diff --git a/make/autoconf/flags-cflags.m4 b/make/autoconf/flags-cflags.m4
index 2d39d84f52e..ab9cd8be19b 100644
--- a/make/autoconf/flags-cflags.m4
+++ b/make/autoconf/flags-cflags.m4
@@ -578,6 +578,11 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
       TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX
     fi
 
+    if test "x$ENABLE_LINKTIME_GC" = xtrue; then
+      TOOLCHAIN_CFLAGS_JDK="$TOOLCHAIN_CFLAGS_JDK -ffunction-sections -fdata-sections"
+      TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -ffunction-sections -fdata-sections"
+    fi
+
     if test "x$OPENJDK_TARGET_OS" = xaix; then
       TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -ffunction-sections -ftls-model -fno-math-errno"
       TOOLCHAIN_CFLAGS_JDK="-ffunction-sections -fsigned-char"
diff --git a/make/autoconf/flags-ldflags.m4 b/make/autoconf/flags-ldflags.m4
index 466ff1beaf4..7782735be25 100644
--- a/make/autoconf/flags-ldflags.m4
+++ b/make/autoconf/flags-ldflags.m4
@@ -80,6 +80,10 @@ AC_DEFUN([FLAGS_SETUP_LDFLAGS_HELPER],
       if test "x$CXX_IS_USER_SUPPLIED" = xfalse && test "x$CC_IS_USER_SUPPLIED" = xfalse; then
         UTIL_REQUIRE_TOOLCHAIN_PROGS(LLD, lld)
       fi
+
+      if test "x$ENABLE_LINKTIME_GC" = xtrue; then
+        BASIC_LDFLAGS_JDK_ONLY="$BASIC_LDFLAGS_JDK_ONLY -Wl,--gc-sections"
+      fi
     fi
     if test "x$OPENJDK_TARGET_OS" = xaix; then
       BASIC_LDFLAGS="-Wl,-b64 -Wl,-brtl -Wl,-bnorwexec -Wl,-blibpath:/usr/lib:lib -Wl,-bnoexpall \