Commit Graph

60 Commits

Author SHA1 Message Date
Brad King 0778016a0b Tests: Do not try to use invalid "ld -v" flag on Solaris
Fix the CMakeCommands.target_link_libraries test to use "-V" instead of
"-v" on Solaris because the latter does not exist.
2015-03-31 11:21:36 -04:00
Stephen Kelly b734fa4471 Genex: Allow COMPILE_LANGUAGE when processing include directories.
Issue an error if this is encountered by an IDE generator.
2015-03-09 20:49:17 +01:00
Stephen Kelly 0b945ea9a6 Genex: Allow COMPILE_LANGUAGE when processing compile definitions.
Issue an error if this is encountered by an IDE generator.
2015-03-09 20:49:16 +01:00
Stephen Kelly 5c559f1113 Genex: Enable use of COMPILE_LANGUAGE for compile options.
Follow-ups will allow the use of the generator expression
for compile definitions and include directories for non-IDE
generators.
2015-03-09 20:48:57 +01:00
Stephen Kelly e0890d03a4 Features: Extend concept to C language.
Add properties and variables corresponding to CXX equivalents.

Add features for c_function_prototypes (C90), c_restrict (C99),
c_variadic_macros (C99) and c_static_assert (C11). This feature
set can be extended later.

Add a <PREFIX>_RESTRICT symbol define to WriteCompilerDetectionHeader
to conditionally represent the c_restrict feature.
2014-05-15 00:15:18 +02:00
Stephen Kelly 447fbb3fac Tests: Execute compile features tests unconditionally.
Conditionally create a dummy test if there are no known features.
2014-04-17 16:20:50 +02:00
Stephen Kelly 8ed59fc207 Add target_compile_features command.
This can be used to set the compiler features required by particular
targets. An error is issued at CMake time if the compiler does not
support the required feature. If a language dialect flag is required
by the features used, that will be added automatically.

Base the target_compile_features command on cmTargetPropCommandBase. This
gives us 'free' handling of IMPORTED, ALIAS, INTERFACE, non-compilable
and missing targets.
2014-04-07 18:11:18 +02:00
Stephen Kelly 272a20f8e5 cmTarget: Don't update IMPORTED target compilation properties
The include_directories() and add_compile_options() commands
should not append to the corresponding target property for IMPORTED
targets.  This is already the case for add_definitions().
2014-01-04 11:28:57 +01:00
Stephen Kelly 38afc82e76 target_include_directories: Allow relative path with genex
Treat paths which are relative and which contain a generator
expression which is not at the beginning as relative to the
source directory.

This matches the behavior of paths which are relative but contain
no generator expression at all.

Previously this would generate a relative path with the IMPORTED
target on export(), which would be a reported as a non-existent
path on import. If used directly in the buildsystem, it would be
reported as a relative path, which is also an error. There is no
need for a policy in this case.
2013-11-26 10:30:18 +01:00
Brad King 25b7f87eca Merge branch 'policy-CMP0022-fixes' into policy-CMP0022-fixes-for-master
Resolve conflict in Source/cmTarget.cxx by integrating the changes to
the internal copy constructor from both sides.  Also resolve a logical
conflict by dropping the special case for INTERFACE_LIBRARY targets.
Since cmTarget::SetMakefile already forces CMP0022 to NEW for such
targets we need no special handling.

Resolve conflict in Source/cmTargetLinkLibrariesCommand.h by dropping
the documentation change.  We will make the same change in the new
location of the same documentation in a separate commit.

Resolve conflicts in

 Tests/RunCMake/CMP0022/CMP0022-WARN-empty-old-stderr.txt
 Tests/RunCMake/CMP0022/RunCMakeTest.cmake

by taking the side from the 'policy-CMP0022-fixes' branch.
2013-11-03 09:20:47 -05:00
Stephen Kelly 0e06788c0a CMP0022: Add test for target_link_libraries plain signature 2013-11-02 12:48:48 -04:00
Brad King 1b21ac405f Merge topic 'fix-tll-static-private'
239b0c6 Don't add invalid content to static lib INTERFACE_LINK_LIBRARIES.
2013-10-26 10:28:02 -04:00
Stephen Kelly 239b0c6b0e Don't add invalid content to static lib INTERFACE_LINK_LIBRARIES.
Only valid target names or generator expressions may appear in
the target field of a LINK_ONLY expression.

Other content like link flags should still be added to that property
(wrapped in config-specific generator expressions), but not wrapped
in LINK_ONLY. Otherwise undue warnings would be issued for the
policy CMP0022.

The LINK_ONLY expression only has an effect for actual target
names anyway, so there is no logical deficit.
2013-10-26 10:10:20 -04:00
Stephen Kelly dede273193 target_link_libraries: Allow repeated use of LINK_{PRIVATE,PUBLIC} keywords.
This has not been allowed since they were introduced in
commit 91438222 (target_link_libraries: Add LINK_(PUBLIC|PRIVATE)
options, 2011-10-07), but allowing this form makes it more compatible
with the newer PUBLIC and PRIVATE keywords.
2013-10-17 17:37:20 +02:00
Stephen Kelly c0b8682200 Allow target commands to be invoked with no items (#14325).
Code such as

 target_include_directories(foo PRIVATE ${items})

should not work or break based on whether items is defined or not.
2013-07-31 16:06:34 +02:00
Stephen Kelly c8a10ba9ad cmTarget: Fix iface libraries and languages for static libraries. 2013-07-26 15:15:42 +02:00
Stephen Kelly b655865bbf target_link_libraries: Add PUBLIC/PRIVATE/INTERFACE keyword signature
Add a new signature to help populate INTERFACE_LINK_LIBRARIES and
LINK_LIBRARIES cleanly in a single call.  Add policy CMP0023 to control
whether the keyword signatures can be mixed with uses of the plain
signatures on the same target.
2013-07-24 11:52:44 -04:00
Stephen Kelly 3e30d9ed67 TLL: Don't populate old link interface if CMP0022 is NEW.
Always populate the INTERFACE_LINK_LIBRARIES for interface
entries. Don't populate the old interface properties
matching (IMPORTED_)?LINK_INTERFACE_LIBRARIES(_<CONFIG>)?
if CMP0022 is NEW.

Because the INTERFACE_LINK_LIBRARIES property is now populated by
the target_link_libraries when operating on a static library,
make an equivalent change which populates the property with
the same value when the old link_libraries() command is used. This
silences the policy warning in that case.
2013-07-08 22:39:58 +02:00
Stephen Kelly a984f3257e Introduce add_compile_options command.
This command is similar to add_definitions, in that it affects
the compile options of all targets which follow it. The implementation
is similar to the implementation of the include_directories command,
in that it is based on populating a COMPILE_OPTIONS directory property
and using that to initialize the same property on targets.

Unlike the include_directories command however, the add_compile_options
command does not affect previously defined targets. That is, in
the following code, foo will not be compiled with -Wall, but bar
will be:

 add_library(foo ...)
 add_compile_options(-Wall)
 add_library(bar ...)
2013-06-04 11:36:55 +02:00
Stephen Kelly 24466f22c0 Add target_compile_options command.
This command populates the COMPILE_OPTIONS target property.
2013-06-02 11:56:37 +02:00
Stephen Kelly 88308bc2f2 Test that linking using the debug keyword to tll works. 2013-05-16 14:31:00 -04:00
Brad King fc43477de0 Rename variable for including current directory in interfaces
Rename the variable added by commit 9ce1b9ef (Add
CMAKE_BUILD_INTERFACE_INCLUDES build-variable, 2012-11-25) to
CMAKE_INCLUDE_CURRENT_DIR_IN_INTERFACE to be more consistent with the
existing CMAKE_INCLUDE_CURRENT_DIR variable.

Suggested-by: Alex Neundorf <neundorf@kde.org>
2013-03-19 16:44:17 -04:00
Brad King 950541618c Merge topic 'fix-transitive-target-names'
1bdd167 Restore support for target names with '+' (#13986)
254687d Only process transitive interface properties for valid target names.
2013-03-12 13:46:40 -04:00
Stephen Kelly 1bdd167577 Restore support for target names with '+' (#13986)
Extend the range of valid target names with the + sign.  This character
can commonly be used for target names, such as those containing 'c++'.
Add a test but skip it for Borland and Watcom tools which do not support
the character.

Suggested-By: Benjamin Kloster
2013-03-12 13:39:11 -04:00
Stephen Kelly adcc00b16a Remove unused parameters from target_link_libraries tests. 2013-03-06 22:54:49 +01:00
Stephen Kelly cbf07569ed Revert "Add the TARGET_DEFINED generator expression"
This reverts commit 2bee6f5ba5.

This expression is not used, and has a semantic which is not completely
optimal (namely considering utility targets to be targets, though
usually we are interested in linkable targets).

Remove it so that we have more freedom to define better expressions in
the future.

Conflicts:
        Source/cmGeneratorExpressionEvaluator.cxx
        Tests/CMakeCommands/target_compile_definitions/CMakeLists.txt
        Tests/CMakeCommands/target_compile_definitions/consumer.cpp
2013-02-25 15:35:11 +01:00
Stephen Kelly 21a342c8b1 Remove use of TARGET_DEFINED from the target_link_libraries test.
Update the unit test introduced in commit 57175d55 (Only use early
evaluation termination for transitive properties., 2013-02-07) to
not use the expression, but still test the appropriate code.
2013-02-25 15:33:07 +01:00
Stephen Kelly 2e39d21c87 Remove use of TARGET_DEFINED from target_include_directories test.
Change the unit test introduced in commit 24dcf0c0 (Make sure
generator expressions can be used with target_include_directories.,
2013-01-16) to not use the expression, but still test the appropriate
code.
2013-02-25 15:25:38 +01:00
Stephen Kelly 3df36b5954 Revert "Add the $<LINKED:...> generator expression."
This reverts commit 0b92602b81.

Conflicts:
	Source/cmGeneratorExpressionEvaluator.cxx
	Tests/CMakeCommands/target_compile_definitions/CMakeLists.txt
	Tests/CMakeCommands/target_include_directories/CMakeLists.txt
2013-02-13 15:12:31 +01:00
Stephen Kelly 5c9f5e313f Don't use LINKED where not needed. 2013-02-12 10:39:35 +01:00
Stephen Kelly 57175d559e Only use early evaluation termination for transitive properties.
We need to make sure expressions which evaluate TARGET_PROPERTY:TYPE
multiple times for example get the correct result each time, and
not an empty string instead.
2013-02-07 16:21:09 +01:00
Stephen Kelly 77cecb778f Add includes and compile definitions with target_link_libraries.
This establishes that linking is used to propagate usage-requirements
between targets in CMake code. The use of the target_link_libraries
command as the API for this is chosen because introducing a new command
would introduce confusion due to multiple commands which differ only in
a subtle way.
2013-01-31 17:34:20 +01:00
Stephen Kelly 0b92602b81 Add the $<LINKED:...> generator expression.
This is both a short form of using a TARGET_DEFINED expression
together with a TARGET_PROPERTY definition, and a way to strip
non-target content from interface properties when exporting.
2013-01-31 17:34:20 +01:00
Stephen Kelly 7bf490e9bb Make subclasses responsible for joining content.
This way we can add handling of relative/absolute paths and of
-D in compile definitions.
2013-01-29 19:34:04 +01:00
Stephen Kelly f6b16d4b06 Don't allow targets args in the new target commands. 2013-01-29 18:44:54 +01:00
Brad King 76ace2b95a Merge topic 'disallow-IMPORTED-interface-porcelain'
b98d14d Disallow porcelain to populate includes and defines of IMPORTED targets.
48a4cf2 Revert "Allow target_link_libraries with IMPORTED targets."
2013-01-23 15:11:40 -05:00
Stephen Kelly b98d14d400 Disallow porcelain to populate includes and defines of IMPORTED targets.
With similar reasoning to the parent commit, as downstreams, we can't
determine what $<CONFIG> generator expressions would be appropriate.

Upstream would have populated the INTERFACE_INCLUDE_DIRECTORIES with
config-specific generator expressions, possibly appropriate for
their DEBUG_CONFIGURATIONS. In theory, if we would add include
directories for a DEBUG intent, we would have to match the upstream
configurations for that.

Rather than attempting to discover the appropriate configurations
at this time, simplify the feature instead. The use of IMPORTED targets
with these commands could still be added in the future if targets
would export their DEBUG_CONFIGURATIONS somehow.
2013-01-21 12:32:46 +01:00
Stephen Kelly 48a4cf2182 Revert "Allow target_link_libraries with IMPORTED targets."
This reverts commit 9cfe4f1b76.

It turns out that correctly adding the content to
the IMPORTED_LINK_INTERFACE_LIBARIES_<CONFIG> of an upstream target
from the buildsystem of a downstream project is not simple.

If upstream had added the INTERFACE content, the config-specific
properties would  be determined by the DEBUG_CONFIGURATIONS of
upstream.

As downstream, we don't have any information about what
the DEBUG_CONFIGURATIONS of upstream were, so we can't determine
which configuration-specific properties to populate. The best we can do
is add it to all of them or add it to the ones downstream considers to
be DEBUG_CONFIGURATIONS, neither of which is a good solution.

So, removing the porcelain API for that is the best approach. A human
can still determine which properties to populate and use
the set_property API to populate the desired properies.

Another solution to this would be for upstream targets to publish
what they consider DEBUG_CONFIGURATIONS, but that can be added in
a future release.
2013-01-21 12:19:39 +01:00
Stephen Kelly 24dcf0c007 Make sure generator expressions can be used with target_include_directories.
Handle the case that a generator expression is used before treating
a non-target as an error.
2013-01-16 22:16:46 +01:00
Stephen Kelly 2bee6f5ba5 Add the TARGET_DEFINED generator expression
This tests whether the parameter is a usable target.
2013-01-14 00:08:47 +01:00
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
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 2341470673 Merge topic 'tll-IMPORTED-targets'
9cfe4f1 Allow target_link_libraries with IMPORTED targets.
2013-01-10 10:22:26 -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
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
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 2c4969a131 Merge topic 'fix-test-warnings'
b6346f2 Tests: Fix warning about unused variable
2013-01-03 13:53:30 -05:00