ci: move test environment variable declaration to .cirrus.yml

environment var moved:
    1. SECP256K1_TEST_ITERS (replaces TEST_ITERS)
    2. SECP256K1_BENCH_ITERS (replaces BENCH_ITERS)

.cirrus.yml

@@ -19,9 +19,9 @@ env:
   RECOVERY: no
   SCHNORRSIG: no
   ### test options
-  TEST_ITERS:
+  SECP256K1_TEST_ITERS:
   BENCH: yes
-  BENCH_ITERS: 2
+  SECP256K1_BENCH_ITERS: 2
   CTIMETEST: yes
 
 cat_logs_snippet: &CAT_LOGS
@@ -171,7 +171,7 @@ task:
     memory: 1G
   env:
     WRAPPER_CMD: qemu-s390x
-    TEST_ITERS: 16
+    SECP256K1_TEST_ITERS: 16
     HOST: s390x-linux-gnu
     WITH_VALGRIND: no
     ECDH: yes
@@ -194,7 +194,7 @@ task:
     memory: 1G
   env:
     WRAPPER_CMD: qemu-arm
-    TEST_ITERS: 16
+    SECP256K1_TEST_ITERS: 16
     HOST: arm-linux-gnueabihf
     WITH_VALGRIND: no
     ECDH: yes
@@ -218,7 +218,7 @@ task:
     memory: 1G
   env:
     WRAPPER_CMD: qemu-aarch64
-    TEST_ITERS: 16
+    SECP256K1_TEST_ITERS: 16
     HOST: aarch64-linux-gnu
     WITH_VALGRIND: no
     ECDH: yes
@@ -239,7 +239,7 @@ task:
     memory: 1G
   env:
     WRAPPER_CMD: qemu-ppc64le
-    TEST_ITERS: 16
+    SECP256K1_TEST_ITERS: 16
     HOST: powerpc64le-linux-gnu
     WITH_VALGRIND: no
     ECDH: yes
@@ -260,7 +260,7 @@ task:
     memory: 1G
   env:
     WRAPPER_CMD: wine64-stable
-    TEST_ITERS: 16
+    SECP256K1_TEST_ITERS: 16
     HOST: x86_64-w64-mingw32
     WITH_VALGRIND: no
     ECDH: yes
@@ -290,15 +290,15 @@ task:
       env:
         # The `--error-exitcode` is required to make the test fail if valgrind found errors, otherwise it'll return 0 (https://www.valgrind.org/docs/manual/manual-core.html)
         WRAPPER_CMD: "valgrind --error-exitcode=42"
-        TEST_ITERS: 16
+        SECP256K1_TEST_ITERS: 16
     - name: "UBSan, ASan, LSan"
       env:
         CFLAGS: "-fsanitize=undefined,address"
         CFLAGS_FOR_BUILD: "-fsanitize=undefined,address"
         UBSAN_OPTIONS: "print_stacktrace=1:halt_on_error=1"
         ASAN_OPTIONS: "strict_string_checks=1:detect_stack_use_after_return=1:detect_leaks=1"
         LSAN_OPTIONS: "use_unaligned=1"
-        TEST_ITERS: 32
+        SECP256K1_TEST_ITERS: 32
   # Try to cover many configurations with just a tiny matrix.
   matrix:
     - env:

ci/cirrus.sh

@@ -32,10 +32,6 @@ file .libs/* || true
 # This tells `make check` to wrap test invocations.
 export LOG_COMPILER="$WRAPPER_CMD"
 
-# This limits the iterations in the tests and benchmarks.
-export SECP256K1_TEST_ITERS="$TEST_ITERS"
-export SECP256K1_BENCH_ITERS="$BENCH_ITERS"
-
 make "$BUILD"
 
 if [ "$BENCH" = "yes" ]