I recently ran in to a situation where I was building PHP 7.1.13 from source. Configuration & make went fine, however, when I ran make install it hung. It turns out that if you are building PHP with Apache (apxs) the make file calls apxs with the -a flag which tells it to modify the httpd.conf file. If, for whatever reason, the file is not writeable then it fails and you get the hang.
Line 108 in my Makefile looks like this:
INSTALL_IT = $(mkinstalldirs) '$(INSTALL_ROOT)/usr/lib64/httpd/modules' && $(mkinstalldirs) '$(INSTALL_ROOT)/etc/httpd/conf' && /usr/sbin/apxs -S LIBEXECDIR='$(INSTALL_ROOT)/usr/lib64/httpd/modules' -S SYSCONFDIR='$(INSTALL_ROOT)/etc/httpd/conf' -i -a -n php7 libphp7.la
I had to remove the -a flag and then it was fine.
