http: remove cURL

We previously used cURL to support HTTP proxies.  Now that we've added
this support natively, we can remove the curl dependency.

Author: ethomson

CMakeLists.txt

@@ -60,7 +60,6 @@ OPTION(USE_HTTPS			"Enable HTTPS support. Can be set to a specific backend" ON)
 OPTION(USE_GSSAPI			"Link with libgssapi for SPNEGO auth"			OFF)
 OPTION(USE_STANDALONE_FUZZERS		"Enable standalone fuzzers (compatible with gcc)"	OFF)
 OPTION(VALGRIND				"Configure build for valgrind"				OFF)
-OPTION(CURL				"Use curl for HTTP if available"			 ON)
 OPTION(USE_EXT_HTTP_PARSER		"Use system HTTP_Parser if available"			 ON)
 OPTION(DEBUG_POOL			"Enable debug pool allocator"				OFF)
 OPTION(ENABLE_WERROR			"Enable compilation with -Werror"			OFF)

src/CMakeLists.txt

@@ -125,17 +125,6 @@ IF (WIN32 AND WINHTTP)
 
 	LIST(APPEND LIBGIT2_LIBS "rpcrt4" "crypt32" "ole32")
 	LIST(APPEND LIBGIT2_PC_LIBS "-lrpcrt4" "-lcrypt32" "-lole32")
-ELSE ()
-	IF (CURL)
-		FIND_PKGLIBRARIES(CURL libcurl)
-	ENDIF ()
-	IF (CURL_FOUND)
-		SET(GIT_CURL 1)
-		LIST(APPEND LIBGIT2_SYSTEM_INCLUDES ${CURL_INCLUDE_DIRS})
-		LIST(APPEND LIBGIT2_LIBS ${CURL_LIBRARIES})
-		LIST(APPEND LIBGIT2_PC_LIBS ${CURL_LDFLAGS})
-	ENDIF()
-	ADD_FEATURE_INFO(cURL GIT_CURL "cURL for HTTP proxy support")
 ENDIF()
 
 IF (USE_HTTPS)

src/features.h.in

@@ -22,7 +22,6 @@
 
 #cmakedefine GIT_GSSAPI 1
 #cmakedefine GIT_WINHTTP 1
-#cmakedefine GIT_CURL 1
 
 #cmakedefine GIT_HTTPS 1
 #cmakedefine GIT_OPENSSL 1

src/global.c

@@ -13,7 +13,6 @@
 #include "filter.h"
 #include "merge_driver.h"
 #include "streams/tls.h"
-#include "streams/curl.h"
 #include "streams/mbedtls.h"
 #include "streams/openssl.h"
 #include "thread-utils.h"
@@ -70,7 +69,6 @@ static int init_common(void)
 		(ret = git_transport_ssh_global_init()) == 0 &&
 		(ret = git_tls_stream_global_init()) == 0 &&
 		(ret = git_openssl_stream_global_init()) == 0 &&
-		(ret = git_curl_stream_global_init()) == 0 &&
 		(ret = git_mbedtls_stream_global_init()) == 0)
 		ret = git_mwindow_global_init();