efl: add compiler flags

 * -fvisibility=hidden will hide symbols not marked with EAPI in the
    final binary (so/executable).

 * -ffunction-sections and -fdata-sections will split those into
    independent elf sections, then we can -Wl,--gc-sections for those
    that are unused. During development --Wl,--print-gc-sections will
    warn us of functions that are left unused and were collected.

SVN revision: 81906

diff --git a/configure.ac b/configure.ac
index b80a6bf..61a2fbb 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -424,11 +424,12 @@ AC_CHECK_TYPES([siginfo_t], [], [],
 
 AC_C_BIGENDIAN
 AC_C_INLINE
-EFL_CHECK_COMPILER_FLAGS([EFL], [-Wall -Wextra -Wpointer-arith -Wno-missing-field-initializers])
-EFL_CHECK_LINKER_FLAGS([EFL], [-fno-strict-aliasing -Wl,--as-needed])
+EFL_CHECK_COMPILER_FLAGS([EFL], [-Wall -Wextra -Wpointer-arith -Wno-missing-field-initializers -fvisibility=hidden -fdata-sections -ffunction-sections])
+EFL_CHECK_LINKER_FLAGS([EFL], [-fvisibility=hidden -fdata-sections -ffunction-sections -Wl,--gc-sections -fno-strict-aliasing -Wl,--as-needed])
 case "${build_profile}" in
    dev)
      EFL_CHECK_COMPILER_FLAGS([EFL], [-Wshadow])
+     EFL_CHECK_LINKER_FLAGS([EFL], [-Wl,--print-gc-sections])
      ;;
 
    debug)