Commit Graph

263 Commits

Author SHA1 Message Date
Brad King 9a77f65da7 Remove CMake Policy CMP0015 until it is revised
We revert commit "Create CMake Policy CMP0015 to fix set(CACHE)" because
the NEW behavior of the policy breaks a valid use case:

  # CMakeLists.txt
  option(BUILD_SHARED_LIBS "..." ON)
  add_library(mylib ...)
  set(BUILD_SHARED_LIBS OFF) # we want only mylib to be shared
  add_subdirectory(ThirdParty)

  # ThirdParty/CMakeLists.txt
  option(BUILD_SHARED_LIBS "..." ON)
  # uh, oh, with NEW behavior this dir uses shared libs!!!

We'll re-introduce the policy later with a different change in behavior
to resolve the motivating case, which was more subtle but less common.

See issue #9008.
2009-10-08 14:56:15 -04:00
Brad King 1e48243591 Introduce "build feature" lookup framework
This creates cmTarget::GetFeature and cmMakefile::GetFeature methods to
query "build feature" properties.  These methods handle local-to-global
scope and per-configuration property lookup.  Specific build features
will be defined later.
2009-10-02 13:52:01 -04:00
Brad King 56d1a1780d Create cmMakefile::PlatformIs64Bit helper method
This method centralizes tests for whether CMAKE_SIZEOF_VOID_P is 8.
2009-09-30 13:45:14 -04:00
Brad King 96afb12087 Convert CMake to OSI-approved BSD License
This converts the CMake license to a pure 3-clause OSI-approved BSD
License.  We drop the previous license clause requiring modified
versions to be plainly marked.  We also update the CMake copyright to
cover the full development time range.
2009-09-28 11:43:28 -04:00
Brad King ee2b446c95 Create CMake Policy CMP0015 to fix set(CACHE)
The set(CACHE) and option() commands should always expose the cache
value.  Previously we failed to expose the value when it was already set
if a local variable definition hid it.  When set to NEW, this policy
tells the commands to always remove the local variable definition to
expose the cache value.  See issue #9008.
2009-09-10 16:59:45 -04:00
Brad King afbe088309 Remove barely-used cmMakefile::AddCacheDefinition
The boolean overload of this method was used only to implement option().
We re-implement option() in terms of the main method and removes the
now-unused signature.  This removes some duplicate code that had already
fallen behind on changes (it was not removing the local definition
instead of setting it).
2009-09-10 16:59:36 -04:00
Brad King 80c947b397 No /fast targets in try_compile project mode
The try_compile command builds the cmTryCompileExec executable using the
cmTryCompileExec/fast target with Makefile generators in order to save
time since dependencies are not needed.  However, in project mode the
command builds an entire source tree that may have dependencies.
Therefore we can use the /fast target approach only in one-source mode.
2009-08-04 14:37:46 -04:00
Brad King fd10589995 ENH: Improve dynamic variable scope implementation
Previously each new variable scope (subdirectory or function call) in
the CMake language created a complete copy of the key->value definition
map.  This avoids the copy using transitive lookups up the scope stack.
Results of queries answered by parents are stored locally to maintain
locality of reference.

The class cmDefinitions replaces cmMakefile::DefinitionsMap, and is
aware of its enclosing scope.  Each scope stores only the definitions
set (or unset!) inside it relative to the enclosing scope.
2009-07-22 14:22:45 -04:00
Brad King c790b1fabb ENH: Create CMP0013 to disallow duplicate dirs
In CMake 2.6.3 and below we silently accepted duplicate build
directories whose build files would then conflict.  At first this was
considured purely a bug that confused beginners but would not be used in
a real project.  In CMake 2.6.4 we explicitly made it an error.

However, some real projects took advantage of this as a "feature" and
got lucky that the subtle build errors it can cause did not occur.
Therefore we need a policy to deal with the case more gracefully.
See issue #9173.
2009-06-17 13:40:09 -04:00
Brad King 66d69f864a ENH: Refactor generation of CTestTestfile content
This moves code which generates ADD_TEST and SET_TESTS_PROPERTIES calls
into CTestTestfile.cmake files out of cmLocalGenerator and into a
cmTestGenerator class.  This will allow more advanced generation without
cluttering cmLocalGenerator.  The cmTestGenerator class derives from
cmScriptGenerator to get support for per-configuration script
generation (not yet enabled).
2009-03-16 10:40:46 -04:00
Brad King c332e0bf3c ENH: Isolate policy changes in included scripts
Isolation of policy changes inside scripts is important for protecting
the including context.  This teaches include() and find_package() to
imply a cmake_policy(PUSH) and cmake_policy(POP) around the scripts they
load, with a NO_POLICY_SCOPE option to disable the behavior.  This also
creates CMake Policy CMP0011 to provide compatibility.  See issue #8192.
2009-01-22 13:18:40 -05:00
Brad King 3028ca756c ENH: Better policies for functions and macros
This teaches functions and macros to use policies recorded at creation
time when they are invoked.  It restores the policies as a weak policy
stack entry so that any policies set by a function escape to its caller
as before.
2009-01-22 13:16:47 -05:00
Brad King 26bf8b2cda ENH: Create notion of a 'weak' policy stack entry
A 'weak' poilcy stack entry responds normally to queries.  However,
setting a policy in a weak entry will recursively set the policy in the
next entry too.  This also gives the internal interface to create a weak
entry the option to provide an initial PolicyMap for it.
2009-01-22 13:16:27 -05:00
Brad King dfc181a1dc ENH: Create policy scope barriers
This creates a barrier mechanism to prevent user code from using
cmake_policy(POP) to pop a scope it didn't push with cmake_policy(PUSH).
2009-01-22 10:57:16 -05:00
Brad King ac14b5d2eb ENH: Make policy push/pop methods private
This makes cmMakefile::PushPolicy and cmMakefile::PopPolicy private so
that any outside place that uses them needs to use the PolicyPushPop
helper in an automatic variable.  We grant an exception to
cmCMakePolicyCommand so it can implement cmake_policy(PUSH) and
cmake_policy(POP).
2009-01-22 10:57:09 -05:00
Brad King a01eb6b27b ENH: Create automatic policy push/pop helper
This creates cmMakefile::PolicyPushPop to push and pop policy scope
automatically.  It also enforces balanced push/pop pairs inside the
scope it handles.
2009-01-22 10:56:50 -05:00
Brad King 8997f4760a ENH: Refactor policy stack representation
This defines PolicyMap as a public member of cmPolicies.  Its previous
role as a policy stack entry is now called PolicyStackEntry and
represented as a class to which more information can be added later.
2009-01-22 10:56:39 -05:00
Brad King 1dcc5b4558 ENH: Better handling of mismatched blocks
If a logical block terminates with mismatching arguments we previously
failed to remove the function blocker but replayed the commands anyway,
which led to cases in which we failed to report the mismatch (return
shortly after the ending command).  The recent refactoring of function
blocker deletion changed this behavior to produce an error on the ending
line by not blocking the command.  Furthermore, the function blocker
would stay in place and complain at the end of every equal-level block
of the same type.

This teaches CMake to treat the begin/end commands (if/endif, etc.) as
correct and just warns when the arguments mismatch.  The change allows
cases in which CMake 2.6.2 silently ignored a mismatch to run as before
but with a warning.
2009-01-21 09:49:00 -05:00
Brad King bca1026250 ENH: Better error message for unclosed blocks
This centralizes construction of the error message for an unclosed
logical block (if, foreach, etc.).  We record the line at which each
block is opened so it can be reported in the error message.
2009-01-21 09:48:20 -05:00
Brad King b8f5a934ec ENH: Refactor logical block enforcement
This uses a stack of 'barriers' to efficiently divide function blockers
into groups corresponding to each input file.  It simplifies detection
of missing block close commands and factors it out of ReadListFile.
2009-01-21 09:48:00 -05:00
Brad King 2c81e5fb5c ENH: Refactor function blocker deletion
When a function blocker decides to remove itself we previously removed
it at every return point from the C++ scope in which its removal is
needed.  This teaches function blockers to transfer ownership of
themselves from cmMakefile to an automatic variable for deletion on
return.  Since this removes blockers before they replay their commands,
we no longer need to avoid running blockers on their own commands.
2009-01-20 14:36:18 -05:00
Brad King a541cac325 ENH: Improve response to bad if or elseif
Previously bad arguments to an if() or elseif() would cause some
subsequent statements in the corresponding block to execute.  This
teaches CMake to stop processing commands with a fatal error.  It also
provides context to bad elseif() error messages.
2009-01-20 14:35:22 -05:00
Brad King d602a3db85 BUG: Enforce matching policy PUSH/POP in all files
The documentation of cmake_policy PUSH and POP states that they must
always match.  Previously we enforced this only for the top scope of
each CMakeLists.txt file.  This enforces the requirement for all files.
2009-01-15 14:37:14 -05:00
Brad King 9551cafd69 BUG: Pop a function scope even on error
This uses an automatic variable to push and pop variable scope inside a
function call.  Previously if the function failed its scope would not be
popped.  This approach guarantees a balanced push/pop.
2009-01-14 15:14:06 -05:00
Brad King ed3bb743f4 ENH: Improve test property speed with a map
Previously we stored a vector of tests to preserve their order.
Property set/get operations would do a linear search for matching tests.
This uses a map to efficiently look up tests while keeping the original
order with a vector for test file generation.
2009-01-05 15:00:57 -05:00
Bill Hoffman 0c24570ee4 BUG: fix issue with -D and cache force 2008-11-21 16:32:39 -05:00
Brad King 0ad5eb177b ENH: Return utility target after creation
After creating a utility target with AddUtilityCommand, return a pointer
to the cmTarget instance so the caller may further modify the target as
needed.
2008-10-09 11:00:54 -04:00
Brad King 5f57efb417 BUG: Skip a command if its arguments fail to parse
If the arguments to a command fail to parse correctly due to a syntax
error, the command should not be invoked.  This avoids problems created
by processing of commands with bad arguments.  Even though the build
system will not be generated, the command may affect files on disk that
persist across CMake runs.
2008-09-24 08:51:33 -04:00
Brad King 33e865c041 ENH: Add unset() command.
This introduces the unset() command to make it easy to unset CMake
variables, environment variables, and CMake cache variables.  Previously
it was not even possible to unset ENV or CACHE variables (as in
completely remove them).  Changes based on patch from Philip Lowman.
See issue #7507.
2008-08-25 10:31:29 -04:00
Brad King f50ed1fd88 ENH: Improve errors when a policy is REQUIRED
In the future some policies may be set to REQUIRED_IF_USED or
REQUIRED_ALWAYS.  This change clarifies the error messages users receive
when violating the requirements.
2008-08-18 16:29:00 -04:00
Brad King b9b11903ab BUG: Fix computed directory property DEFINITIONS.
- The property tracks the value formed by add_definitions
    and remove_definitions command invocations.
  - The string should be maintained for use in returning for the
    DEFINITIONS property value.
  - It is no longer used for any other purpose.
  - The DEFINITIONS property was recently documented as deprecated.
  - See bug #7239.
2008-06-26 13:30:10 -04:00
Brad King 1381aab4b7 BUG: Remove check for files written by file(WRITE) being loaded.
- CMake 1.8 and below did not do the check but could get in
    infinite loops due to the local generate step.
  - CMake 2.0 added the check but failed to perform it in directories
    with no targets (see bug #678).
  - CMake 2.2 removed the local generate which fixed the problem but
    did not remove the check.
  - Between CMake 2.4 and 2.6.0rc6 the check was fixed to work even
    when no targets appear in a directory (see bug #6923).
  - Bottom line: the check is no longer needed.
2008-04-30 13:42:40 -04:00
Brad King e3666a1de5 ENH: Allow policy CMP0000 to be set explicitly
- Message for missing cmake_minimum_required is not issued
    until the end of processing the top CMakeLists.txt file
  - During processing a cmake_policy command may set behavior
  - OLD behavior is to silently ignore the problem
  - NEW behavior is to issue an error instead of a warning
2008-03-31 13:33:09 -04:00
Brad King f7f03347a6 ENH: Improve new error/warning message generation
- Add cmListFileBacktrace to record stack traces
  - Move main IssueMessage method to the cmake class instance
    (make the backtrace an explicit argument)
  - Change cmMakefile::IssueMessage to construct a backtrace
    and call the cmake instance version
  - Record a backtrace at the point a target is created
    (useful later for messages issued by generators)
2008-03-13 13:48:57 -04:00
Bill Hoffman dc9245df6c ENH: add enum to IssueMessage 2008-03-11 10:29:56 -04:00
Brad King 680104a490 ENH: New format for warning and error messages
- Add cmMakefile methods IssueError and IssueWarning
  - Maintain an explicit call stack in cmMakefile
  - Include context/call-stack info in messages
  - Nested errors now unwind the call stack
  - Use new mechanism for policy warnings and errors
  - Improve policy error message
  - Include cmExecutionStatus pointer in call stack
    so that errors deeper in the C++ stack under
    a command invocation will become errors for the
    command
2008-03-07 08:40:36 -05:00
Brad King 49549560b2 ENH: Improve cmake_policy command signature
- Replace NEW and OLD modes with a SET mode for clarity
  - Enforce VERSION argument validity (major.minor[.patch])
2008-03-05 18:21:10 -05:00
Ken Martin d49ef18f8a ENH: add first cut and policies still need to add the doc support 2008-03-01 15:20:35 -05:00
Brad King 1c0595c73f ENH: Add global property ALLOW_DUPLICATE_CUSTOM_TARGETS to help existing projects that depend on having duplicate custom targets. It is allowed only for Makefile generators. See bug#6348. 2008-02-14 16:42:29 -05:00
Brad King ac0e58dcfb ENH: Enforce global target name uniqueness.
- Error if imported target is involved in conflict
  - Error for non-imported target conflict unless
    CMAKE_BACKWARDS_COMPATIBILITY <= 2.4
  - Include OUTPUT_NAME property in error message
  - Update add_executable and add_library command documentation
2008-02-11 13:35:39 -05:00
Brad King 739a463539 ENH: Add cmMakefile::NeedBackwardsCompatibility method to pass through to cmLocalGenerator::NeedBackwardsCompatibility for convenience. 2008-02-11 13:35:30 -05:00
Brad King 5594ad4885 ENH: Updated exporting and importing of targets to support libraries and configurations.
- Created cmExportFileGenerator hierarchy to implement export file generation
  - Installed exports use per-config import files loaded by a central one.
  - Include soname of shared libraries in import information
  - Renamed PREFIX to NAMESPACE in INSTALL(EXPORT) and EXPORT() commands
  - Move addition of CMAKE_INSTALL_PREFIX to destinations to install generators
  - Import files compute the installation prefix relative to their location when loaded
  - Add mapping of importer configurations to importee configurations
  - Rename IMPORT targets to IMPORTED targets to distinguish from windows import libraries
  - Scope IMPORTED targets within directories to isolate them
  - Place all properties created by import files in the IMPORTED namespace
  - Document INSTALL(EXPORT) and EXPORT() commands.
  - Document IMPORTED signature of add_executable and add_library
  - Enable finding of imported targets in cmComputeLinkDepends
2008-01-28 08:38:36 -05:00
Brad King 7213408287 ENH: Added cmMakefile::NeedCacheCompatibility method and support for it in cmCacheManager. This will allow commands to modify their behavior when running with a cache loaded from an earlier CMake version. 2008-01-24 07:37:08 -05:00
Ken Martin 0e69d38004 ENH: add return and break support to cmake, also change basic command invocation signature to be able to return extra informaiton via the cmExecutionStatus class 2008-01-23 10:28:26 -05:00
Brad King 433099ecdd ENH: Converted cmMakefile DefineFlags added by ADD_DEFINITIONS command into a COMPILE_DEFINITIONS directory property. 2008-01-17 19:29:43 -05:00
Brad King caca9b8065 ENH: Add AppendProperty methods for use by C++ code in CMake. Simplify implementation of SET_PROPERTY command by using them. 2008-01-17 18:13:55 -05:00
Ken Martin ac4c2f675a ENH: change raise_scope signature to be safer for returned varuables 2008-01-03 11:22:33 -05:00
Ken Martin f4b1c3880b ENH: add functions and raise scope 2007-12-03 13:35:41 -05:00
Alexander Neundorf f55dd81190 COMP: parent is not used anymore with this patch, since now the name is
given as a vector of components

Alex
2007-08-26 03:17:11 -04:00
Alexander Neundorf 9220e97401 BUG: fix #4057 (which had several duplicates): handle recursivew source groups better, i.e. multiple sourcegroups with the same end component work now
Alex
2007-08-24 14:21:49 -04:00