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Denis Thulin authored
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: #16...
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