Export*Generator
5c898fb exports: Add cmExportSetMap class
d13ec1a exports: Create class cmExportSet
4e2347c exports: Rename cmGlobalGenerator::AddTargetToExport{s,}
e846e70 exports: Remove cmTargetExport constructor
81c66c8 exports: Move cmTargetExport to a dedicated header file
ae4ab62 find_package: add support for a <package>_NOT_FOUND_MESSAGE variable
...
2ccca05 Run PDBDirectoryAndName test on MSVC and Intel
efc83b3 Document that PDB_(NAME|OUTPUT_DIRECTORY) are ignored for VS 6
b294457 Verify that PDB_(NAME|OUTPUT_DIRECTORY) are honored in test
3f60dbf Add PDB_OUTPUT_DIRECTORY and PDB_NAME target properties (#10830)
Move it out of the condition that also accepts MinGW/MSYS.
Teach the test to allow the Intel for Windows compiler but
do not verify the results because the compiler does not
seem to write PDB output in all cases.
083de7e Process generator expressions in the COMPILE_DEFINITIONS target property.
08cb4fa Process generator expressions in the INCLUDE_DIRECTORIES property.
0ef091d Early return if there is no target.
eb250cd Add a self-reference check for target properties.
7e80747 Add API to check that dependent target properties form a DAG.
239ac84 Add a generator expression for target properties.
e028381 Extend the generator expression language with more logic.
b8e61d6 Refactor GetCompileDefinitions a bit.
2c2b25b Return a std::string from GetCompileDefinitions.
b7e48e0 Add an AppendDefines std::string overload.
9a16087 Convert paths in INCLUDE_DIRECTORIES property to Unix slashes.
4557c8d Don't prepend a path before generator expressions in include_directories.
c6abc41 Add include guard for cmGeneratorExpression.
0ff4e3f Port remaining code to GetCompileDefinitions().
f178d53 Fix indentation in the code blocks generator.
Generator expressions for comparing strings, evaluating
strings as booleans, and for creating literal right-angle-brackets
and commas are added. Those may be needed in some cases
where they appear in literals.
When more than one value is given to the NAMES option this command by
default will consider one name at a time and search every directory for
it. Add a NAMES_PER_DIR option to tell this command to consider one
directory at a time and search for all names in it.
In Tests/CMakeOnly/find_library/CMakeLists.txt generalize the
test_find_library macro and move the lib64 substitution logic to a new
test_find_library_subst macro.
This enables changing the name and output folder of the debug symbol
files produced by MS compilers.
Inspired-by: Thomas Bernard <thomas.bernard@ipetronik.com>
df92864 OS X: Ignore MACOSX_DEPLOYMENT_TARGET during Xcode compiler id
e7e613e OS X: Teach deployment target sanity check about SDK names
43b7479 OS X: Further improve default CMAKE_OSX_SYSROOT selection
2690738 OS X: If CMAKE_OSX_SYSROOT is already set do not compute default
7995722 OS X: Simplify selection of CMAKE_OSX_ARCHITECTURES
1786b12 OS X: Allow CMAKE_OSX_SYSROOT to be a logical SDK name
242f673 Tests/Assembler: Use CMAKE_OSX_SYSROOT to generate .s file
a1c032b bootstrap: Suppress CMAKE_OSX_SYSROOT if CFLAGS have -isysroot
230ea21 OS X: Improve default CMAKE_OSX_SYSROOT selection
a0a0877 OS X: Always generate -isysroot if any SDK is in use
33a60e6 Xcode: Remove unused code reading CMAKE_OSX_SYSROOT_DEFAULT
On OS X if the user-provided flags do not include -isysroot and
CMAKE_OSX_SYSROOT is defined then add the proper -isysroot flag to the C
compiler invocation we use to generate the .s file.
Make the EXPECTED_HASH option take only a single value instead of two to
avoid handling sub-keyword arguments. This is also consistent with
URL_HASH in ExternalProject.
The expressions may be parsed and then cached and evaluated multiple
times. They are evaluated lazily so that literals such as ',' can be
treated as universal parameter separators, and can be processed from
results without appearing literally, and without interfering with the
parsing/evaluation of the entire expression.
Extend the number of components tested by
if(... VERSION_LESS ...)
if(... VERSION_EQUAL ...)
if(... VERSION_GREATER ...)
from 4 to 8. The latter is a more extreme maximum.
In commit 485a940e (VS: Simplify MSVC version reporting, 2012-08-23) we
accidentally flipped the 0/1 values of MSVC_IDE. Flip them back and
teach the CheckCompilerRelatedVariables test to check the variable.
e5fee8a Store ABI detection results in compiler information files
3df81b4 Move CMAKE_<LANG>_COMPILER_WORKS to compiler information files
7195aca Make platform information files specific to the CMake version
403ead6 Document CMAKE_<LANG>_COMPILER_(ID|VERSION) values
8be51f6 Test variables CMAKE_(C|CXX|Fortran)_COMPILER(|_ID|_VERSION)
ec22a9b Cleanly enable a language in multiple subdirectories
66cb335 VS: Detect the compiler id and tool location
89595d6 VS10: Define CMAKE_VS_PLATFORM_TOOLSET variable
965a69d Xcode: Detect the compiler id and tool location
9a9e1ee CMakeDetermineCompilerId: Prepare to detect IDE compiler id
b8b5c83 Re-order C/C++/Fortran compiler determination logic
f0a1065 Rename files from main.cpp to more meaningful names.
ca7fb14 Fix the test setting COMPILE_DEFINITIONS target property
733deb6 Fix CompileDefinitions test on Visual Studio.
3dae652 Don't duplicate -D defines sent to the compiler.
At the top of a build tree we configure inside the CMakeFiles directory
files such as "CMakeSystem.cmake" and "CMake<lang>Compiler.cmake" to
save information detected about the system and compilers in use. The
method of detection and the exact results store varies across CMake
versions as things improve. This leads to problems when loading files
configured by a different version of CMake. Previously we ignored such
existing files only if the major.minor part of the CMake version
component changed, and depended on the CMakeCache.txt to tell us the
last version of CMake that wrote the files. This led to problems if the
user deletes the CMakeCache.txt or we add required information to the
files in a patch-level release of CMake (still a "feature point" release
by modern CMake versioning convention).
Ensure that we always have version-consistent platform information files
by storing them in a subdirectory named with the CMake version. Every
version of CMake will do its own system and compiler identification
checks even when a build tree has already been configured by another
version of CMake. Stored results will not clobber those from other
versions of CMake which may be run again on the same tree in the future.
Loaded results will match what the system and language modules expect.
Rename the undocumented variable CMAKE_PLATFORM_ROOT_BIN to
CMAKE_PLATFORM_INFO_DIR to clarify its purpose. The new variable points
at the version-specific directory while the old variable did not.
Because the main file for the dummy-executable and the actual compile
test were both called main.cpp, they were overwriting each other during
in-source builds.
There is no need to do so. Be consistent with include directories and
ensure uniqueness.
This requires changing the API of the cmLocalGenerator::AppendDefines
method, and changing the generators to match.
The test unfortunately can't test for uniqueness, but it at least verifies
that nothing gets lost.
Stephen Kelly
Brad King
David Cole
Nils Gladitz
Petr Kmoch
Matt McCormick
Alex Neundorf
Rolf Eike Beer
Amine Chadly
Aleksey Avdeev
Yuchen Deng
Bill Hoffman