Replace git@ with https://

[ioerror]

The current build-csky-gcc.py attempts to clone with the git command using git@github.com. This invokes the ssh command which required credentials. I replaced it with git clones that use https rather than git over ssh. I don't think this is strictly needed but I found it useful:

diff --git a/build-csky-gcc.py b/build-csky-gcc.py
index 03728e1..ca4774d 100755
--- a/build-csky-gcc.py
+++ b/build-csky-gcc.py
@@ -985,6 +985,12 @@ def build_toolchain_env(options, mm):
 			cmd = build_cmd(options, "git clone %s %s", (url, source_dirname + "/" + m))
 			cmd += build_cmd(options, "%s", " ".join(opt))
 
+		if url.startswith("https://"):
+			cmd = build_cmd(options, "git clone %s %s", (url, source_dirname + "/" + m))
+			cmd += build_cmd(options, "%s", " ".join(opt))
+
                 if url.startswith("git@"):
 			cmd = build_cmd(options, "git clone %s %s", (url, source_dirname + "/" + m))
 			cmd += build_cmd(options, "%s", " ".join(opt))
@@ -1242,14 +1248,14 @@ profile = {
 }
 
 component = {
-        "binutils"	: { "url"		: "git@github.com:c-sky/binutils-gdb.git",
+        "binutils"	: { "url"		: "https://github.com/c-sky/binutils-gdb.git",
 					"debug" 	: 'CFLAGS="-g -O0" CXXFLAGS="-g -O0"',
 					"default" 	: '--disable-gdb --disable-werror',
 					"worker" 	: [(build_binutils, "")],
 					"tos" 		: {"linux" : "--with-sysroot=yes"},
 				  },
 
-        "gcc"		: { "url"		: "git@github.com:c-sky/gcc.git",
+        "gcc"		: { "url"		: "https://github.com/c-sky/gcc.git",
 					"debug" 	: 'CFLAGS="-g -O0" CXXFLAGS="-g -O0"',
 					"worker" 	: [(build_gcc_initial, "binutils"), (build_gcc, "--libc")],
 					"bos" 		: build_gcc_bos,
@@ -1263,7 +1269,7 @@ component = {
 								: build_gcc_compatibility,
 				  },
 
-        "minilibc"	: { "url"		: "git@github.com:c-sky/toolchain-build.git",
+        "minilibc"	: { "url"		: "https://github.com/c-sky/toolchain-build.git",
 					"worker" 	: [(build_minilibc, "gcc.0")],
 				  },
 
@@ -1274,12 +1280,12 @@ component = {
 					"multilib"	: ["MULTILIB_OPTIONS=mpic"]
 				  },
 
-        "uclibc-ng"	: { "url"		: "git@github.com:c-sky/uclibc-ng.git, --depth=1",
+        "uclibc-ng"	: { "url"		: "https://github.com/c-sky/uclibc-ng.git, --depth=1",
 					"worker" 	: [(build_uclibc_ng, "linux-libc-headers, gcc.0")],
 					"multilib"	: ["MULTILIB_OPTIONS=mpic"]
 				  },
 
-        "glibc"		: { "url"		: "git@github.com:c-sky/glibc.git",
+        "glibc"		: { "url"		: "https://github.com/c-sky/glibc.git",
 					"worker" 	: [(build_glibc, "linux-libc-headers, gcc.0")],
 					"multilib"	: ["MULTILIB_OPTIONS=mpic/mno-pic"],
 					"compatibility"
@@ -1288,7 +1294,7 @@ component = {
 
 	"linux-libc-headers"		:
 				  {
-                                      "url"		: "git@github.com:c-sky/linux-4.9.y.git, --depth=1",
+                                      "url"		: "https://github.com/c-sky/linux-4.9.y.git, --depth=1",
 				  	"worker" 	: [(build_linux_libc_headers, "")],
 				  	"comment"	: "this is dir of linux kernel source code as default because the headers are geted from that :) \
 				  				  also you can set pure linux include dir like '--linux-libc-headers-src=$(your/include/../path),type=inc' \
@@ -1296,7 +1302,7 @@ component = {
 				  },
 	"gdb"	:
 		{
-			"url"	: "git@github.com:c-sky/binutils-gdb.git,  --branch=gdb-7.12-branch-csky",
+			"url"	: "https://github.com/c-sky/binutils-gdb.git,  --branch=gdb-7.12-branch-csky",
 			"default" 	: '--disable-ld --disable-gas --disable-binutils --disable-gold --disable-gprof --without-auto-load-safe-path --with-python=no --disable-sim --enable-install-libbfd',
 			"worker" 	: [(build_gdb, "")],
 		},