On modern system:
cd /afs/sipb.mit.edu/project/git/src/curl
git fetch --all
git checkout .
git checkout curl-7_48_0
sed -i 's/-DEV//' include/curl/curlver.h
./buildconf

On Athena 9.4 (rhel4):
[in temp dir]
CFLAGS="-DOPENSSL_NO_SHA256" /afs/sipb.mit.edu/project/git/src/curl/configure --prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.48.0/common --exec-prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.48.0/i386_rhel4 --with-gssapi=/usr/athena
make
make install

On Athena 9.4 (solaris, multics):
[in temp dir]
CFLAGS="-DOPENSSL_NO_SHA256" /afs/sipb.mit.edu/project/git/src/curl/configure --prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.48.0/common --exec-prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.48.0/sun4x_510 --with-gssapi=/usr/athena --enable-ldaps
make
make install

Link common for each architecture:
(cd /afs/sipb.mit.edu/project/git/builds/curl-7.48.0;\
 for arch in `ls -d *_*`; do \
  (cd $arch; \
   ln -sf ../common/* . )\
 done;)

To deploy:
(cd /mit/git/curl ; ln -sf ../builds/curl-7.48.0/{i386_rhel4,sun4x_510} .)