*** old/make/autoconf/flags-cflags.m4	Wed Feb 26 15:56:14 2020
--- new/make/autoconf/flags-cflags.m4	Wed Feb 26 15:56:13 2020

*** 707,717 ****
--- 707,720 ----
  
    # Extra flags needed when building optional static versions of certain
    # JDK libraries.
    STATIC_LIBS_CFLAGS="-DSTATIC_BUILD=1"
    if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
!     STATIC_LIBS_CFLAGS="$STATIC_LIBS_CFLAGS -ffunction-sections -fdata-sections"
!     STATIC_LIBS_CFLAGS="$STATIC_LIBS_CFLAGS -ffunction-sections -fdata-sections \
+       -DJNIEXPORT='__attribute__((visibility(\"hidden\")))'"
+   else
+     STATIC_LIBS_CFLAGS="$STATIC_LIBS_CFLAGS -DJNIEXPORT="
    fi
    if test "x$TOOLCHAIN_TYPE" = xgcc; then
      # Disable relax-relocation to enable compatibility with older linkers
      RELAX_RELOCATIONS_FLAG="-Xassembler -mrelax-relocations=no"
      FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${RELAX_RELOCATIONS_FLAG}],