diff --git a/CMakeLists.txt b/CMakeLists.txt
index 40c352d..4aa6f53 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,7 +30,7 @@ if(UNIX)
   set(exec_prefix "\${prefix}")
   set(libdir "\${exec_prefix}/lib")
   set(includedir "\${prefix}/include")
-  set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wall -Wuninitialized -Wstrict-prototypes -Wformat -Wformat-security")
+  set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wall -Wuninitialized -Wstrict-prototypes -Wformat -Wformat-security -Wunused-parameter")
   configure_file("${CMAKE_CURRENT_SOURCE_DIR}/libcpuid.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libcpuid.pc" ESCAPE_QUOTES
                  @ONLY)
   install(FILES "${PROJECT_BINARY_DIR}/libcpuid.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
diff --git a/libcpuid/libcpuid_util.c b/libcpuid/libcpuid_util.c
index 4362cc7..f2281f8 100644
--- a/libcpuid/libcpuid_util.c
+++ b/libcpuid/libcpuid_util.c
@@ -246,10 +246,10 @@ void debug_print_lbits(int debuglevel, uint64_t mask)
 	int i, first = 0;
 	for (i = 0; i < 64; i++) if (mask & (((uint64_t) 1) << i)) {
 		if (first) first = 0;
-		else debugf(2, " + ");
-		debugf(2, "LBIT(%d)", i);
+		else debugf(debuglevel, " + ");
+		debugf(debuglevel, "LBIT(%d)", i);
 	}
-	debugf(2, "\n");
+	debugf(debuglevel, "\n");
 }
 
 /* Functions to manage cpu_affinity_mask_t type
diff --git a/libcpuid/recog_amd.c b/libcpuid/recog_amd.c
index c961d7a..81cf3f9 100644
--- a/libcpuid/recog_amd.c
+++ b/libcpuid/recog_amd.c
@@ -596,7 +596,7 @@ static struct amd_code_and_bits_t decode_amd_codename_part1(const char *bs)
 	return result;
 }
 
-static void decode_amd_codename(struct cpu_raw_data_t* raw, struct cpu_id_t* data, struct internal_id_info_t* internal)
+static void decode_amd_codename(struct cpu_id_t* data, struct internal_id_info_t* internal)
 {
 	struct amd_code_and_bits_t code_and_bits = decode_amd_codename_part1(data->brand_str);
 	int i = 0;
@@ -637,7 +637,7 @@ int cpuid_identify_amd(struct cpu_raw_data_t* raw, struct cpu_id_t* data, struct
 	else
 		decode_amd_cache_info(raw, data);
 	decode_amd_number_of_cores(raw, data);
-	decode_amd_codename(raw, data, internal);
+	decode_amd_codename(data, internal);
 	return 0;
 }
 
diff --git a/libcpuid/recog_intel.c b/libcpuid/recog_intel.c
index 428885a..c4dd9d9 100644
--- a/libcpuid/recog_intel.c
+++ b/libcpuid/recog_intel.c
@@ -622,9 +622,7 @@ static void decode_intel_oldstyle_cache_info(struct cpu_raw_data_t* raw, struct
 	}
 }
 
-static int decode_intel_extended_topology(struct cpu_raw_data_t* raw,
-                                           struct cpu_id_t* data,
-                                           struct internal_id_info_t* internal)
+static int decode_intel_extended_topology(struct cpu_raw_data_t* raw, struct cpu_id_t* data)
 {
 	int i, level_type, num_smt = -1, num_core = -1;
 
@@ -651,14 +649,12 @@ static int decode_intel_extended_topology(struct cpu_raw_data_t* raw,
 	return 1;
 }
 
-static void decode_intel_number_of_cores(struct cpu_raw_data_t* raw,
-                                         struct cpu_id_t* data,
-                                         struct internal_id_info_t* internal)
+static void decode_intel_number_of_cores(struct cpu_raw_data_t* raw, struct cpu_id_t* data)
 {
 	int logical_cpus = -1, num_cores = -1;
 
 	if (raw->basic_cpuid[0][EAX] >= 11) {
-		if (decode_intel_extended_topology(raw, data, internal)) return;
+		if (decode_intel_extended_topology(raw, data)) return;
 	}
 
 	if (raw->basic_cpuid[0][EAX] >= 1) {
@@ -941,7 +937,7 @@ int cpuid_identify_intel(struct cpu_raw_data_t* raw, struct cpu_id_t* data, stru
 	} else if (raw->basic_cpuid[0][EAX] >= 2) {
 		decode_intel_oldstyle_cache_info(raw, data);
 	}
-	decode_intel_number_of_cores(raw, data, internal);
+	decode_intel_number_of_cores(raw, data);
 	data->purpose = cpuid_identify_purpose_intel(raw);
 
 	brand = get_brand_code_and_bits(data);