I am trying to install php7.2-dev but it depends upon dependencies i have search a lot on those but can't resolve the issue.
sudo apt install php7.2-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
php7.2-dev : Depends: autoconf (>= 2.63) but it is not installable
Depends: automake (>= 1.11) but it is not installable
Depends: libssl-dev but it is not installable
Depends: pkg-config but it is not installable
Depends: shtool but it is not installable
Depends: libtool (>= 2.4.6-0.1~) but it is not installable
Recommends: pkg-php-tools but it is not installable
E: Unable to correct problems, you have held broken packages.