pkg-config files are no longer relocatable with 3.3

[lazka]

Starting with 3.3.0 the pkg-config files are missing a prefix and are using hardcoded paths instead of ${prefix}, breaking relocation on Windows:

new:

libdir=/clang64/lib
includedir=/clang64/include

Name: OpenSSL-libssl
Description: Secure Sockets Layer and cryptography libraries
Version: 3.3.0
Requires.private: libcrypto
Libs: -L${libdir} -lssl
Cflags: -I${includedir}

old:

prefix=/clang64
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: OpenSSL-libssl
Description: Secure Sockets Layer and cryptography libraries
Version: 3.2.1
Requires.private: libcrypto
Libs: -L${libdir} -lssl
Cflags: -I${includedir}

On Windows (and Unix) to make .pc files relocatable, paths should use ${prefix}, or if that's for some reason isn't possible then there is a fallback where every path that starts with the prefix recorded in the file is converted to use ${prefix} internally.

Starting with 3.3 the paths are no longer derived from ${prefix} and prefix is missing, which breaks relocation (also on Unix, but it's not that commonly used there)

[jasagredo]

Unless I am mistaken, it seems to me that this is also manifesting in macOS via brew. Notice the difference in .pc files for openssl 3.0.13 and 3.3.0:

bash-3.2$ cat /opt/homebrew/Cellar/openssl\@3.0/3.0.13/lib/pkgconfig/libssl.pc
prefix=/opt/homebrew/Cellar/[email protected]/3.0.13
exec_prefix=${prefix}
libdir=/opt/homebrew/Cellar/[email protected]/3.0.13/lib
includedir=${prefix}/include

Name: OpenSSL-libssl
Description: Secure Sockets Layer and cryptography libraries
Version: 3.0.13
Requires.private: libcrypto
Libs: -L${libdir} -lssl
Cflags: -I${includedir}


bash-3.2$ cat /opt/homebrew/Cellar/openssl\@3/3.3.0/lib/pkgconfig/libssl.pc
libdir=/opt/homebrew/Cellar/openssl@3/3.3.0
includedir=/opt/homebrew/Cellar/openssl@3/3.3.0/include

Name: OpenSSL-libssl
Description: Secure Sockets Layer and cryptography libraries
Version: 3.3.0
Requires.private: libcrypto
Libs: -L${libdir} -lssl
Cflags: -I${includedir}

[h-vetinari]

There are also tools that do pkg-config --variable=prefix openssl for populating OPEN_SSL_ROOT. This obviously broke too.