Before calling pkg_check_modules, modules must check PKG_CONFIG_FOUND.
When FindPkgConfig.cmake is loaded, pkg_check_modules is always defined
regardless of pkg-config being present. However, the whole module might
be disabled on user request with CMAKE_DISABLE_FIND_PACKAGE_PkgConfig.
This must not break Find modules which just look for a hint or similar.
The installer no longer names debug libraries with a `d` suffix. They
are distinguished by the per-runtime-library directory containing them.
Fixes: #25856
Since commit 5cc8a69867 (FindOpenSSL: Trust the user's OPENSSL_ROOT_DIR,
2023-05-17, v3.27.0-rc1~71^2) we use `OPENSSL_ROOT_DIR` whenever it is
defined, even if it is an empty string. This breaks a pattern in
existing projects that define an empty `OPENSSL_ROOT_DIR` cache entry so
that `cmake-gui` users can fill it in. Use the value only if non-empty.
Issue: #18352
Activate the logic from commit 8098bd5768 (FindOpenSSL: add pthread and
dl dependencies to static lib on Linux, 2019-09-13, v3.16.0-rc1~72^2)
on more UNIX platforms.
Fixes: #24870
When the user has specified the OpenSSL installation root directory,
through the variable OPENSSL_ROOT_DIR or the environment variable with
the same name, trust it, don't try to find OpenSSL anywhere else.
Fixes: #18352
* Avoid searching in the `Program Files` folder because the official
OpenSSL is built for the MSVC ABI, and so is not compatible with MinGW.
* Static libraries on MinGW has `.a` extension.
Because -pthread doesn't begin with -l, it doesn't show up in the
pkgconfig LIBRARIES variable, causing FindOpenSSL to not add the
Threads::Threads dependency. Explicitly search LDFLAGS_EXTRA
for -pthread and add the dependency if it's found.
Fixes: #24532
Since commit 1b7804edd0 (FindOpenSSL: use extra dependencies from
pkg-config as well, 2022-12-05, v3.26.0-rc1~227^2) we conditionally find
Threads but unconditionally depend on it. Make the conditions
consistent.
Fixes: #24505
The variables `OPENSSL_VERSION_MAJOR`, `OPENSSL_VERSION_MINOR` and
`OPENSSL_VERSION_FIX` are now set to the correct values when using
OpenSSL version >= 3.0.0, which uses a new format.
The upstream `openssl` build system may install libraries to `lib64`
even on platforms whose conventions do not use `lib64` for
distro-packaged libraries.
Fixes: #22945
In commit 7b83ca816a (FindOpenSSL: add target OpenSSL::applink to
support OpenSSL's applink feature, 2020-05-12, v3.18.0-rc1~150^2) the
version check was written as "major.major.fix" instead of
"major.minor.fix".
Fix the regex syntax added by commit 61d746e592 (FindOpenSSL: Detect
OpenSSL 3.0.0, 2020-05-27, v3.17.3~1^2). Add missing escapes.
Test with `openssl-3.0.0-alpha3`.
While at it, also unset a temporary variable after use.
When using a custom sysroot to build things using pkg-config, some of
the output variables feature the sysroot while others do not:
```console
$ export PKG_CONFIG_SYSROOT_DIR=/path/to/sysroot
$ export PKG_CONFIG_LIBDIR=/path/to/sysroot/usr/lib/pkgconfig
$ pkg-config --cflags-only-I openssl
-I/path/to/sysroot/usr/include/
$ pkg-config --variable=includedir openssl
/usr/include
$ pkg-config --libs-only-L openssl
-L/path/to/sysroot/usr/lib
$ pkg-config --variable=libdir openssl
/usr/lib
```
When using `pkg_check_modules`, it's pretty much the same:
```cmake
pkg_check_modules(_OPENSSL QUIET openssl)
_OPENSSL_INCLUDE_DIRS == /path/to/sysroot/usr/include/
_OPENSSL_INCLUDEDIR == /usr/include
_OPENSSL_LIBRARY_DIRS == -L/path/to/sysroot/usr/lib
_OPENSSL_LIBDIR == /usr/lib
```
However, FindOpenSSL only searches for headers in `INCLUDEDIR` and
libraries in `LIBDIR` instead of searching `INCLUDE_DIRS` and
`LIBRARY_DIRS` as well.
This fixes that behaviour.
Fixes: #16885
Signed-off-by: Denis Thulin <denis.thulin@enyx.fr>
Some are user facing.
Found using
codespell -q 3 --skip="./Utilities" -I .cmake-whitelist.txt`
whereby the whitelist contained:
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Since commit v3.8.0-rc1~132^2 (FindOpenSSL: Check that both CRYPTO and
SSL libraries are present, 2017-01-03) we require both crypto and ssl
libraries to be present. This makes sense because `OPENSSL_LIBRARIES`
lists both and breaks when one is not found. However, prior to that
fix we supported finding only the crypto library and using it through
the imported target. Drop the requirement for ssl to restore support
for using crypto alone.
Later this module should be taught to support the `COMPONENTS` argument
of `find_package`.
Fixes: #16882
