Add NO_OPENSSL option

Linking with OpenSSL is not always desirable. Add NO_OPENSSL option
to use SHA-1 code bundled with Git.

Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net>

1 files changed, 12 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index 60d8c58..4e101d3 100644
--- a/Makefile
+++ b/Makefile
@@ -12,4 +12,7 @@ INSTALL = install
 # Define NO_STRCASESTR if you don't have strcasestr.
 #
+# Define NO_OPENSSL to disable linking with OpenSSL and use bundled SHA1
+# implementation (slower).
+#
 # Define NEEDS_LIBICONV if linking with libc is not enough (eg. Darwin).
 #
@@ -69,5 +72,5 @@ endif
 
 
-EXTLIBS = git/libgit.a git/xdiff/lib.a -lz -lcrypto
+EXTLIBS = git/libgit.a git/xdiff/lib.a -lz
 OBJECTS =
 OBJECTS += cache.o
@@ -124,4 +127,10 @@ ifdef NO_STRCASESTR
         CFLAGS += -DNO_STRCASESTR
 endif
+ifdef NO_OPENSSL
+        CFLAGS += -DNO_OPENSSL
+        GIT_OPTIONS += NO_OPENSSL=1
+else
+        EXTLIBS += -lcrypto
+endif
 
 cgit: $(OBJECTS) libgit
@@ -133,6 +142,6 @@ cgit.o: VERSION
 
 libgit:
-        $(QUIET_SUBDIR0)git $(QUIET_SUBDIR1) NO_CURL=1 libgit.a
-        $(QUIET_SUBDIR0)git $(QUIET_SUBDIR1) NO_CURL=1 xdiff/lib.a
+        $(QUIET_SUBDIR0)git $(QUIET_SUBDIR1) NO_CURL=1 $(GIT_OPTIONS) libgit.a
+        $(QUIET_SUBDIR0)git $(QUIET_SUBDIR1) NO_CURL=1 $(GIT_OPTIONS) xdiff/lib.a
 
 test: all