ci: Use documented `CCACHE_MAXSIZE` instead of `CCACHE_SIZE`

This change aims to:
1) Remove our own `CCACHE_SIZE` environment variable that violates
Ccache's `CCACHE_*` namespace.
2) Introduce the `CCACHE_MAXSIZE` environment variable that is
documented since v3.3, which makes its usage consistent with other ones,
such as `CCACHE_DIR` and `CCACHE_NOHASHDIR`.

8 files changed, 8 insertions, 8 deletions

diff --git a/ci/test/00_setup_env.sh b/ci/test/00_setup_env.sh
index 723f6ad37d..722a877890 100755
--- a/ci/test/00_setup_env.sh
+++ b/ci/test/00_setup_env.sh
@@ -54,7 +54,7 @@ export RUN_FUZZ_TESTS=${RUN_FUZZ_TESTS:-false}
 export BOOST_TEST_RANDOM=${BOOST_TEST_RANDOM:-1}
 # See man 7 debconf
 export DEBIAN_FRONTEND=noninteractive
-export CCACHE_SIZE=${CCACHE_SIZE:-100M}
+export CCACHE_MAXSIZE=${CCACHE_MAXSIZE:-100M}
 export CCACHE_TEMPDIR=${CCACHE_TEMPDIR:-/tmp/.ccache-temp}
 export CCACHE_COMPRESS=${CCACHE_COMPRESS:-1}
 # The cache dir.
diff --git a/ci/test/00_setup_env_mac_native_arm64.sh b/ci/test/00_setup_env_mac_native_arm64.sh
index 09c05f3bbd..eee72db435 100755
--- a/ci/test/00_setup_env_mac_native_arm64.sh
+++ b/ci/test/00_setup_env_mac_native_arm64.sh
@@ -13,6 +13,6 @@ export BITCOIN_CONFIG="--with-gui --with-miniupnpc --with-natpmp --enable-reduce
 export CI_OS_NAME="macos"
 export NO_DEPENDS=1
 export OSX_SDK=""
-export CCACHE_SIZE=300M
+export CCACHE_MAXSIZE=300M
 export RUN_FUZZ_TESTS=true
 export FUZZ_TESTS_CONFIG="--exclude banman"  # https://github.com/bitcoin/bitcoin/issues/27924
diff --git a/ci/test/00_setup_env_native_fuzz.sh b/ci/test/00_setup_env_native_fuzz.sh
index 481925dbc1..15785d1613 100755
--- a/ci/test/00_setup_env_native_fuzz.sh
+++ b/ci/test/00_setup_env_native_fuzz.sh
@@ -16,4 +16,4 @@ export RUN_FUZZ_TESTS=true
 export GOAL="install"
 export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer,address,undefined,float-divide-by-zero,integer \
 CC='clang-16 -ftrivial-auto-var-init=pattern' CXX='clang++-16 -ftrivial-auto-var-init=pattern'"
-export CCACHE_SIZE=200M
+export CCACHE_MAXSIZE=200M
diff --git a/ci/test/00_setup_env_native_fuzz_with_msan.sh b/ci/test/00_setup_env_native_fuzz_with_msan.sh
index 1f9adc0682..89006bf95e 100755
--- a/ci/test/00_setup_env_native_fuzz_with_msan.sh
+++ b/ci/test/00_setup_env_native_fuzz_with_msan.sh
@@ -22,4 +22,4 @@ export USE_MEMORY_SANITIZER="true"
 export RUN_UNIT_TESTS="false"
 export RUN_FUNCTIONAL_TESTS="false"
 export RUN_FUZZ_TESTS=true
-export CCACHE_SIZE=250M
+export CCACHE_MAXSIZE=250M
diff --git a/ci/test/00_setup_env_native_fuzz_with_valgrind.sh b/ci/test/00_setup_env_native_fuzz_with_valgrind.sh
index abc3854762..30f512c38a 100755
--- a/ci/test/00_setup_env_native_fuzz_with_valgrind.sh
+++ b/ci/test/00_setup_env_native_fuzz_with_valgrind.sh
@@ -17,4 +17,4 @@ export FUZZ_TESTS_CONFIG="--valgrind"
 export GOAL="install"
 # Temporarily pin dwarf 4, until using Valgrind 3.20 or later
 export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer CC='clang -gdwarf-4' CXX='clang++ -gdwarf-4'"
-export CCACHE_SIZE=200M
+export CCACHE_MAXSIZE=200M
diff --git a/ci/test/00_setup_env_native_msan.sh b/ci/test/00_setup_env_native_msan.sh
index 34d60c6c4c..a96ed30dd3 100755
--- a/ci/test/00_setup_env_native_msan.sh
+++ b/ci/test/00_setup_env_native_msan.sh
@@ -20,4 +20,4 @@ export GOAL="install"
 export BITCOIN_CONFIG="--with-sanitizers=memory --disable-hardening --with-asm=no CFLAGS='${MSAN_FLAGS}' CXXFLAGS='${MSAN_AND_LIBCXX_FLAGS}'"
 export USE_MEMORY_SANITIZER="true"
 export RUN_FUNCTIONAL_TESTS="false"
-export CCACHE_SIZE=250M
+export CCACHE_MAXSIZE=250M
diff --git a/ci/test/00_setup_env_native_tidy.sh b/ci/test/00_setup_env_native_tidy.sh
index 920180a274..c86722c551 100755
--- a/ci/test/00_setup_env_native_tidy.sh
+++ b/ci/test/00_setup_env_native_tidy.sh
@@ -16,4 +16,4 @@ export RUN_FUZZ_TESTS=false
 export RUN_TIDY=true
 export GOAL="install"
 export BITCOIN_CONFIG="CC=clang-16 CXX=clang++-16 --with-incompatible-bdb --disable-hardening CFLAGS='-O0 -g0' CXXFLAGS='-O0 -g0 -I/usr/lib/llvm-16/lib/clang/16/include'"
-export CCACHE_SIZE=200M
+export CCACHE_MAXSIZE=200M
diff --git a/ci/test/06_script_b.sh b/ci/test/06_script_b.sh
index b298d35170..6e921d3377 100755
--- a/ci/test/06_script_b.sh
+++ b/ci/test/06_script_b.sh
@@ -75,7 +75,7 @@ if [ -z "$NO_WERROR" ]; then
   BITCOIN_CONFIG_ALL="${BITCOIN_CONFIG_ALL} --enable-werror"
 fi
 
-ccache --zero-stats --max-size="${CCACHE_SIZE}"
+ccache --zero-stats
 PRINT_CCACHE_STATISTICS="ccache --version | head -n 1 && ccache --show-stats"
 
 if [ -n "$ANDROID_TOOLS_URL" ]; then