From fd93bd80b68ce67ab32e3c7545a497d281b539e4 Mon Sep 17 00:00:00 2001
From: Mikhail Burakov <mburakov@mailbox.org>
Date: Sun, 2 Apr 2023 20:33:58 +0200
Subject: Provide simple logging in addition to syslog

---
 utils.h | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/utils.h b/utils.h
index 6842d94..0207cbe 100644
--- a/utils.h
+++ b/utils.h
@@ -24,15 +24,19 @@ extern "C" {
 
 #define STR_IMPL(op) #op
 #define STR(op) STR_IMPL(op)
+#define LENGTH(op) (sizeof(op) / sizeof *(op))
+#define LOG(fmt, ...) \
+  fprintf(stderr, __FILE__ ":" STR(__LINE__) " " fmt "\n", ##__VA_ARGS__)
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
+#ifdef USE_SYSLOG_LOGGING
 #define LOG(log_level, fmt, ...) \
   LogImpl(log_level, __FILE__ ":" STR(__LINE__) " " fmt "\n", ##__VA_ARGS__)
 #define LOGD(...) LOG(kLogLevelDebug, __VA_ARGS__)
 #define LOGI(...) LOG(kLogLevelInfo, __VA_ARGS__)
 #define LOGW(...) LOG(kLogLevelWarning, __VA_ARGS__)
 #define LOGE(...) LOG(kLogLevelError, __VA_ARGS__)
-#define LENGTH(op) (sizeof(op) / sizeof *(op))
-#define MIN(a, b) ((a) < (b) ? (a) : (b))
-#define MAX(a, b) ((a) > (b) ? (a) : (b))
 
 enum LogLevel {
   kLogLevelDebug = 0,
@@ -43,7 +47,7 @@ enum LogLevel {
 
 void LogImpl(enum LogLevel log_level, const char* fmt, ...)
     __attribute__((format(printf, 2, 3)));
-unsigned long long MillisNow(void);
+#endif  // USE_SYSLOG_LOGGING
 
 #ifdef __cplusplus
 }  // extern "C"
-- 
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