Ok, I'm coming late to the git game, and having some build problems.
My machine is amd64 (athlon64), and I fetched both

git-0.7.tar.bz2
cogito-0.9.tar.bz2

They both fail to build in a similar fashion
For example, I did
bunzip2 -c git-0.7.tar.bz2 | tar xvf -
cd git-0.7
export PATH=$PWD:$PATH
make

and it fails here:
gcc -g -O2 -Wall '-DSHA1_HEADER=<openssl/sha.h>' -o git-convert-cache
convert-c
ache.c libgit.a -lz -lssl
convert-cache.c: In function `write_subdirectory':
convert-cache.c:102: warning: field precision is not type int (arg 4)
gcc -g -O2 -Wall '-DSHA1_HEADER=<openssl/sha.h>' -o git-http-pull
http-pull.c l
ibgit.a -lz -lssl -lcurl
http-pull.c:10:23: curl/curl.h: No such file or directory
http-pull.c:11:23: curl/easy.h: No such file or directory
http-pull.c:13: error: parse error before '*' token

Any hints?

Thanks in advance

The entire build output is attached: