Oldest `RHEL-6` based dist (CentOS-6, Oracle Linux 6) is have `pkgconfig-0.23-9` and `libxml2-2.7.6` ``` [root@8760520b12b8 /]# cat /usr/lib64/pkgconfig/libxml-2.0.pc prefix=/usr exec_prefix=/usr libdir=/usr/lib64 includedir=/usr/include modules=1
Name: libXML Version: 2.7.6 Description: libXML library version2. Requires: Libs: -L${libdir} -lxml2 Libs.private: -lz -lm Cflags: -I${includedir}/libxml2 ```
For oldest OpenSUSE `pkg-config-0.28-11` and `libxml2-devel-2.9.4` ``` 52640dd1687d:/ # cat /usr/lib64/pkgconfig/libxml-2.0.pc prefix=/usr exec_prefix=/usr libdir=/usr/lib64 includedir=/usr/include modules=1
Name: libXML Version: 2.9.4 Description: libXML library version2. Requires: Libs: -L${libdir} -lxml2 Libs.private: -L/lib64 -lz -llzma -lm Cflags: -I${includedir}/libxml2 ```