Since commit v3.9.0-rc1~148^2 (Do not assume GCC libs are linked by all
compilers, 2017-05-05) we no longer filter out all `gcc*` implicit link
libraries. This allows mixing of gcc and non-gcc compilers across
languages. However, this caused a subtle problem with how GCC makes
exception handling symbols available to linked binaries.
GCC (at least on MinGW) provides two different libraries with exception
handling symbols:
* gcc_s: A shared library with -fvisibility=default, used by -shared-libgcc.
* gcc_eh: A static library with -fvisibility=hidden, used by -static-libgcc.
The C compiler (on MinGW) defaults to -static-libgcc and uses gcc_eh.
The C++ compiler defaults to -shared-libgcc and uses gcc_s when linking
shared libraries and executables so that exceptions can propagate across
shared libraries [1]. When linking a mixed-language binary, the C++
compiler should be used along with its choice of gcc_s. In this case
gcc_eh should not be added even though the C compiler implies it because
gcc_s supersedes it.
Since the above-mentioned change, CMake is adding gcc_eh to C++ link
lines that also contain C code on MinGW. This causes both gcc_s and
gcc_eh to be used, which is incorrect. We can fix this simply by
excluding gcc_eh from the C compiler's implicit link libraries.
[1] https://gcc.gnu.org/onlinedocs/gcc-7.2.0/gcc/Link-Options.html#Link-OptionsFixes: #17436
The purpose of this new `IMPORTED_GLOBAL` target-property is to prolong
the lifetime and scope of `IMPORTED` targets in such a way as if they
had been created with the keyword `GLOBAL` in the first place.
* It can only be set to `TRUE`. That means, a local `IMPORTED` target
can be promoted to global scope but a global `IMPORTED` target cannot
be degraded to local scope!
* Setting it to `TRUE` only succeeds if done from within the same
directory in which the `IMPORTED` target was created in the first
place.
Fixes#17256.
4c626b7e Tests: Refactor contract test activation
4bd5af63 Tests: Factor out contract test HOME finding
0ce082b7 Tests: Drop unused contract test environment script
36346de4 Tests: Drop unused contract test
bbc9c966 Tests: Honor already-set CTEST_REAL_HOME in case of repeat run
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1444
39c2feaf misc: Added utility method to allow working with stacks
f5d2988e server: Swapped to cm_thread impl
2636d86c utility: Added minimal std::thread drop-in
d46b4ba8 server: Updated server tests to try various communication channels
08dca583 Tests: reworked server tests to allow other operation modes
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1230
Some are user facing.
Found using
codespell -q 3 --skip="./Utilities" -I .cmake-whitelist.txt`
whereby the whitelist contained:
ans
dum
helpfull
emmited
emmitted
buil
iff
isnt
nto
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pathes
substract
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todays
upto
whitespaces
The OLD behaviors of all policies are deprecated, but only by
documentation. Add an explicit deprecation diagnostic for some policies
to encourage projects to port away from setting policies to OLD.
4e46f97c Merge branch 'backport-3.9' into autogen-moc-predefs-no-moc-options
978c98b7 Autogen: Don't add AUTOMOC_MOC_OPTIONS to moc-predefs command
d3caf941 Autogen: Tests: Set AUTOMOC_MOC_OPTIONS in a simple test
96d20a4d Autogen: Don't use AUTOMOC_MOC_OPTIONS in moc-predefs command
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: EoD <eod@xmw.de>
Merge-request: !1432
ae5f4069 CMP0037: Allow test and package targets when features are not enabled
409527a0 CMP0037: De-duplicate check and message generation
a2611d81 Tests: Add RunCMake.CMP0037 case for WARN on reserved targets
103501c4 Tests: Do not enable languages in all cases of RunCMake.CMP0037
2d0b3e6e cmGlobalGenerator: Refactor test and package target conditions
Acked-by: Kitware Robot <kwrobot@kitware.com>
Reviewed-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !1417
fb88d2b5 Help: Add notes for topic 'generalize-importedtargets-behavior'
494906a8 Add support for IMPORTED GLOBAL targets to be aliased
fe4b25ec Teach target_* commands to set INTERFACE properties of IMPORTED targets
e40fd9fd cmTargetPropCommandBase: Fix typo in error message
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Henry Schreiner <henryschreineriii@gmail.com>
Merge-request: !1264
Refactoring in commit v3.10.0-rc1~115^2 (Clean up iwyu code to not be
one big if statement, 2017-08-28) incorrectly changed the logic to run
only one lint tool at a time. Restore support for running all tools
specified on the command-line.
In commit v3.5.0-rc1~8^2~2 (Help: Clarify policy `CMP0040`
documentation, 2016-01-28) the documentation was clarified to indicate
that the target must be defined in the current directory. Do the same
for the text of the policy warning itself.
Fixes: #17399
Now, several `INTERFACE_*` properties can be set on `IMPORTED` targets,
not only via `set_property` and `set_target_properties` but also via
`target_compile_definitions`, `target_compile_features`,
`target_compile_options`, `target_include_directories`, `target_sources`
and `target_link_libraries`.
Fixes: #15689
Issue: #17197
4e7f6738 Defer check for sources within a target until generation.
6e4e7c65 Tests: Exclude bad RunCMake.add_executable case on multi-arch Xcode
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1242
