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| author | Luke Deller <luke@deller.id.au> | 2015-01-14 23:48:36 +1100 |
|---|---|---|
| committer | Michael Stahl <mstahl@redhat.com> | 2016-12-01 16:48:52 +0000 |
| commit | d6a1ba29a512aec9b4aa3d0ab4bd6b92aea7fef4 (patch) | |
| tree | bb6aa0195834633dcf7745167f6bdaf38a3396f0 | |
| parent | c623a9f846c713b19a0d58337af4f4354aeffa6e (diff) | |
enable optimization (-Og) with --enable-debug
gcc-4.8 introduced a new optimization level -Og which enables
optimizations that do not interfere with debugging.
When configured with --enable-debug, use -Og rather than -O0
if available.
Change-Id: Iff3f98d736681ae34e49b96510228a14ce456b34
Reviewed-on: https://gerrit.libreoffice.org/31333
Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>
| -rw-r--r-- | config_host.mk.in | 1 | ||||
| -rw-r--r-- | configure.ac | 15 |
2 files changed, 16 insertions, 0 deletions
diff --git a/config_host.mk.in b/config_host.mk.in index 9bf9d69f3a4f..918174891e0b 100644 --- a/config_host.mk.in +++ b/config_host.mk.in @@ -244,6 +244,7 @@ export HAVE_GCC_FNO_ENFORCE_EH_SPECS=@HAVE_GCC_FNO_ENFORCE_EH_SPECS@ export HAVE_GCC_FNO_INLINE=@HAVE_GCC_FNO_INLINE@ export HAVE_GCC_FNO_SIZED_DEALLOCATION=@HAVE_GCC_FNO_SIZED_DEALLOCATION@ export HAVE_GCC_GGDB2=@HAVE_GCC_GGDB2@ +export HAVE_GCC_OG=@HAVE_GCC_OG@ export HAVE_GCC_PRAGMA_OPERATOR=@HAVE_GCC_PRAGMA_OPERATOR@ export HAVE_GNUMAKE_FILE_FUNC=@HAVE_GNUMAKE_FILE_FUNC@ export HAVE_LD_BSYMBOLIC_FUNCTIONS=@HAVE_LD_BSYMBOLIC_FUNCTIONS@ diff --git a/configure.ac b/configure.ac index 77fefaa1dc88..082b311f063b 100644 --- a/configure.ac +++ b/configure.ac @@ -3733,6 +3733,7 @@ fi HAVE_GCC_GGDB2= HAVE_GCC_FINLINE_LIMIT= HAVE_GCC_FNO_INLINE= +HAVE_GCC_OG= if test "$GCC" = "yes"; then AC_MSG_CHECKING([whether $CC supports -ggdb2]) if test -n "$CLANGVER" -a 0"$CLANGVER" -le 30100; then @@ -3782,10 +3783,24 @@ if test "$GCC" = "yes"; then else AC_MSG_RESULT([no]) fi + + AC_MSG_CHECKING([whether $CC supports -Og]) + # Note that clang-3.1 reports a real error for this option + # so we do not need a special case for clang<=3.1 as above. + save_CFLAGS=$CFLAGS + CFLAGS="$CFLAGS -Werror -Og" + AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ return 0; ]])],[ HAVE_GCC_OG=TRUE ],[]) + CFLAGS=$save_CFLAGS + if test "$HAVE_GCC_OG" = "TRUE"; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi fi AC_SUBST(HAVE_GCC_GGDB2) AC_SUBST(HAVE_GCC_FINLINE_LIMIT) AC_SUBST(HAVE_GCC_FNO_INLINE) +AC_SUBST(HAVE_GCC_OG) dnl =================================================================== dnl Test the gcc version |