prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include

Name: libjxl
Description: Loads and saves JPEG XL files
Version: 0.11.2
Requires.private: libhwy libbrotlienc libbrotlidec libjxl_cms
Libs: -L${libdir} -ljxl 
Libs.private: -lm -lstdc++
Cflags: -I${includedir}
Cflags.private: -DJXL_STATIC_DEFINE