diff --git a/library/aes.c b/library/aes.c
index e6b071a..b61d089 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -76,9 +76,7 @@
 /*
  * Forward S-box
  */
-#if !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
-    !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
-static const unsigned char FSb[256] =
+MBEDTLS_MAYBE_UNUSED static const unsigned char FSb[256] =
 {
     0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5,
     0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76,
@@ -113,8 +111,6 @@
     0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68,
     0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16
 };
-#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
-          !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
 
 /*
  * Forward tables
@@ -186,36 +182,28 @@
     V(C3, 41, 41, 82), V(B0, 99, 99, 29), V(77, 2D, 2D, 5A), V(11, 0F, 0F, 1E), \
     V(CB, B0, B0, 7B), V(FC, 54, 54, A8), V(D6, BB, BB, 6D), V(3A, 16, 16, 2C)
 
-#if !defined(MBEDTLS_AES_ENCRYPT_ALT)
 #define V(a, b, c, d) 0x##a##b##c##d
-static const uint32_t FT0[256] = { FT };
+MBEDTLS_MAYBE_UNUSED static const uint32_t FT0[256] = { FT };
 #undef V
 
-#if !defined(MBEDTLS_AES_FEWER_TABLES)
-
 #define V(a, b, c, d) 0x##b##c##d##a
-static const uint32_t FT1[256] = { FT };
+MBEDTLS_MAYBE_UNUSED static const uint32_t FT1[256] = { FT };
 #undef V
 
 #define V(a, b, c, d) 0x##c##d##a##b
-static const uint32_t FT2[256] = { FT };
+MBEDTLS_MAYBE_UNUSED static const uint32_t FT2[256] = { FT };
 #undef V
 
 #define V(a, b, c, d) 0x##d##a##b##c
-static const uint32_t FT3[256] = { FT };
+MBEDTLS_MAYBE_UNUSED static const uint32_t FT3[256] = { FT };
 #undef V
 
-#endif /* !MBEDTLS_AES_FEWER_TABLES */
-
-#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) */
-
 #undef FT
 
-#if !defined(MBEDTLS_AES_DECRYPT_ALT)
 /*
  * Reverse S-box
  */
-static const unsigned char RSb[256] =
+MBEDTLS_MAYBE_UNUSED static const unsigned char RSb[256] =
 {
     0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38,
     0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB,
@@ -250,7 +238,6 @@
     0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26,
     0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D
 };
-#endif /* defined(MBEDTLS_AES_DECRYPT_ALT)) */
 
 /*
  * Reverse tables
@@ -322,84 +309,60 @@
     V(71, 01, A8, 39), V(DE, B3, 0C, 08), V(9C, E4, B4, D8), V(90, C1, 56, 64), \
     V(61, 84, CB, 7B), V(70, B6, 32, D5), V(74, 5C, 6C, 48), V(42, 57, B8, D0)
 
-#if !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
 
 #define V(a, b, c, d) 0x##a##b##c##d
-static const uint32_t RT0[256] = { RT };
+MBEDTLS_MAYBE_UNUSED static const uint32_t RT0[256] = { RT };
 #undef V
 
-#if !defined(MBEDTLS_AES_FEWER_TABLES)
-
 #define V(a, b, c, d) 0x##b##c##d##a
-static const uint32_t RT1[256] = { RT };
+MBEDTLS_MAYBE_UNUSED static const uint32_t RT1[256] = { RT };
 #undef V
 
 #define V(a, b, c, d) 0x##c##d##a##b
-static const uint32_t RT2[256] = { RT };
+MBEDTLS_MAYBE_UNUSED static const uint32_t RT2[256] = { RT };
 #undef V
 
 #define V(a, b, c, d) 0x##d##a##b##c
-static const uint32_t RT3[256] = { RT };
+MBEDTLS_MAYBE_UNUSED static const uint32_t RT3[256] = { RT };
 #undef V
 
-#endif /* !MBEDTLS_AES_FEWER_TABLES */
-
-#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
-
 #undef RT
 
-#if !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
 /*
  * Round constants
  */
-static const uint32_t round_constants[10] =
+MBEDTLS_MAYBE_UNUSED static const uint32_t round_constants[10] =
 {
     0x00000001, 0x00000002, 0x00000004, 0x00000008,
     0x00000010, 0x00000020, 0x00000040, 0x00000080,
     0x0000001B, 0x00000036
 };
-#endif /* !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
 
 #else /* MBEDTLS_AES_ROM_TABLES */
 
 /*
  * Forward S-box & tables
  */
-#if !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
-    !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
-static unsigned char FSb[256];
-#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
-          !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
-#if !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
-static uint32_t FT0[256];
-#if !defined(MBEDTLS_AES_FEWER_TABLES)
-static uint32_t FT1[256];
-static uint32_t FT2[256];
-static uint32_t FT3[256];
-#endif /* !MBEDTLS_AES_FEWER_TABLES */
-#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
+MBEDTLS_MAYBE_UNUSED static unsigned char FSb[256];
+MBEDTLS_MAYBE_UNUSED static uint32_t FT0[256];
+MBEDTLS_MAYBE_UNUSED static uint32_t FT1[256];
+MBEDTLS_MAYBE_UNUSED static uint32_t FT2[256];
+MBEDTLS_MAYBE_UNUSED static uint32_t FT3[256];
 
 /*
  * Reverse S-box & tables
  */
-#if !(defined(MBEDTLS_AES_SETKEY_ENC_ALT) && defined(MBEDTLS_AES_DECRYPT_ALT))
-static unsigned char RSb[256];
-#endif /* !(defined(MBEDTLS_AES_SETKEY_ENC_ALT) && defined(MBEDTLS_AES_DECRYPT_ALT)) */
+MBEDTLS_MAYBE_UNUSED static unsigned char RSb[256];
 
-#if !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
-static uint32_t RT0[256];
-#if !defined(MBEDTLS_AES_FEWER_TABLES)
-static uint32_t RT1[256];
-static uint32_t RT2[256];
-static uint32_t RT3[256];
-#endif /* !MBEDTLS_AES_FEWER_TABLES */
-#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
+MBEDTLS_MAYBE_UNUSED static uint32_t RT0[256];
+MBEDTLS_MAYBE_UNUSED static uint32_t RT1[256];
+MBEDTLS_MAYBE_UNUSED static uint32_t RT2[256];
+MBEDTLS_MAYBE_UNUSED static uint32_t RT3[256];
 
-#if !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
 /*
  * Round constants
  */
-static uint32_t round_constants[10];
+MBEDTLS_MAYBE_UNUSED static uint32_t round_constants[10];
 
 /*
  * Tables generation code
@@ -408,9 +371,9 @@
 #define XTIME(x) (((x) << 1) ^ (((x) & 0x80) ? 0x1B : 0x00))
 #define MUL(x, y) (((x) && (y)) ? pow[(log[(x)]+log[(y)]) % 255] : 0)
 
-static int aes_init_done = 0;
+MBEDTLS_MAYBE_UNUSED static int aes_init_done = 0;
 
-static void aes_gen_tables(void)
+MBEDTLS_MAYBE_UNUSED static void aes_gen_tables(void)
 {
     int i;
     uint8_t x, y, z;
@@ -474,7 +437,8 @@
 
         x = RSb[i];
 
-#if !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
+#if !defined(MBEDTLS_AES_DECRYPT_ALT) || \
+        (!defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY))
         RT0[i] = ((uint32_t) MUL(0x0E, x)) ^
                  ((uint32_t) MUL(0x09, x) <<  8) ^
                  ((uint32_t) MUL(0x0D, x) << 16) ^
@@ -485,12 +449,11 @@
         RT2[i] = ROTL8(RT1[i]);
         RT3[i] = ROTL8(RT2[i]);
 #endif /* !MBEDTLS_AES_FEWER_TABLES */
-#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
+#endif \
+        /* !defined(MBEDTLS_AES_DECRYPT_ALT) || (!defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)) */
     }
 }
 
-#endif /* !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
-
 #undef ROTL8
 
 #endif /* MBEDTLS_AES_ROM_TABLES */
@@ -568,9 +531,7 @@
 #define MAY_NEED_TO_ALIGN
 #endif
 
-#if defined(MAY_NEED_TO_ALIGN) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) || \
-    !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
-static unsigned mbedtls_aes_rk_offset(uint32_t *buf)
+MBEDTLS_MAYBE_UNUSED static unsigned mbedtls_aes_rk_offset(uint32_t *buf)
 {
 #if defined(MAY_NEED_TO_ALIGN)
     int align_16_bytes = 0;
@@ -606,8 +567,6 @@
 
     return 0;
 }
-#endif /* defined(MAY_NEED_TO_ALIGN) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) || \
-          !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
 
 /*
  * AES key schedule (encryption)
@@ -1040,7 +999,6 @@
 }
 #endif /* !MBEDTLS_AES_DECRYPT_ALT */
 
-#if defined(MAY_NEED_TO_ALIGN)
 /* VIA Padlock and our intrinsics-based implementation of AESNI require
  * the round keys to be aligned on a 16-byte boundary. We take care of this
  * before creating them, but the AES context may have moved (this can happen
@@ -1048,7 +1006,7 @@
  * calls it might have a different alignment with respect to 16-byte memory.
  * So we may need to realign.
  */
-static void aes_maybe_realign(mbedtls_aes_context *ctx)
+MBEDTLS_MAYBE_UNUSED static void aes_maybe_realign(mbedtls_aes_context *ctx)
 {
     unsigned new_offset = mbedtls_aes_rk_offset(ctx->buf);
     if (new_offset != ctx->rk_offset) {
@@ -1058,7 +1016,6 @@
         ctx->rk_offset = new_offset;
     }
 }
-#endif
 
 /*
  * AES-ECB block encryption/decryption
diff --git a/library/common.h b/library/common.h
index 3c472c6..de26d45 100644
--- a/library/common.h
+++ b/library/common.h
@@ -334,4 +334,25 @@
 #define MBEDTLS_OPTIMIZE_FOR_PERFORMANCE
 #endif
 
+/* Suppress compiler warnings for unused functions and variables. */
+#if !defined(MBEDTLS_MAYBE_UNUSED) && (defined(__GNUC__) || defined(__clang__))
+#define MBEDTLS_MAYBE_UNUSED __attribute__((unused))
+#endif
+#if !defined(MBEDTLS_MAYBE_UNUSED) && defined(__IAR_SYSTEMS_ICC__) && defined(__VER__)
+#if (__VER__ >= 8010000) // IAR 8.1 or later
+#define MBEDTLS_MAYBE_UNUSED __attribute__((unused))
+#endif
+#endif
+#if !defined(MBEDTLS_MAYBE_UNUSED) && defined(_MSC_VER)
+#define MBEDTLS_MAYBE_UNUSED __pragma(warning(suppress:4189))
+#endif
+#if !defined(MBEDTLS_MAYBE_UNUSED) && defined(__has_attribute)
+#if __has_attribute(unused)
+#define MBEDTLS_MAYBE_UNUSED __attribute__((unused))
+#endif
+#endif
+#if !defined(MBEDTLS_MAYBE_UNUSED)
+#define MBEDTLS_MAYBE_UNUSED
+#endif
+
 #endif /* MBEDTLS_LIBRARY_COMMON_H */
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 19f927d..fec46cc 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -3919,45 +3919,101 @@
     make lib CC="gcc" CFLAGS="-Os -std=c99 -Werror -Wall -Wextra -Wwrite-strings -Wpointer-arith -Wshadow -Wvla -Wformat=2 -Wno-format-nonliteral -Wshadow -Wformat-signedness -Wlogical-op -I../tests/include/spe"
 }
 
-component_build_aes_variations() { # ~45s
+# Test that the given .o file builds with all (valid) combinations of the given options.
+#
+# Syntax: build_test_config_combos FILE VALIDATOR_FUNCTION OPT1 OPT2 ...
+#
+# The validator function is the name of a function to validate the combination of options.
+# It may be "" if all combinations are valid.
+# It receives a string containing a combination of options, as passed to the compiler,
+# e.g. "-DOPT1 -DOPT2 ...". It must echo something iff the combination is invalid.
+build_test_config_combos() {
+    file=$1
+    shift
+    validate_options=$1
+    shift
+    options=("$@")
+
+    # clear all of the options so that they can be overridden on the clang commandline
+    for opt in "${options[@]}"; do
+        ./scripts/config.py unset ${opt}
+    done
+
+    # enter the directory containing the target file & strip the dir from the filename
+    cd $(dirname ${file})
+    file=$(basename ${file})
+
+    # The most common issue is unused variables/functions, so ensure -Wunused is set.
+    warning_flags="-Werror -Wall -Wextra -Wwrite-strings -Wpointer-arith -Wimplicit-fallthrough -Wshadow -Wvla -Wformat=2 -Wno-format-nonliteral -Wshadow -Wasm-operand-widths -Wunused"
+
+    # Extract the command generated by the Makefile to build the target file.
+    # This ensures that we have any include paths, macro definitions, etc
+    # that may be applied by make.
+    # Add -fsyntax-only as we only want a syntax check and don't need to generate a file.
+    compile_cmd=$(make -B -n ${file} CC=clang CFLAGS="${warning_flags} -fsyntax-only" | egrep "^clang")
+
+    makefile=$(mktemp)
+    deps=""
+
+    len=${#options[@]}
+
+    for ((i = 0; i < $((2**${len})); i++)); do
+        # generate each of 2^n combinations of options
+        # each bit of $i is used to determine if options[i] will be set or not
+        target="t"
+        clang_args=""
+        for ((j = 0; j < ${len}; j++)); do
+            if (((i >> j) & 1)); then
+                opt=-D${options[$j]}
+                clang_args="${clang_args} ${opt}"
+                target="${target}${opt}"
+            fi
+        done
+
+        # if combination is not known to be invalid, add it to the makefile
+        if [[ -z $validate_options ]] || [[ $($validate_options "${clang_args}") == "" ]] ; then
+            cmd="${compile_cmd} ${clang_args}"
+            echo "${target}:" >> ${makefile}
+            echo -e "\t$cmd" >> ${makefile}
+
+            deps="${deps} ${target}"
+        fi
+    done
+
+    echo "all: ${deps}" >> ${makefile}
+
+    # execute all of the commands via Make (probably in parallel)
+    make -s -f ${makefile} all
+
+    # clean up the temporary makefile
+    rm ${makefile}
+}
+
+validate_aes_config_variations() {
+    if [[ "$1" == *"MBEDTLS_AES_USE_HARDWARE_ONLY"* ]]; then
+        if [[ "$1" == *"MBEDTLS_PADLOCK_C"* ]]; then
+            echo INVALID
+        fi
+        if [[ !(("$HOSTTYPE" == "aarch64" && "$1" != *"MBEDTLS_AESCE_C"*) || \
+                ("$HOSTTYPE" == "x86_64"  && "$1" != *"MBEDTLS_AESNI_C"*)) ]]; then
+            echo INVALID
+        fi
+    fi
+}
+
+component_build_aes_variations() {
+    # 18s - around 90ms per clang invocation on M1 Pro
+    #
     # aes.o has many #if defined(...) guards that intersect in complex ways.
-    # Test that all the combinations build cleanly. The most common issue is
-    # unused variables/functions, so ensure -Wunused is set.
+    # Test that all the combinations build cleanly.
 
     msg "build: aes.o for all combinations of relevant config options"
 
-    for a in set unset; do
-    for b in set unset; do
-    for c in set unset; do
-    for d in set unset; do
-    for e in set unset; do
-    for f in set unset; do
-    for g in set unset; do
-        echo ./scripts/config.py $a MBEDTLS_AES_SETKEY_ENC_ALT
-        echo ./scripts/config.py $b MBEDTLS_AES_DECRYPT_ALT
-        echo ./scripts/config.py $c MBEDTLS_AES_ROM_TABLES
-        echo ./scripts/config.py $d MBEDTLS_AES_ENCRYPT_ALT
-        echo ./scripts/config.py $e MBEDTLS_AES_SETKEY_DEC_ALT
-        echo ./scripts/config.py $f MBEDTLS_AES_FEWER_TABLES
-        echo ./scripts/config.py $g MBEDTLS_PADLOCK_C
-
-        ./scripts/config.py $a MBEDTLS_AES_SETKEY_ENC_ALT
-        ./scripts/config.py $b MBEDTLS_AES_DECRYPT_ALT
-        ./scripts/config.py $c MBEDTLS_AES_ROM_TABLES
-        ./scripts/config.py $d MBEDTLS_AES_ENCRYPT_ALT
-        ./scripts/config.py $e MBEDTLS_AES_SETKEY_DEC_ALT
-        ./scripts/config.py $f MBEDTLS_AES_FEWER_TABLES
-        ./scripts/config.py $g MBEDTLS_PADLOCK_C
-
-        rm -f library/aes.o
-        make -C library aes.o CC="clang" CFLAGS="-O0 -std=c99 -Werror -Wall -Wextra -Wwrite-strings -Wpointer-arith -Wimplicit-fallthrough -Wshadow -Wvla -Wformat=2 -Wno-format-nonliteral -Wshadow -Wasm-operand-widths -Wunused"
-    done
-    done
-    done
-    done
-    done
-    done
-    done
+    build_test_config_combos library/aes.o validate_aes_config_variations \
+        "MBEDTLS_AES_SETKEY_ENC_ALT" "MBEDTLS_AES_DECRYPT_ALT" \
+        "MBEDTLS_AES_ROM_TABLES" "MBEDTLS_AES_ENCRYPT_ALT" "MBEDTLS_AES_SETKEY_DEC_ALT" \
+        "MBEDTLS_AES_FEWER_TABLES" "MBEDTLS_PADLOCK_C" "MBEDTLS_AES_USE_HARDWARE_ONLY" \
+        "MBEDTLS_AESNI_C" "MBEDTLS_AESCE_C" "MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH"
 }
 
 component_test_no_platform () {