Change the default value of `CMAKE_AUTOMOC_PATH_PREFIX` to `OFF` to
restore compatibility with behavior of CMake 3.15 and below.
C++ source files that are generated by Qt's meta object compiler (moc)
include the header file that was passed as input argument to moc. This
is usually a path relative to the source directory, for example
#include "../../source/dir/myobject.h"
That is problematic for reproducible builds as described in #18815.
To cope with that, the target property AUTOMOC_PATH_PREFIX was
introduced in CMake 3.16 by commit d018d27c10 (Autogen: Add moc path
prefix generation (AUTOMOC_PATH_PREFIX), 2019-09-13, v3.16.0-rc1~94^2~4).
The property is default-initialized from the variable
`CMAKE_AUTOMOC_PATH_PREFIX`, which defaults to `ON`.
If this property is ON, and myobject.h is located in an include
directory of the target, moc-generated C++ files include the file
without the "path prefix":
#include "myobject.h"
This behavior, however, can break projects that have equally named
header files in different include directories. As "not breaking
existing projects" trumps "have reproducible builds by default" we
change the default of `CMAKE_AUTOMOC_PATH_PREFIX` to `OFF`.
Also, it is now possible to pass `-DCMAKE_AUTOMOC_PATH_PREFIX=ON` on the
CMake command line. Before, it was overridden in `CMakeGenericSystem`.
Fixes: #20598
Issue: #18815
Refactoring in commit 889a7146ff (GoogleTestAddTests: Refactor into
callable method, 2020-03-16, v3.18.0-rc1~450^2~3) accidentally
parsed `TEST_EXECUTOR` as a single-value argument instead of a list.
Fix logic added by commit fc5afbe970 (FindCURL: support COMPONENTS to
check features, 2018-11-28, v3.14.0-rc1~287^2~2).
When searching for particular components and `curl-config` reports one of
the components being searched for first in the list, `find_package` fails.
This is due to the check that treats non-zero index in the list as success
and zero index as failure, while documentation on `list(FIND)` states that
failure to find an element results in return value of -1 (not 0). I'm
hitting this when building cURL with support for HTTP and HTTPS protocols
only, and then trying to `find_package(CURL COMPONENTS HTTP HTTPS)`.
I'm using `if(NOT x EQUAL -1)` check form as it appears to be the most used
throughout the modules.
While fixing this issue I've looked through all the uses of `list(FIND)` in
other modules but wasn't able to find improper use except here.
Since commit 8cc384f629 (Compilers: Add paths from -print-sysroot to
system prefix path, 2020-03-25, v3.18.0-rc1~337^2) we prepend the
compiler's sysroot to `CMAKE_SYSTEM_PREFIX_PATH`. This does not
make sense when the prefix is just `/`, such as on Ubuntu 16.04's
system compiler.
Fixes: #21019
The optimization from commit 627fc5b44f (ExternalProject: Avoid
unnecessary checkout on clone, 2019-07-29, v3.16.0-rc1~325^2) triggers a
bug in the Git 2.20.x series that is not in older or newer versions.
Drop the optimization for that specific range of Git versions.
Fixes: #21009
When `CMAKE_OSX_ARCHITECTURES` is not specified, we add the Xcode
setting `ONLY_ACTIVE_ARCH = YES` with the intention of targeting the
native architecture of the host. However, the default `ARCHS` value
chosen by "Xcode 12 Universal Apps" includes multiple architectures.
Add an explicit `ARCHS` setting with value `$(NATIVE_ARCH_ACTUAL)`
to tell Xcode to use the host's native architecture only.
Fixes: #20893
The path to the 32 bit libraries in the Intel windows/redist folder use
ia32. I don't remember if this has changed at some point, but ia32 has
been used at least since Intel Fortran XE 2018.
The version is determined in two steps. First, the "spec date" is
detected and cached. Second, the date is converted to a version.
Move the second step out of the spec date cache guard condition
so that it runs every time even if the spec date is already cached.
Fixes: #19150
Since commit dd378258f1 (FindJava: Do not accept OS X stub 'java' as
Java, 2014-10-24, v3.1.0-rc3~29^2) we try to avoid using the macOS
`/usr/bin/java` stub if no underlying implementation of Java is actually
installed. However, the message that `/usr/bin/java` prints when there
is no Java available has changed since then. Update our check to also
look for the new message.
While at it, revise the way we suppress `Java_JAVA_EXECUTABLE`.
Previously we set its cache entry to `Java_JAVA_EXECUTABLE-NOTFOUND`,
but that would cause the same find-and-reject sequence to be followed
every time CMake runs in a build tree. Instead, use the approach from
commit 2c0db404d1 (FindSubversion: Do not accept macOS stub without
Xcode implementation, 2020-05-28, v3.18.0-rc1~67^2). Leave the cache
entry alone and just set a normal variable of the same name to hide it.
The Google test framework allows to write the results into an XML file
since commit e9ab39eb1d (GoogleTest: Add XML_OUTPUT_DIR parameter,
2020-03-06, v3.18.0-rc1~538^2~2). This file is passed on the command
line: `--gtest_output=xml:FILE_NAME`.
The module allows to specify a directory to save those files with
**TEST_XML_OUTPUT_PARAM**.
If the option is set, the filename will be set to
`${prefix}${pretty_suite}.${pretty_test}${suffix}.xml`.
The pretty names contain parameters for the tests, if
value-parameterized tests are used. These parameters may not be safe to
use in file names.
There are two possible options:
1. sanitize the file name
2. omit the values and use the internal numbering of gtest
This commit chose option 2. The testname needs to be a valid C++
identifier and should therefore be reasonable for a filename.
Note that the generated names contain slashes. This will lead to
subdirectories, but works on both Linux and Windows.
Fixes: #20877
When using a Visual Studio generator, we do not know the path to
`CMAKE_CUDA_COMPILER` until after the compiler id detection project
extracts it. However, based on the VS toolchain configuration we know
that the compiler id will be NVIDIA, so use that to drive the CUDA
architecture flag logic. After the main compiler id step we know
`CMAKE_CUDA_COMPILER`, so `CMAKE_CUDA_COMPILER_TOOLKIT_ROOT` can then be
computed.
Brad King