Commit Graph

2141 Commits

Author SHA1 Message Date
Stephen Kelly 77d2646784 Allow generator expressions in LINK_INTERFACE_LIBRARIES.
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.
2013-01-10 23:04:06 +01:00
Stephen Kelly 93034a8350 Fix linking to imported libraries test.
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).
2013-01-10 17:13:19 +01:00
Brad King 378899ce87 Merge topic 'INTERFACE_POSITION_INDEPENDENT_CODE'
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.
2013-01-10 10:22:52 -05:00
Brad King 325e92fa22 Merge topic 'target-includes-defines-commands'
fc61a7a Add the target_compile_definitions command.
8a37ebe Add the target_include_directories command.
2013-01-10 10:22:46 -05:00
Brad King feb9ffb681 Merge topic 'qt4-target-depends'
c8ee07d FindQt4: Add INTERFACE includes and defines to Qt4 targets
2013-01-10 10:22:40 -05:00
Brad King 2341470673 Merge topic 'tll-IMPORTED-targets'
9cfe4f1 Allow target_link_libraries with IMPORTED targets.
2013-01-10 10:22:26 -05:00
Stephen Kelly 3581b96caa Process the INTERFACE_PIC property from linked dependencies
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.
2013-01-10 09:54:52 -05:00
Stephen Kelly fc61a7a746 Add the target_compile_definitions command.
This is a convenience API to populate the corresponding properties.
2013-01-10 09:46:58 -05:00
Stephen Kelly 8a37ebec78 Add the target_include_directories command.
This is a convenience API to populate the corresponding properties.
2013-01-10 09:46:57 -05:00
Stephen Kelly c8ee07d0ad FindQt4: Add INTERFACE includes and defines to Qt4 targets 2013-01-10 09:44:50 -05:00
Brad King a9f1bf4380 Merge topic 'LINK_LIBRARIES-property'
7653862 Add LINK_LIBRARIES property for direct target link dependencies
40cf3fb Make linking APIs aware of 'head' target
2013-01-08 14:32:41 -05:00
Brad King 6095e9fda6 Merge topic 'include-dirs-convenience'
9ce1b9e Add CMAKE_BUILD_INTERFACE_INCLUDES build-variable.
2013-01-08 14:32:28 -05:00
Brad King af770bc27e Merge topic 'deprecate-load_command'
09a0da7 Revert "load_command: Deprecate and document pending removal"
2013-01-08 14:31:57 -05:00
Stephen Kelly 9ce1b9ef29 Add CMAKE_BUILD_INTERFACE_INCLUDES build-variable.
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.
2013-01-08 14:14:27 -05:00
Stephen Kelly 9cfe4f1b76 Allow target_link_libraries with IMPORTED targets.
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.
2013-01-08 18:58:18 +01:00
Stephen Kelly 7653862798 Add LINK_LIBRARIES property for direct target link dependencies
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.
2013-01-08 09:02:43 -05:00
Brad King c2cde7f104 Merge topic 'osx-implicit-link-dirs'
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
2013-01-07 14:23:04 -05:00
Brad King db925e3532 Merge topic 'interface-includes-defines'
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
2013-01-07 14:20:13 -05:00
Brad King 9cbc637d78 Merge topic 'test-genex-custom-command'
119bf4b Add test for custom command with a genex referring to a target.
2013-01-07 14:19:51 -05:00
Brad King 0a097af097 Merge topic 'qt4-target-depends'
57a67bf Qt4: Add module dependencies to the IMPORTED targets
2013-01-07 14:19:36 -05:00
Stephen Kelly 119bf4bf7f Add test for custom command with a genex referring to a target.
This test failed before d8a59ea4 (Port cmGeneratorExpression to
cmTarget from cmGeneratorTarget, 2012-10-27), and passes after.
2013-01-07 14:03:51 -05:00
Stephen Kelly 57a67bf27e Qt4: Add module dependencies to the IMPORTED targets
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.
2013-01-07 14:00:47 -05:00
Brad King 09a0da7789 Revert "load_command: Deprecate and document pending removal"
This reverts commit d2d43986e7.
We will add a policy to remove the command more gracefully.
2013-01-07 10:31:07 -05:00
Stephen Kelly 894f52f32d Handle INTERFACE properties transitively for includes and defines.
Contextually, the behavior is as if the properties content from another
target is included in the string and then the result is evaluated.
2013-01-05 01:18:37 +01:00
Stephen Kelly b0c8f73eb6 Add the TARGET_NAME generator expression.
It will be used as a preprocessing marker.
2013-01-05 01:05:09 +01:00
Stephen Kelly b2f1700bc7 GenEx: Add expressions to specify build- or install-only values
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.
2013-01-05 01:05:08 +01:00
Brad King 2c4969a131 Merge topic 'fix-test-warnings'
b6346f2 Tests: Fix warning about unused variable
2013-01-03 13:53:30 -05:00
Brad King 9f8975a1a9 Merge topic 'include-dirs-debugging'
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
2013-01-03 13:53:21 -05:00
Brad King e2969c503b Merge topic 'fix-12904-avoid-overflow'
e378ba5 Add CTestLimitDashJ test (#12904)
3247806 CTest: Prevent creation of unbounded number of tests in ctest (#12904)
2013-01-03 13:53:18 -05:00
Stephen Kelly b6346f2556 Tests: Fix warning about unused variable
Resolve this warning:

 ".../Tests/CMakeCommands/target_link_libraries/depB.cpp", line 8: warning:
          variable "a" was declared but never referenced
    DepA a;
         ^
2013-01-03 13:50:55 -05:00
Stephen Kelly 0941d6232a Add a way to print the origins of used include directories. 2013-01-03 13:45:40 -05:00
Stephen Kelly 18a3195ad5 Keep track of INCLUDE_DIRECTORIES as a vector of structs.
The struct can keep track of where the include came from, which gives
us proper backtraces.
2013-01-03 13:45:40 -05:00
David Cole e378ba5f39 Add CTestLimitDashJ test (#12904)
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.
2013-01-03 13:37:50 -05:00
Stephen Kelly 3096202932 Make targets depend on the link interface of their dependees. 2013-01-03 13:31:50 -05:00
Brad King cc676c3a08 OS X: Detect implicit linker framework search paths
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.
2012-12-11 15:15:52 -05:00
Brad King 2dd67c7ea0 OS X: Detect implicit link directories on modern toolchains
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.
2012-12-11 15:15:51 -05:00
David Cole 28c6d32688 Merge topic 'skip-variable-re-expansion'
711b63f Add policy CMP0019 to skip include/link variable re-expansion
2012-12-11 13:44:08 -05:00
Brad King 711b63f7e0 Add policy CMP0019 to skip include/link variable re-expansion
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.
2012-12-07 09:51:19 -05:00
David Cole d842d90622 CMake: Stylistic changes and documentation tweaks
...for the contributed file and string TIMESTAMP sub-commands.
2012-12-05 10:39:11 -05:00
Nils Gladitz 711e2b3b5c CMake: Add TIMESTAMP subcommand to string and file commands 2012-12-05 10:39:10 -05:00
David Cole 2bb2745fa8 Merge topic 'fix-11575-add-wix-support-to-cpack'
a74bd47 CPack: Fix dashboard errors and warnings (#11575)
ad0f735 CPack: Fix dashboard warnings (#11575)
0729ad4 CPack: Fix dashboard errors (#11575)
85baac1 CPack: Add a WiX Generator (#11575)
2012-12-05 10:31:05 -05:00
Nils Gladitz 85baac1503 CPack: Add a WiX Generator (#11575)
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
2012-12-03 11:00:31 -05:00
Brad King ae951af859 Merge topic 'fix-cpack-tests'
587b7b6 Tests: Use the right path to CPack value for running CPack tests
2012-11-30 10:36:29 -05:00
Brad King 2cb3b55100 Merge topic 'fix-watcom-test-timeout'
2238505 Watcom: Avoid prompt from wmake about dll with no exports...
2012-11-30 10:36:15 -05:00
Brad King 1be60d6dc7 Merge topic 'multiarch-include'
da1d9ba Test find_path multiarch support (#13742)
b96f6fc Teach find_(path|file) about Linux multiarch (#13742)
2012-11-30 10:35:59 -05:00
David Cole 587b7b6f5e Tests: Use the right path to CPack value for running CPack tests
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.
2012-11-29 15:49:36 -05:00
David Cole 223850576b Watcom: Avoid prompt from wmake about dll with no exports...
...by simply building a STATIC lib for the test, instead of a
SHARED one. Fixes test timeout on the Watcom dashboards.
2012-11-28 12:11:52 -05:00
Brad King 5f30a56f29 Merge topic 'generator-expression-fixes'
b581be0 Genex: Don't segfault on $<FOO,>
07749e3 Genex: Ensure that $<0:...> has a parameter.
ee96dc7 Genex: Extract a method to parse parameters.
2012-11-27 13:35:02 -05:00
Stephen Kelly b581be0767 Genex: Don't segfault on $<FOO,>
Treat the comma as part of the identifier here. It will later not
resolve to a generator expression and the user gets a proper error
message.
2012-11-27 09:12:39 -05:00
Stephen Kelly 07749e3705 Genex: Ensure that $<0:...> has a parameter. 2012-11-27 09:12:39 -05:00