Fix compatibility issues with NetBSD.

1. Using -pthread instead of -lpthread flag
2. Add install option for make
3. Convert char type to unsigned char type before calling isdigit(3)
and tolower(3). Because according to the ctype(3) man page of NetBSD,
the parameter of these functions should be representable as unsigned
char to avoid undefined behaviors.

1 files changed, 2 insertions, 2 deletions

diff --git a/libhfcommon/util.c b/libhfcommon/util.c
index 2fc7f22a..4adb16d7 100644
--- a/libhfcommon/util.c
+++ b/libhfcommon/util.c
@@ -284,11 +284,11 @@ int64_t fastArray64Search(uint64_t* array, size_t arraySz, uint64_t key) {
 }
 
 bool util_isANumber(const char* s) {
-    if (!isdigit(s[0])) {
+    if (!isdigit((unsigned char)s[0])) {
         return false;
     }
     for (int i = 0; s[i]; s++) {
-        if (!isdigit(s[i]) && s[i] != 'x') {
+        if (!isdigit((unsigned char)s[i]) && s[i] != 'x') {
             return false;
         }
     }