diff --git a/arch/AArch64/AArch64Module.c b/arch/AArch64/AArch64Module.c
index 44965cf9d..35b08bdaa 100644
--- a/arch/AArch64/AArch64Module.c
+++ b/arch/AArch64/AArch64Module.c
@@ -38,8 +38,4 @@ cs_err AArch64_option(cs_struct *handle, cs_opt_type type, size_t value)
 	return CS_ERR_OK;
 }
 
-void AArch64_destroy(cs_struct *handle)
-{
-}
-
 #endif
diff --git a/arch/AArch64/AArch64Module.h b/arch/AArch64/AArch64Module.h
index e2b4a144a..73a132de8 100644
--- a/arch/AArch64/AArch64Module.h
+++ b/arch/AArch64/AArch64Module.h
@@ -8,6 +8,5 @@
 
 cs_err AArch64_global_init(cs_struct *ud);
 cs_err AArch64_option(cs_struct *handle, cs_opt_type type, size_t value);
-void AArch64_destroy(cs_struct *handle);
 
 #endif
diff --git a/arch/ARM/ARMModule.c b/arch/ARM/ARMModule.c
index 3287fa9c9..642ce3724 100644
--- a/arch/ARM/ARMModule.c
+++ b/arch/ARM/ARMModule.c
@@ -57,8 +57,4 @@ cs_err ARM_option(cs_struct *handle, cs_opt_type type, size_t value)
 	return CS_ERR_OK;
 }
 
-void ARM_destroy(cs_struct *handle)
-{
-}
-
 #endif
diff --git a/arch/ARM/ARMModule.h b/arch/ARM/ARMModule.h
index 57619610a..f84497212 100644
--- a/arch/ARM/ARMModule.h
+++ b/arch/ARM/ARMModule.h
@@ -8,6 +8,5 @@
 
 cs_err ARM_global_init(cs_struct *ud);
 cs_err ARM_option(cs_struct *handle, cs_opt_type type, size_t value);
-void ARM_destroy(cs_struct *handle);
 
 #endif
diff --git a/arch/Mips/MipsModule.c b/arch/Mips/MipsModule.c
index 07740da16..44351f590 100644
--- a/arch/Mips/MipsModule.c
+++ b/arch/Mips/MipsModule.c
@@ -57,8 +57,4 @@ cs_err Mips_option(cs_struct *handle, cs_opt_type type, size_t value)
 	return CS_ERR_OK;
 }
 
-void Mips_destroy(cs_struct *handle)
-{
-}
-
 #endif
diff --git a/arch/Mips/MipsModule.h b/arch/Mips/MipsModule.h
index ffc5648b5..d1aa2cfff 100644
--- a/arch/Mips/MipsModule.h
+++ b/arch/Mips/MipsModule.h
@@ -8,6 +8,5 @@
 
 cs_err Mips_global_init(cs_struct *ud);
 cs_err Mips_option(cs_struct *handle, cs_opt_type type, size_t value);
-void Mips_destroy(cs_struct *handle);
 
 #endif
diff --git a/arch/PowerPC/PPCModule.c b/arch/PowerPC/PPCModule.c
index 7a29da00b..58956cc37 100644
--- a/arch/PowerPC/PPCModule.c
+++ b/arch/PowerPC/PPCModule.c
@@ -42,8 +42,4 @@ cs_err PPC_option(cs_struct *handle, cs_opt_type type, size_t value)
 	return CS_ERR_OK;
 }
 
-void PPC_destroy(cs_struct *handle)
-{
-}
-
 #endif
diff --git a/arch/PowerPC/PPCModule.h b/arch/PowerPC/PPCModule.h
index 2de0ea574..079cf600f 100644
--- a/arch/PowerPC/PPCModule.h
+++ b/arch/PowerPC/PPCModule.h
@@ -8,6 +8,5 @@
 
 cs_err PPC_global_init(cs_struct *ud);
 cs_err PPC_option(cs_struct *handle, cs_opt_type type, size_t value);
-void PPC_destroy(cs_struct *handle);
 
 #endif
diff --git a/arch/Sparc/SparcModule.c b/arch/Sparc/SparcModule.c
index 566354e80..2e42f7931 100644
--- a/arch/Sparc/SparcModule.c
+++ b/arch/Sparc/SparcModule.c
@@ -42,8 +42,4 @@ cs_err Sparc_option(cs_struct *handle, cs_opt_type type, size_t value)
 	return CS_ERR_OK;
 }
 
-void Sparc_destroy(cs_struct *handle)
-{
-}
-
 #endif
diff --git a/arch/Sparc/SparcModule.h b/arch/Sparc/SparcModule.h
index a383f2860..1caaac1a4 100644
--- a/arch/Sparc/SparcModule.h
+++ b/arch/Sparc/SparcModule.h
@@ -8,6 +8,5 @@
 
 cs_err Sparc_global_init(cs_struct *ud);
 cs_err Sparc_option(cs_struct *handle, cs_opt_type type, size_t value);
-void Sparc_destroy(cs_struct *handle);
 
 #endif
diff --git a/arch/SystemZ/SystemZModule.c b/arch/SystemZ/SystemZModule.c
index d3cf71c02..2d83da05c 100644
--- a/arch/SystemZ/SystemZModule.c
+++ b/arch/SystemZ/SystemZModule.c
@@ -41,8 +41,4 @@ cs_err SystemZ_option(cs_struct *handle, cs_opt_type type, size_t value)
 	return CS_ERR_OK;
 }
 
-void SystemZ_destroy(cs_struct *handle)
-{
-}
-
 #endif
diff --git a/arch/SystemZ/SystemZModule.h b/arch/SystemZ/SystemZModule.h
index f605d9623..ad403baf5 100644
--- a/arch/SystemZ/SystemZModule.h
+++ b/arch/SystemZ/SystemZModule.h
@@ -8,6 +8,5 @@
 
 cs_err SystemZ_global_init(cs_struct *ud);
 cs_err SystemZ_option(cs_struct *handle, cs_opt_type type, size_t value);
-void SystemZ_destroy(cs_struct *handle);
 
 #endif
diff --git a/arch/X86/X86Module.c b/arch/X86/X86Module.c
index 8c51b9126..ef0357c71 100644
--- a/arch/X86/X86Module.c
+++ b/arch/X86/X86Module.c
@@ -83,8 +83,4 @@ cs_err X86_option(cs_struct *handle, cs_opt_type type, size_t value)
 	return CS_ERR_OK;
 }
 
-void X86_destroy(cs_struct *handle)
-{
-}
-
 #endif
diff --git a/arch/X86/X86Module.h b/arch/X86/X86Module.h
index 464ad9cfb..53d13eded 100644
--- a/arch/X86/X86Module.h
+++ b/arch/X86/X86Module.h
@@ -8,6 +8,5 @@
 
 cs_err X86_global_init(cs_struct *ud);
 cs_err X86_option(cs_struct *handle, cs_opt_type type, size_t value);
-void X86_destroy(cs_struct *handle);
 
 #endif
diff --git a/arch/XCore/XCoreModule.c b/arch/XCore/XCoreModule.c
index e475d7558..6b4aa66ff 100644
--- a/arch/XCore/XCoreModule.c
+++ b/arch/XCore/XCoreModule.c
@@ -38,8 +38,4 @@ cs_err XCore_option(cs_struct *handle, cs_opt_type type, size_t value)
 	return CS_ERR_OK;
 }
 
-void XCore_destroy(cs_struct *handle)
-{
-}
-
 #endif
diff --git a/arch/XCore/XCoreModule.h b/arch/XCore/XCoreModule.h
index 3f2d608bb..c4a7d2b26 100644
--- a/arch/XCore/XCoreModule.h
+++ b/arch/XCore/XCoreModule.h
@@ -8,6 +8,5 @@
 
 cs_err XCore_global_init(cs_struct *ud);
 cs_err XCore_option(cs_struct *handle, cs_opt_type type, size_t value);
-void XCore_destroy(cs_struct *handle);
 
 #endif
diff --git a/cs.c b/cs.c
index f69cb4237..f0a64971d 100644
--- a/cs.c
+++ b/cs.c
@@ -62,7 +62,8 @@
 #include "arch/XCore/XCoreModule.h"
 
 
-cs_err (*cs_arch_init[MAX_ARCH])(cs_struct *) = {
+// constructor initialization for all archs
+static cs_err (*cs_arch_init[MAX_ARCH])(cs_struct *) = {
 #ifdef CAPSTONE_HAS_ARM
 	ARM_global_init,
 #else
@@ -105,7 +106,8 @@ cs_err (*cs_arch_init[MAX_ARCH])(cs_struct *) = {
 #endif
 };
 
-cs_err (*cs_arch_option[MAX_ARCH]) (cs_struct *, cs_opt_type, size_t value) = {
+// support cs_option() for all archs
+static cs_err (*cs_arch_option[MAX_ARCH]) (cs_struct *, cs_opt_type, size_t value) = {
 #ifdef CAPSTONE_HAS_ARM
 	ARM_option,
 #else
@@ -148,49 +150,8 @@ cs_err (*cs_arch_option[MAX_ARCH]) (cs_struct *, cs_opt_type, size_t value) = {
 #endif
 };
 
-void (*cs_arch_destroy[MAX_ARCH]) (cs_struct *) = {
-#ifdef CAPSTONE_HAS_ARM
-	ARM_destroy,
-#else
-	NULL,
-#endif
-#ifdef CAPSTONE_HAS_ARM64
-	AArch64_destroy,
-#else
-	NULL,
-#endif
-#ifdef CAPSTONE_HAS_MIPS
-	Mips_destroy,
-#else
-	NULL,
-#endif
-#ifdef CAPSTONE_HAS_X86
-	X86_destroy,
-#else
-	NULL,
-#endif
-#ifdef CAPSTONE_HAS_POWERPC
-	PPC_destroy,
-#else
-	NULL,
-#endif
-#ifdef CAPSTONE_HAS_SPARC
-	Sparc_destroy,
-#else
-	NULL,
-#endif
-#ifdef CAPSTONE_HAS_SYSZ
-	SystemZ_destroy,
-#else
-	NULL,
-#endif
-#ifdef CAPSTONE_HAS_XCORE
-	XCore_destroy,
-#else
-	NULL,
-#endif
-};
-
+// bitmask for finding disallowed modes for an arch:
+// to be called in cs_open()/cs_option()
 cs_mode cs_arch_disallowed_mode_mask[MAX_ARCH] = {
 #ifdef CAPSTONE_HAS_ARM
 	~(CS_MODE_LITTLE_ENDIAN | CS_MODE_ARM | CS_MODE_V8 | CS_MODE_MCLASS | CS_MODE_THUMB | CS_MODE_BIG_ENDIAN),
@@ -235,7 +196,7 @@ cs_mode cs_arch_disallowed_mode_mask[MAX_ARCH] = {
 #endif
 };
 
-unsigned int all_arch =
+static unsigned int all_arch =
 #ifdef CAPSTONE_HAS_ARM
 	(1 << CS_ARCH_ARM)
 #else
diff --git a/cs_priv.h b/cs_priv.h
index 4bbccd039..556a9c958 100644
--- a/cs_priv.h
+++ b/cs_priv.h
@@ -60,21 +60,6 @@ struct cs_struct {
 // Returns a bool (0 or 1) whether big endian is enabled for a mode
 #define MODE_IS_BIG_ENDIAN(mode) (((mode) & CS_MODE_BIG_ENDIAN) != 0)
 
-// constructor initialization for all archs
-extern cs_err (*cs_arch_init[MAX_ARCH]) (cs_struct *);
-
-// support cs_option() for all archs
-extern cs_err (*cs_arch_option[MAX_ARCH]) (cs_struct*, cs_opt_type, size_t value);
-
-// deinitialized functions: to be called when cs_close() is called
-extern void (*cs_arch_destroy[MAX_ARCH]) (cs_struct*);
-
-// bitmask for finding disallowed modes for an arch:
-// to be called in cs_open()/cs_option()
-extern cs_mode cs_arch_disallowed_mode_mask[MAX_ARCH];
-
-extern unsigned int all_arch;
-
 extern cs_malloc_t cs_mem_malloc;
 extern cs_calloc_t cs_mem_calloc;
 extern cs_realloc_t cs_mem_realloc;