8374521: Support fine-grained native debug levels

Reviewed-by: erikj, krk, clanger

Author: shipilev

.github/workflows/build-alpine-linux.yml

@@ -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 &&

.github/workflows/build-cross-compile.yml

@@ -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 }} || (

.github/workflows/build-linux.yml

@@ -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 &&

.github/workflows/build-macos.yml

@@ -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 &&

make/autoconf/flags-cflags.m4

@@ -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
@@ -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
@@ -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