Add Elbrus e2k architecture detection

c_check

@@ -84,6 +84,7 @@ $os = Haiku           if ($data =~ /OS_HAIKU/);
 
 $architecture = x86          if ($data =~ /ARCH_X86/);
 $architecture = x86_64       if ($data =~ /ARCH_X86_64/);
+$architecture = e2k          if ($data =~ /ARCH_E2K/);
 $architecture = power        if ($data =~ /ARCH_POWER/);
 $architecture = mips         if ($data =~ /ARCH_MIPS/);
 $architecture = mips64       if ($data =~ /ARCH_MIPS64/);
@@ -124,6 +125,11 @@ if ($architecture eq "zarch") {
     $binary = 64;
 }
 
+if ($architecture eq "e2k") {
+    $defined = 1;
+    $binary = 64;
+}
+
 if ($architecture eq "alpha") {
     $defined = 1;
     $binary = 64;
@@ -223,6 +229,7 @@ if (($architecture eq "mips") || ($architecture eq "mips64")) {
 
 $architecture = x86          if ($data =~ /ARCH_X86/);
 $architecture = x86_64       if ($data =~ /ARCH_X86_64/);
+$architecture = e2k          if ($data =~ /ARCH_E2K/);
 $architecture = power        if ($data =~ /ARCH_POWER/);
 $architecture = mips         if ($data =~ /ARCH_MIPS/);
 $architecture = mips64       if ($data =~ /ARCH_MIPS64/);

ctest.c

@@ -165,3 +165,7 @@ ARCH_LOONGARCH64
 HAVE_C11
 #endif
 
+#if defined(__e2k__)
+ARCH_E2K
+#endif
+