Also use explicit_memset (NetBSD) with cmake, scons and meson

SConstruct

@@ -388,6 +388,7 @@ if 1:
 		'dup2',
 		'epoll_ctl',
 		'explicit_bzero',
+		'explicit_memset',
 		'fork',
 		'getcwd',
 		'gethostbyname',

src/CMakeLists.txt

@@ -185,6 +185,7 @@ check_function_exists(issetugid HAVE_ISSETUGID)
 check_function_exists(inet_pton HAVE_INET_PTON)
 check_function_exists(memset_s HAVE_MEMSET_S)
 check_function_exists(explicit_bzero HAVE_EXPLICIT_BZERO)
+check_function_exists(explicit_memset HAVE_EXPLICIT_MEMSET)
 check_symbol_exists(clock_gettime "time.h" HAVE_CLOCK_GETTIME)
 if (NOT HAVE_CLOCK_GETTIME)
 	check_library_exists(rt clock_gettime "time.h" HAVE_CLOCK_GETTIME)

src/meson.build

@@ -151,6 +151,7 @@ conf_data.set('HAVE_ISSETUGID', compiler.has_function('issetugid', args: defs))
 conf_data.set('HAVE_INET_PTON', compiler.has_function('inet_pton', args: defs))
 conf_data.set('HAVE_MEMSET_S', compiler.has_function('memset_s', args: defs))
 conf_data.set('HAVE_EXPLICIT_BZERO', compiler.has_function('explicit_bzero', args: defs))
+conf_data.set('HAVE_EXPLICIT_MEMSET', compiler.has_function('explicit_memset', args: defs))
 
 conf_data.set('HAVE_CLOCK_GETTIME', compiler.has_header_symbol('time.h', 'clock_gettime'))
 clock_lib = []

src/safe_memclear.c

@@ -42,7 +42,7 @@ void safe_memclear(void *s, size_t n) {
 #elif defined(HAVE_EXPLICIT_BZERO)
 	explicit_bzero(s, n);
 #elif defined(HAVE_EXPLICIT_MEMSET)
-    explicit_memset(s, 0, n);
+	explicit_memset(s, 0, n);
 #else
 	safe_memset(s, 0, n);
 #endif