Php7.2 add JPEG extension

A system is supposed to php5.6 On , Upgrade the server today , By the way, the php It's also upgraded , After the upgrade, I feel sad , Unable to generate thumbnails .
The problem is ：Call to undefined function imagecreatefromjpeg()``
then phpinfo see , No, jpeg An extension of
A lot of Baidu is like this ：

 Download the expansion pack first 
wget http://www.ijg.org/files/jpegsrc.v6b.tar.gz
 install 
tar -zxvf jpegsrc.v6b.tar.gz
cd jpeg-6b
./configure --prefix=xxxx # This path xxxx Remember , I'll take the exam later 
make && make install

cd php Source package /ext/gd
php The installation path /bin/phpize
./configure --with-jpeg-dir=xxxx #jpeg The installation path 
make && make install
# By the end of this 

This is from Baidu , Almost always , But it doesn't work on my server , For two hours .
Finally, a flash of inspiration ^ _ ^, Do you want to php Recompile it , But I am worried that it will affect other extensions .
Final stroke , No Baidu , I groped for it myself
phpinfo Copy the contents behind this position of the page

Replace the single quotation marks , Don't move the rest , find -width-jpeg-dir Followed by xxxx (jpeg Installation path for )
Switch to php Source package directory Direct paste ./configure This is a piece of function
Last make && make install
restart php
It did （ In the middle, I actually missed one time ,gd Check for errors , I downloaded it jpeg Version too high ）, Almost excited to cry