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authorMichael Stahl <mstahl@redhat.com>2017-04-10 11:38:31 +0200
committerMichael Stahl <mstahl@redhat.com>2017-04-10 13:42:48 +0200
commitfae4b8d79819e205b1746014c770d5fb13d86e22 (patch)
tree402f10891c0d49d36fe6c49663edccd0c21ed19a
parent6bd33bd263c6666824d0d540395a4df4ae7d1d7b (diff)
gbuild: revert to -O0 instead of -Og for GCC --enable-debug/dbgutil builds
Unfortunately -Og doesn't work as well as advertised, variables are optimized away too often. See thread at https://lists.freedesktop.org/archives/libreoffice/2017-April/077479.html Change-Id: I5fc141ea9c7c6931aaf8220c7abf6b413326049e
-rw-r--r--config_host.mk.in1
-rw-r--r--configure.ac18
-rw-r--r--solenv/gbuild/platform/com_GCC_defs.mk4
3 files changed, 1 insertions, 22 deletions
diff --git a/config_host.mk.in b/config_host.mk.in
index 5796b56d184b..e60c80e326ed 100644
--- a/config_host.mk.in
+++ b/config_host.mk.in
@@ -242,7 +242,6 @@ 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_GNUMAKE_FILE_FUNC=@HAVE_GNUMAKE_FILE_FUNC@
export HAVE_LD_BSYMBOLIC_FUNCTIONS=@HAVE_LD_BSYMBOLIC_FUNCTIONS@
export HAVE_LD_HASH_STYLE=@HAVE_LD_HASH_STYLE@
diff --git a/configure.ac b/configure.ac
index af0ffd882039..8398aa334a0c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3750,7 +3750,6 @@ 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"$CLANGVER" -le 30100; then
@@ -3801,22 +3800,6 @@ if test "$GCC" = "yes"; then
AC_MSG_RESULT([no])
fi
- # clang as of version 4.0.0 (trunk 289424) doesn't do this very well (missing locals, bad param info in stack frame)
- if test "$COM_IS_CLANG" != "TRUE"; then
- 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 "$HAVE_GCC_OG" = "TRUE"; then
- AC_MSG_RESULT([yes])
- else
- AC_MSG_RESULT([no])
- fi
- fi
-
if test "$host_cpu" = "m68k"; then
AC_MSG_CHECKING([whether $CC supports -mlong-jump-table-offsets])
save_CFLAGS=$CFLAGS
@@ -3833,7 +3816,6 @@ 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
diff --git a/solenv/gbuild/platform/com_GCC_defs.mk b/solenv/gbuild/platform/com_GCC_defs.mk
index 25125334840c..6b697fc9461c 100644
--- a/solenv/gbuild/platform/com_GCC_defs.mk
+++ b/solenv/gbuild/platform/com_GCC_defs.mk
@@ -186,9 +186,7 @@ ifeq ($(HAVE_GCC_FNO_DEFAULT_INLINE),TRUE)
FNO_DEFAULT_INLINE=-fno-default-inline
endif
-# note: this overrides -O0 from the gb_COMPILERNOOPTFLAGS with -Og if
-# available, so that the former remains no-optimization for when that is needed
-gb_DEBUG_CFLAGS := $(if $(HAVE_GCC_OG),-Og) $(FINLINE_LIMIT0) $(FNO_INLINE)
+gb_DEBUG_CFLAGS := $(FINLINE_LIMIT0) $(FNO_INLINE)
gb_DEBUG_CXXFLAGS := $(FNO_DEFAULT_INLINE)