utils/checkpackagelib/lib_mk.py: check typo in define

Check typo in define to detect SMAKE_LINUX_CONFIG_FIXUPS in smack
(fixed by 41e2132fbe8a8fc237ca4a2cd2eff9bd9ced09a6)

The new expression will catch "SMAKE_CONF_OPTS" as well as
"define SMAKE_LINUX_CONFIG_FIXUPS"

Two modifications were made:
 - add (define\s+)? which will match "define " but also an empty value.
   Thanks to this, the second group will always contain the variable
   name.
 - remove \s*(\+|)= which seems superfluous

Also, add GCC_TARGET in ALLOWED variable to avoid the following
warnings:

arch/arch.mk:12: possible typo: GCC_TARGET_ARCH -> *ARCH*
arch/arch.mk:13: possible typo: GCC_TARGET_ABI -> *ARCH*
arch/arch.mk:14: possible typo: GCC_TARGET_NAN -> *ARCH*
arch/arch.mk:15: possible typo: GCC_TARGET_FP32_MODE -> *ARCH*
arch/arch.mk:16: possible typo: GCC_TARGET_CPU -> *ARCH*
arch/arch.mk:17: possible typo: GCC_TARGET_FPU -> *ARCH*
arch/arch.mk:18: possible typo: GCC_TARGET_FLOAT_ABI -> *ARCH*
arch/arch.mk:19: possible typo: GCC_TARGET_MODE -> *ARCH*

Reviewed-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

utils/checkpackagelib/lib_mk.py

@@ -230,6 +230,7 @@ class TypoInPackageVariable(_CheckFunction):
         "BR_CCACHE_INITIAL_SETUP",
         "BR_LIBC",
         "BR_NO_CHECK_HASH_FOR",
+        "GCC_TARGET",
         "LINUX_EXTENSIONS",
         "LINUX_POST_PATCH_HOOKS",
         "LINUX_TOOLS",
@@ -242,7 +243,7 @@ class TypoInPackageVariable(_CheckFunction):
         "TARGET_FINALIZE_HOOKS",
         "TARGETS_ROOTFS",
         "XTENSA_CORE_NAME"]))
-    VARIABLE = re.compile(r"^([A-Z0-9_]+_[A-Z0-9_]+)\s*(\+|)=")
+    VARIABLE = re.compile(r"^(define\s+)?([A-Z0-9_]+_[A-Z0-9_]+)")
 
     def before(self):
         package, _ = os.path.splitext(os.path.basename(self.filename))
@@ -252,7 +253,7 @@ class TypoInPackageVariable(_CheckFunction):
         # linux extensions do not use LINUX_EXT_ prefix for variables
         package = package.replace("LINUX_EXT_", "")
         self.package = package
-        self.REGEX = re.compile(r"^(HOST_|ROOTFS_)?({}_[A-Z0-9_]+)".format(package))
+        self.REGEX = re.compile(r"(HOST_|ROOTFS_)?({}_[A-Z0-9_]+)".format(package))
         self.FIND_VIRTUAL = re.compile(
             r"^{}_PROVIDES\s*(\+|)=\s*(.*)".format(package))
         self.virtual = []
@@ -262,7 +263,7 @@ class TypoInPackageVariable(_CheckFunction):
         if m is None:
             return
 
-        variable = m.group(1)
+        variable = m.group(2)
 
         # allow to set variables for virtual package this package provides
         v = self.FIND_VIRTUAL.search(text)