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8374521: Support fine-grained native debug levels #29056

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shipilev wants to merge 5 commits into from
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8374521: Support fine-grained native debug levels #29056

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df1c997
Debug levels
shipilev Jan 5, 2026
ea09da2
Also enable in GHA
shipilev Jan 5, 2026
ebca865
Fallback when compiler does not support the value
shipilev Jan 6, 2026
4971365
--with-debug-info-level
shipilev Jan 6, 2026
6365bb9
Default to default, common the block, fail on incorrect debug level
shipilev Jan 6, 2026
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1 change: 1 addition & 0 deletions .github/workflows/build-alpine-linux.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -97,6 +97,7 @@ jobs:
--with-zlib=system
--with-jmod-compress=zip-1
--with-external-symbols-in-bundles=none
--with-debug-info-level=1
${{ inputs.extra-conf-options }} ${{ inputs.configure-arguments }} || (
echo "Dumping config.log:" &&
cat config.log &&
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1 change: 1 addition & 0 deletions .github/workflows/build-cross-compile.yml
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Expand Up @@ -180,6 +180,7 @@ jobs:
--with-sysroot=sysroot
--with-jmod-compress=zip-1
--with-external-symbols-in-bundles=none
--with-debug-info-level=1
CC=${{ matrix.gnu-arch }}-linux-gnu${{ matrix.gnu-abi}}-gcc-${{ inputs.gcc-major-version }}
CXX=${{ matrix.gnu-arch }}-linux-gnu${{ matrix.gnu-abi}}-g++-${{ inputs.gcc-major-version }}
${{ inputs.extra-conf-options }} ${{ inputs.configure-arguments }} || (
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1 change: 1 addition & 0 deletions .github/workflows/build-linux.yml
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Expand Up @@ -144,6 +144,7 @@ jobs:
--with-zlib=system
--with-jmod-compress=zip-1
--with-external-symbols-in-bundles=none
--with-debug-info-level=1
${{ inputs.extra-conf-options }} ${{ inputs.configure-arguments }} || (
echo "Dumping config.log:" &&
cat config.log &&
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1 change: 1 addition & 0 deletions .github/workflows/build-macos.yml
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Expand Up @@ -111,6 +111,7 @@ jobs:
--with-zlib=system
--with-jmod-compress=zip-1
--with-external-symbols-in-bundles=none
--with-debug-info-level=1
${{ inputs.extra-conf-options }} ${{ inputs.configure-arguments }} || (
echo "Dumping config.log:" &&
cat config.log &&
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27 changes: 23 additions & 4 deletions make/autoconf/flags-cflags.m4
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Expand Up @@ -69,6 +69,23 @@ AC_DEFUN([FLAGS_SETUP_DEBUG_SYMBOLS],
# Debug prefix mapping if supported by compiler
DEBUG_PREFIX_CFLAGS=

UTIL_ARG_WITH(NAME: debug-info-level, TYPE: string,
DEFAULT: "",
RESULT: DEBUG_INFO_LEVEL,
DESC: [Sets the debug info level, when debug info generation is enabled (GCC and Clang only)],
DEFAULT_DESC: [default])
AC_SUBST(DEBUG_INFO_LEVEL)

if test "x${TOOLCHAIN_TYPE}" = xgcc || \
test "x${TOOLCHAIN_TYPE}" = xclang; then
DEBUG_INFO_LEVEL_FLAGS="-g"
if test "x${DEBUG_INFO_LEVEL}" != "x"; then
DEBUG_INFO_LEVEL_FLAGS="-g${DEBUG_INFO_LEVEL}"
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${DEBUG_INFO_LEVEL_FLAGS}],
IF_FALSE: AC_MSG_ERROR("Debug info level ${DEBUG_INFO_LEVEL} is not supported"))
fi
fi

# Debug symbols
if test "x$TOOLCHAIN_TYPE" = xgcc; then
if test "x$ALLOW_ABSOLUTE_PATHS_IN_OUTPUT" = "xfalse"; then
Expand All @@ -93,8 +110,9 @@ AC_DEFUN([FLAGS_SETUP_DEBUG_SYMBOLS],
)
fi

CFLAGS_DEBUG_SYMBOLS="-g -gdwarf-4"
ASFLAGS_DEBUG_SYMBOLS="-g"
# Debug info level should follow the debug format to be effective.
CFLAGS_DEBUG_SYMBOLS="-gdwarf-4 ${DEBUG_INFO_LEVEL_FLAGS}"
ASFLAGS_DEBUG_SYMBOLS="${DEBUG_INFO_LEVEL_FLAGS}"
elif test "x$TOOLCHAIN_TYPE" = xclang; then
if test "x$ALLOW_ABSOLUTE_PATHS_IN_OUTPUT" = "xfalse"; then
# Check if compiler supports -fdebug-prefix-map. If so, use that to make
Expand All @@ -113,8 +131,9 @@ AC_DEFUN([FLAGS_SETUP_DEBUG_SYMBOLS],
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${GDWARF_FLAGS}],
IF_FALSE: [GDWARF_FLAGS=""])

CFLAGS_DEBUG_SYMBOLS="-g ${GDWARF_FLAGS}"
ASFLAGS_DEBUG_SYMBOLS="-g"
# Debug info level should follow the debug format to be effective.
CFLAGS_DEBUG_SYMBOLS="${GDWARF_FLAGS} ${DEBUG_INFO_LEVEL_FLAGS}"
ASFLAGS_DEBUG_SYMBOLS="${DEBUG_INFO_LEVEL_FLAGS}"
elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
CFLAGS_DEBUG_SYMBOLS="-Z7"
fi
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