Fix bytecode and autoitea06 for Apple-style universal builds (bb #2030)

Bytecode needs to enable both PPC and X86, link in all targets,
and autoit needs fpu_endian == cpu_endian for universal builds.

libclamav/c++/bytecode2llvm.cpp

@@ -2064,7 +2064,11 @@ int bytecode_init(void)
 
     // If we have a native target, initialize it to ensure it is linked in and
     // usable by the JIT.
+#ifndef AC_APPLE_UNIVERSAL_BUILD
     InitializeNativeTarget();
+#else
+    InitializeAllTargets();
+#endif
 
     if (!llvm_is_multithreaded()) {
 	//TODO:cli_dbgmsg

libclamav/c++/configure.ac

@@ -25,6 +25,7 @@ AM_SILENT_RULES([yes])
 
 cxxset=${CXXFLAGS+set}
 AC_PROG_CXX
+AC_C_BIGENDIAN
 
 if test "$cxxset" != set; then
 # don't use the default -O2 -g because -g bloats the C++ binaries too much
@@ -210,6 +211,10 @@ if test "$enable_alltargets" = "yes"; then
 	build_ppc=yes
 	build_arm=yes
 fi
+if test "$ac_cv_c_bigendian" = "universal"; then
+    build_x86 = yes
+    build_ppc = yes
+fi
 AM_CONDITIONAL(BUILD_X86, [test "$build_x86" = "yes"])
 AM_CONDITIONAL(BUILD_PPC, [test "$build_ppc" = "yes"])
 AM_CONDITIONAL(BUILD_ARM, [test "$build_arm" = "yes"])

libclamav/c++/detect.cpp

@@ -116,8 +116,10 @@ void cli_detect_env_jit(struct cli_environment *env)
 	    earch = arch_unknown;
 	    break;
     }
+#ifndef AC_APPLE_UNIVERSAL_BUILD
     if (conflicts)
 	warn_assumptions("CPU architecture", env->arch, earch);
+#endif
     if (earch != arch_unknown)
 	env->arch = earch;
 

m4/acinclude.m4

@@ -605,6 +605,9 @@ fi
 if ${GREP-grep} elleemme conftest.$ac_objext >/dev/null 2>&1 ; then
 	ac_cv_c_fpu_bigendian=no
 fi
+if test "$ac_cv_c_bigendian" = "universal"; then
+        ac_cv_c_fpu_bigendian=universal
+fi
 ])
 fi
 
@@ -619,6 +622,10 @@ case $ac_cv_c_fpu_bigendian in
 		AC_DEFINE([FPU_WORDS_BIGENDIAN], 0, [FPU byte ordering is little endian])
                 have_autoitea06="yes"
 		;;
+	universal)
+	        AC_DEFINE([FPU_WORDS_BIGENDIAN], [WORDS_BIGENDIAN], [FPU byte ordering matches CPU])
+                have_autoitea06="yes"
+		;;
 	*)
 		AC_MSG_WARN([Unable to determine FPU endianess, some features may not be available in this build])
 esac