libc/time: add lib_strptime

The community deleted strptime due to license reasons, and we replaced it with musl.

Signed-off-by: chenjiahua1 <chenjiahua1@xiaomi.com>

libs/libc/time/CMakeLists.txt

@@ -44,4 +44,8 @@ else()
   list(APPEND SRCS lib_timegm.c lib_gmtime.c lib_gmtimer.c)
 endif()
 
+if(CONFIG_ALLOW_MIT_COMPONENTS)
+  list(APPEND SRCS lib_strptime.c)
+endif()
+
 target_sources(c PRIVATE ${SRCS})

libs/libc/time/Make.defs

@@ -34,6 +34,10 @@ else
 CSRCS += lib_timegm.c lib_gmtime.c lib_gmtimer.c
 endif
 
+ifdef CONFIG_ALLOW_MIT_COMPONENTS
+CSRCS += lib_strptime.c
+endif
+
 # Add the time directory to the build
 
 DEPPATH += --dep-path time