~/Map/src/mod_tile$ sudo make install
make[1]: Entering directory `/home/myusername/Map/src/mod_tile'
/usr/share/apr-1.0/build/libtool --silent --mode=compile x86_64-linux-gnu-gcc -I.  -DLINUX=2 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_REENTRANT -I/usr/include/apr-1.0 -I/usr/include/openssl -I/usr/include/xmltok -pthread    -g -O2 -Wall  -DLINUX=2 -D_GNU_SOURCE -D_REENTRANT -I/usr/include/apache2 -I. -I/usr/include/apr-1.0   -I/usr/include/apache2 -I. -I/usr/include/apr-1.0 -prefer-pic -c mod_tile.c && touch mod_tile.slo
mod_tile.c: In function 'error_message':
mod_tile.c:77:9: warning: variable 'len' set but not used [-Wunused-but-set-variable]
/usr/share/apr-1.0/build/libtool --silent --mode=compile x86_64-linux-gnu-gcc -I.  -DLINUX=2 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_REENTRANT -I/usr/include/apr-1.0 -I/usr/include/openssl -I/usr/include/xmltok -pthread    -g -O2 -Wall  -DLINUX=2 -D_GNU_SOURCE -D_REENTRANT -I/usr/include/apache2 -I. -I/usr/include/apr-1.0   -I/usr/include/apache2 -I. -I/usr/include/apr-1.0 -prefer-pic -c dir_utils.c && touch dir_utils.slo
/usr/share/apr-1.0/build/libtool --silent --mode=compile x86_64-linux-gnu-gcc -I.  -DLINUX=2 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_REENTRANT -I/usr/include/apr-1.0 -I/usr/include/openssl -I/usr/include/xmltok -pthread    -g -O2 -Wall  -DLINUX=2 -D_GNU_SOURCE -D_REENTRANT -I/usr/include/apache2 -I. -I/usr/include/apr-1.0   -I/usr/include/apache2 -I. -I/usr/include/apr-1.0 -prefer-pic -c store.c && touch store.slo
/usr/share/apr-1.0/build/libtool --silent --mode=link x86_64-linux-gnu-gcc -I.  -DLINUX=2 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_REENTRANT -I/usr/include/apr-1.0 -I/usr/include/openssl -I/usr/include/xmltok -pthread     -Wl,--as-needed -Wl,-z,relro    -o mod_tile.la -rpath /usr/lib/apache2/modules -module -avoid-version mod_tile.lo dir_utils.lo store.lo
/usr/share/apr-1.0/build/libtool --silent --mode=install cp mod_tile.la /usr/lib/apache2/modules/
make[1]: Leaving directory `/home/myusername/Map/src/mod_tile'