diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index d4cb011..5c74c71 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -128,6 +128,9 @@
     # Include more verbose output for failing tests run by CMake
     export CTEST_OUTPUT_ON_FAILURE=1
 
+    # CFLAGS and LDFLAGS for Asan builds that don't use CMake
+    ASAN_CFLAGS='-Werror -Wall -Wextra -fsanitize=address,undefined'
+
     # Gather the list of available components. These are the functions
     # defined in this script whose name starts with "component_".
     # Parse the script with sed, because in sh there is no way to list
@@ -826,7 +829,7 @@
     msg "build: malloc(0) returns NULL (ASan+UBSan build)"
     scripts/config.pl full
     scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C
-    make CC=gcc CFLAGS="'-DMBEDTLS_CONFIG_FILE=\"$PWD/tests/configs/config-wrapper-malloc-0-null.h\"' -O -Werror -Wall -Wextra -fsanitize=address,undefined" LDFLAGS='-fsanitize=address,undefined'
+    make CC=gcc CFLAGS="'-DMBEDTLS_CONFIG_FILE=\"$PWD/tests/configs/config-wrapper-malloc-0-null.h\"' $ASAN_CFLAGS -O" LDFLAGS="$ASAN_CFLAGS"
 
     msg "test: malloc(0) returns NULL (ASan+UBSan build)"
     make test
@@ -868,7 +871,7 @@
 component_test_se_default () {
     msg "build: default config + MBEDTLS_PSA_CRYPTO_SE_C"
     scripts/config.pl set MBEDTLS_PSA_CRYPTO_SE_C
-    make CC=clang CFLAGS='-Werror -Wall -Wextra -Wno-unused-function -Os -fsanitize=address' LDFLAGS='-fsanitize=address'
+    make CC=clang CFLAGS="$ASAN_CFLAGS -Os" LDFLAGS="$ASAN_CFLAGS"
 
     msg "test: default config + MBEDTLS_PSA_CRYPTO_SE_C"
     make test
@@ -877,7 +880,7 @@
 component_test_se_full () {
     msg "build: full config + MBEDTLS_PSA_CRYPTO_SE_C"
     scripts/config.pl set MBEDTLS_PSA_CRYPTO_SE_C
-    make CC=gcc CFLAGS='-Werror -Wall -Wextra -O2 -fsanitize=address' LDFLAGS='-fsanitize=address'
+    make CC=gcc CFLAGS="$ASAN_CFLAGS -O2" LDFLAGS="$ASAN_CFLAGS"
 
     msg "test: full config + MBEDTLS_PSA_CRYPTO_SE_C"
     make test
@@ -912,7 +915,7 @@
     # Build once with -O0, to compile out the i386 specific inline assembly
     msg "build: i386, make, gcc -O0 (ASan build)" # ~ 30s
     scripts/config.pl full
-    make CC=gcc CFLAGS='-O0 -Werror -Wall -Wextra -m32 -fsanitize=address' LDFLAGS='-m32 -fsanitize=address'
+    make CC=gcc CFLAGS="$ASAN_CFLAGS -m32 -O0" LDFLAGS="-m32 $ASAN_CFLAGS"
 
     msg "test: i386, make, gcc -O0 (ASan build)"
     make test
@@ -931,7 +934,7 @@
     scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE
     scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C
     scripts/config.pl unset MBEDTLS_MEMORY_DEBUG
-    make CC=gcc CFLAGS='-O1 -Werror -Wall -Wextra -m32 -fsanitize=address' LDFLAGS='-m32 -fsanitize=address'
+    make CC=gcc CFLAGS="$ASAN_CFLAGS -m32 -O1" LDFLAGS="-m32 $ASAN_CFLAGS"
 
     msg "test: i386, make, gcc -O1 (ASan build)"
     make test
@@ -944,7 +947,7 @@
     msg "build: i386, Everest ECDH context (ASan build)" # ~ 6 min
     scripts/config.pl unset MBEDTLS_ECDH_LEGACY_CONTEXT
     scripts/config.pl set MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
-    make CC=gcc CFLAGS='-O2 -Werror -Wall -Wextra -m32 -fsanitize=address'
+    make CC=gcc CFLAGS="$ASAN_CFLAGS -m32 -O2" LDFLAGS="-m32 $ASAN_CFLAGS"
 
     msg "test: i386, Everest ECDH context - main suites (inc. selftests) (ASan build)" # ~ 50s
     make test