mktemp: warning fix for x86 and l-preview

mktemp is almost not used in busybox, so rename
the function in the mktemp applet to prevent bionic
warning on include.

Change-Id: I4332d3b957aafd6174eb7fe098b099eae779d3c9

Android.mk

@@ -160,7 +160,6 @@ LOCAL_C_INCLUDES := $(bb_gen)/minimal/include $(BUSYBOX_C_INCLUDES)
 LOCAL_CFLAGS := -Dmain=busybox_driver $(BUSYBOX_CFLAGS)
 LOCAL_CFLAGS += \
   -DRECOVERY_VERSION \
-  -Dmktemp=busybox_mktemp \
   -Dgetusershell=busybox_getusershell \
   -Dsetusershell=busybox_setusershell \
   -Dendusershell=busybox_endusershell \
@@ -225,7 +224,6 @@ LOCAL_SRC_FILES := $(BUSYBOX_SRC_FILES)
 LOCAL_C_INCLUDES := $(bb_gen)/full/include $(BUSYBOX_C_INCLUDES)
 LOCAL_CFLAGS := $(BUSYBOX_CFLAGS)
 LOCAL_CFLAGS += \
-  -Dmktemp=busybox_mktemp \
   -Dgetusershell=busybox_getusershell \
   -Dsetusershell=busybox_setusershell \
   -Dendusershell=busybox_endusershell \

android/libc/mktemp.c

@@ -58,7 +58,7 @@ _mktemp(char *path)
 }
 
 char *
-mktemp(char *path)
+bb_mktemp(char *path)
 {
 	return (_mktemp(path));
 }

debianutils/mktemp.c

@@ -53,6 +53,10 @@
 
 #include "libbb.h"
 
+#ifdef __BIONIC__
+#define mktemp(s) bb_mktemp(s)
+#endif
+
 int mktemp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int mktemp_main(int argc UNUSED_PARAM, char **argv)
 {

include/android.h

@@ -30,6 +30,7 @@ void endutent(void);
 
 /* defined in bionic/mktemp.c */
 char *mkdtemp(char *);
+char *bb_mktemp(char *);
 
 /* SYSCALLS */
 int    stime(time_t *);

libbb/platform.c

@@ -86,6 +86,9 @@ void* FAST_FUNC memrchr(const void *s, int c, size_t n)
 #endif
 
 #ifndef HAVE_MKDTEMP
+#ifdef __BIONIC__
+#define mktemp(s) bb_mktemp(s)
+#endif
 /* This is now actually part of POSIX.1, but was only added in 2008 */
 char* FAST_FUNC mkdtemp(char *template)
 {