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Fix build for x32

Signed-off-by: Christopher Larson <chris_larson@mentor.com>

Fix build error of src/common/utils.c for x32.

Upstream-Status: Submitted [https://github.com/lttng/lttng-tools/pull/150]

Signed-off-by: Kai Kang <kai.kang@windriver.com>

diff --git a/src/bin/lttng/utils.c b/src/bin/lttng/utils.c
index 0e96ef0c..5c79c8c7 100644
--- a/src/bin/lttng/utils.c
+++ b/src/bin/lttng/utils.c
@@ -158,7 +158,7 @@ unsigned int fls_u32(uint32_t x)
 #define HAS_FLS_U32
 #endif
 
-#if defined(__x86_64)
+#if defined(__x86_64) && !defined(__ILP32__)
 static inline
 unsigned int fls_u64(uint64_t x)
 {
diff --git a/src/common/utils.c b/src/common/utils.c
index 08139e5e..3c389981 100644
--- a/src/common/utils.c
+++ b/src/common/utils.c
@@ -1223,7 +1223,7 @@ static inline unsigned int fls_u32(uint32_t x)
 #define HAS_FLS_U32
 #endif
 
-#if defined(__x86_64)
+#if defined(__x86_64) && !defined(__ILP32__)
 static inline
 unsigned int fls_u64(uint64_t x)
 {