macOS build with latest clang from Xcode

A bunch of new warnings appeared by default on macOS compiler provided with Xcode,
including on every usage of sprintf(). Suppress those for now.

The issues with utilizing WANT_ASAN=1 on the make command line with macOS seem
to be resolved in this latest version, so allow it to be specified. Don't specify
it if using a problematic clang version.

sys/share/uudecode.c

@@ -60,10 +60,6 @@
 #endif
 #endif
 
-#if __APPLE__
-#include "config.h"
-#endif
-
 /*
  * uudecode [input]
  *
@@ -85,7 +81,9 @@
 #include <stdlib.h>
 #endif
 
-#include "warnings.h"
+/* #include "warnings.h" */
+#define DISABLE_WARNING_UNREACHABLE_CODE
+#define RESTORE_WARNINGS
 
 static void decode(FILE *, FILE *);
 static void outdec(char *, FILE *, int);
@@ -130,7 +128,7 @@ main(int argc, char **argv)
     }
     (void) sscanf(buf, "begin %o %s", &mode, dest);
 
-#if !defined(MSDOS) && !defined(VMS) && !defined(WIN32) && !defined(MACOS)
+#if !defined(MSDOS) && !defined(VMS) && !defined(WIN32) && !defined(__APPLE__)
     /* handle ~user/file format */
     if (dest[0] == '~') {
         char *sl;
@@ -154,7 +152,7 @@ main(int argc, char **argv)
         strcat(dnbuf, sl);
         strcpy(dest, dnbuf);
     }
-#endif /* !defined(MSDOS) && !defined(VMS) */
+#endif /* !MSDOS && !VMS && !WIN32 && !__APPLE__  */
 
 /* create output file */
 #if defined(MSDOS) || defined(WIN32)
@@ -239,7 +237,8 @@ outdec(char *p, FILE *f, int n)
         putc(c3, f);
 }
 
-#if !defined(MSDOS) && !defined(VMS) && !defined(WIN32) && !defined(MACOS)
+#if !defined(MSDOS) && !defined(VMS) && !defined(WIN32) && !defined(__APPLE__)
+
 /*
  * Return the ptr in sp at which the character c appears;
  * NULL if not found

sys/unix/hints/include/compiler.370

@@ -29,9 +29,9 @@ CCFLAGS = -g
 #    CPLUSPLUS_NEED_DEPSUPPRESS = 1 C++ -Wno-deprecated-copy,
 #                                       -Wno-deprecated-declarations
 
-#ifeq "$(WANT_ASAN)" "1"
-#NEED_ASAN=1
-#endif
+ifeq "$(WANT_ASAN)" "1"
+USE_ASAN=1
+endif
 
 # If you want to override the compiler detection just carried out
 # uncomment one of the following pairs. Note, however, that
@@ -63,10 +63,6 @@ CFLAGS+=-Wmissing-prototypes
 CFLAGS+=-Wold-style-definition
 CFLAGS+=-Wstrict-prototypes
 
-#ifeq "$(NEED_ASAN)" "1"
-#CFLAGS+=-fsanitize=address
-#endif
-
 #detection of clang vs gcc
 CCISCLANG := $(shell echo `$(CC) --version` | grep clang)
 ifeq "$(CCISCLANG)" ""
@@ -89,6 +85,10 @@ endif   # GCC greater than or equal to 9
 else   # gcc or clang?
 CXX=clang++ -std=gnu++11
 # clang-specific follows
+CLANGGTEQ14 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \>= 14)
+ifeq "$(CLANGGTEQ14)" "1"
+CFLAGS+=-Wno-deprecated-declarations
+endif
 # none
 endif  # clang-specific ends here
 
@@ -139,6 +139,9 @@ CLANGPPGTEQ14 := $(shell expr `$(CXX) -dumpversion | cut -f1 -d.` \>= 14)
 ifeq "$(CLANGPPGTEQ9)" "1"
 #CCXXFLAGS+=-Wformat-overflow
 endif
+ifeq "$(CLANGPPGTEQ14)" "1"
+CPLUSPLUS_NEED_DEPSUPPRESS=1
+endif
 ifdef CPLUSPLUS_NEED_DEPSUPPRESS
 CCXXFLAGS+=-Wno-deprecated
 CCXXFLAGS+=-Wno-deprecated-declarations

sys/unix/hints/linux.370

@@ -56,7 +56,8 @@ endif  # WANT_WIN_QT
 #
 #-INCLUDE multiw-3.370
 
-ifeq "$(NEED_ASAN)" "1"
+ifeq "$(USE_ASAN)" "1"
+CFLAGS+=-fsanitize=address
 LFLAGS+=-fsanitize=address
 endif
 

sys/unix/hints/macOS.370

@@ -72,10 +72,9 @@ endif   # WANT_WIN_QT
 
 #-INCLUDE multiw-3.370
 
-ifdef NEED_ASAN
-ifeq "$(NEED_ASAN)" "1"
-#LFLAGS +=-fsanitize=address
-endif
+ifeq "$(USE_ASAN)" "1"
+CFLAGS +=-fsanitize=address
+LFLAGS +=-fsanitize=address
 endif
 
 # NetHack sources control