Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -838,10 +838,27 @@
 	AC_MSG_ERROR(
 		[Floating point implementation does not conform to IEEE 754!])])
 
 case "$host_cpu" in
 arm* | earm*)
+	AC_MSG_CHECKING(for blx)
+	AC_COMPILE_IFELSE([
+		AC_LANG_PROGRAM([], [
+			#if !defined(__arm64__) && !defined(__arch64__) && \
+			    !defined(__ARM64_ARCH_8__)
+			__asm__ __volatile__ (
+				"blx	r12"
+			);
+			#endif
+		])
+	], [
+		AC_DEFINE(HAVE_BLX, 1, [Whether we have blx])
+		AC_MSG_RESULT(yes)
+	], [
+		AC_MSG_RESULT(no)
+	])
+
 	AC_MSG_CHECKING(for VFP2 or above)
 	AC_COMPILE_IFELSE([
 		AC_LANG_PROGRAM([], [
 			#if !defined(__arm64__) && !defined(__aarch64__) && \
 			    !defined(__ARM64_ARCH_8__)

Index: src/forwarding/forwarding-arm-elf.S
==================================================================
--- src/forwarding/forwarding-arm-elf.S
+++ src/forwarding/forwarding-arm-elf.S
@@ -53,11 +53,15 @@
 
 	mov	r12, r0
 	ldr	r0, [sp, #0]
 	mov	r1, r4
 	ldr	r2, [sp, #4]
+#ifdef HAVE_BLX
 	blx	r12
+#else
+	bl	r12
+#endif
 
 	cmp	r0, #0
 	beq	0f
 	ldr	r1, [sp, #0]
 	cmp	r0, r1
@@ -109,11 +113,15 @@
 
 	mov	r12, r0
 	ldr	r0, [sp, #4]
 	mov	r1, r4
 	ldr	r2, [sp, #8]
+#ifdef HAVE_BLX
 	blx	r12
+#else
+	bl	r12
+#endif
 
 	cmp	r0, #0
 	beq	0f
 	ldr	r1, [sp, #4]
 	cmp	r0, r1