Merge pull request #3524 from antonlacon/speed-flag

buildsystem: add "speed" flag for package building

config/functions

@@ -221,6 +221,18 @@ setup_toolchain() {
     TARGET_LDFLAGS+=" $LDFLAGS_OPTIM_GOLD"
   fi
 
+  # compiler optimization, descending priority: speed, size, default
+  if flag_enabled "speed" "no"; then
+    TARGET_CFLAGS+=" $CFLAGS_OPTIM_SPEED"
+    TARGET_CXXFLAGS+=" $CXXFLAGS_OPTIM_SPEED"
+  elif flag_enabled "size" "no"; then
+    TARGET_CFLAGS+=" $CFLAGS_OPTIM_SIZE"
+    TARGET_CXXFLAGS+=" $CXXFLAGS_OPTIM_SIZE"
+  else
+    TARGET_CFLAGS+=" $CXXFLAGS_OPTIM_DEFAULT"
+    TARGET_CXXFLAGS+=" $CXXFLAGS_OPTIM_DEFAULT"
+  fi
+
   # position-independent code
   if flag_enabled "pic" "no"; then
     TARGET_CFLAGS+=" $CFLAGS_OPTIM_PIC"

config/optimize

@@ -1,4 +1,3 @@
-GCC_OPTIM="-Os"
 # Linker hash-style is set to gnu via gcc default
 LD_OPTIM="-Wl,--as-needed"
 
@@ -15,7 +14,7 @@ fi
 NINJA_OPTS=""
 
 TARGET_CPPFLAGS=""
-TARGET_CFLAGS="$TARGET_CFLAGS -Wall -pipe $GCC_OPTIM $PROJECT_CFLAGS"
+TARGET_CFLAGS="$TARGET_CFLAGS -Wall -pipe $PROJECT_CFLAGS"
 TARGET_CXXFLAGS="$TARGET_CFLAGS"
 TARGET_LDFLAGS="$TARGET_LDFLAGS $LD_OPTIM"
 TARGET_LIBDIR="$SYSROOT_PREFIX/lib $SYSROOT_PREFIX/usr/lib"
@@ -43,6 +42,16 @@ LDFLAGS_OPTIM_LTO_COMMON="-fuse-linker-plugin"
 # gold flags
 LDFLAGS_OPTIM_GOLD="-fuse-ld=gold"
 
+# default compiler optimization
+CFLAGS_OPTIM_DEFAULT="-O2"
+CXXFLAGS_OPTIM_DEFAULT="$CFLAGS_OPTIM_DEFAULT"
+# speed flag
+CFLAGS_OPTIM_SPEED="-O3"
+CXXFLAGS_OPTIM_SPEED="$CFLAGS_OPTIM_SPEED"
+# size flag
+CFLAGS_OPTIM_SIZE="-Os"
+CXXFLAGS_OPTIM_SIZE="$CFLAGS_OPTIM_SIZE"
+
 # position-independent code
 CFLAGS_OPTIM_PIC="-fPIC -DPIC"
 CXXFLAGS_OPTIM_PIC="-fPIC -DPIC"

packages/debug/gdb/package.mk

@@ -10,7 +10,7 @@ PKG_SITE="http://www.gnu.org/software/gdb/"
 PKG_URL="http://ftpmirror.gnu.org/gdb/$PKG_NAME-$PKG_VERSION.tar.xz"
 PKG_DEPENDS_TARGET="toolchain zlib ncurses expat"
 PKG_LONGDESC="GNU Project debugger, allows you to see what is going on inside another program while it executes."
-# gdb could fail on runtime if build with LTO support
+PKG_BUILD_FLAGS="+size"
 
 PKG_CONFIGURE_OPTS_TARGET="bash_cv_have_mbstate_t=set \
                            --disable-shared \

packages/mediacenter/kodi/package.mk

@@ -7,6 +7,7 @@ PKG_LICENSE="GPL"
 PKG_SITE="http://www.kodi.tv"
 PKG_DEPENDS_TARGET="toolchain JsonSchemaBuilder:host TexturePacker:host Python2 zlib systemd lzo pcre swig:host libass curl fontconfig fribidi tinyxml libjpeg-turbo freetype libcdio taglib libxml2 libxslt rapidjson sqlite ffmpeg crossguid giflib libdvdnav libhdhomerun libfmt lirc libfstrcmp flatbuffers:host flatbuffers"
 PKG_LONGDESC="A free and open source cross-platform media player."
+PKG_BUILD_FLAGS="+speed"
 
 PKG_PATCH_DIRS="$KODI_VENDOR"