completely disable 64-bit time_t on 32-bit systems

This overrides the Yocto default and may cause your program to crash if Swift
packages link against other packages that do not have this disabled. Caveat
emptor.

Author: lhoward

classes/swift-common.bbclass

@@ -1,6 +1,11 @@
 # avoid conflicts with meta-clang
 TOOLCHAIN = "gcc"
 
+# force disable GLIBC_64BIT_TIME_FLAGS until SwiftNIO and other common packages
+# are updated to support 64-bit time_t on 32-bit systems. ABI incompatibility
+# may cause your program to crash; you have been warned.
+TARGET_CC_ARCH:remove:arm = "${GLIBC_64BIT_TIME_FLAGS}"
+
 # appears to cause segfault
 TARGET_CC_ARCH:remove:aarch64 = "-mbranch-protection=standard"