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32 bit cross compiling support on Linux 

Add the `m32` parameter to ./installdeps to fetch 32 bit multilib
dependencies on Fedora, Arch and Solus linuxes and add a cmake toolchain
file to build with them.

For MSYS2 support both an `m32` and an `m64` to choose deps for 32 bit
or 64 bit mingw targets.

Adjust build instructions from ./installdeps to support both usages.

Other changes:

- use --nogpgcheck --best --allowerasing for dnf invocations for Fedora,
  the --nogpgcheck is necessary when Rawhide is confused about which
  keys it has, and the latter two are needed for upgrades that remove
  unneeded deps etc

- when finding GTK2, first try using pkg-config, and only fall back to
  the cmake script when that fails, pkg-config works better for cross
  builds

- add cairo to dep lists in ./installdeps for the time being

- for arch, list individual packages from base-devel instead of
  base-devel that do not require gcc-libs because of potential conflicts
  between gcc and gcc-multilib
This commit is contained in:
Rafael Kitover 2017-03-23 14:09:17 -07:00
parent 352527254b
commit 41ead88dcb
4 changed files with 301 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
CMakeScripts/Toolchain-cross-m32.cmake Normal file
View File

@ -0,0 +1,51 @@
SET(CMAKE_C_FLAGS "-m32" CACHE STRING "C compiler flags" FORCE)
SET(CMAKE_CXX_FLAGS "-m32" CACHE STRING "C++ compiler flags" FORCE)
SET(LIB32 /usr/lib) # Fedora
IF(EXISTS /usr/lib32)
SET(LIB32 /usr/lib32) # Arch, Solus
ENDIF()
SET(CMAKE_SYSTEM_LIBRARY_PATH ${LIB32} CACHE STRING "system library search path" FORCE)
SET(CMAKE_LIBRARY_PATH ${LIB32} CACHE STRING "library search path" FORCE)
# this is probably unlikely to be needed, but just in case
SET(CMAKE_EXE_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "executable linker flags" FORCE)
SET(CMAKE_SHARED_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "shared library linker flags" FORCE)
SET(CMAKE_MODULE_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "module linker flags" FORCE)
# find Wx config script on Fedora for the highest version of 32 bit Wx installed
IF(EXISTS ${LIB32}/wx/config)
FILE(GLOB WX_INSTALLS ${LIB32}/wx/config/*)
SET(MAX_WX_VERSION 0.0)
FOREACH(WX_INSTALL ${WX_INSTALLS})
STRING(REGEX MATCH "[0-9]+(\\.[0-9]+)+\$" WX_VERSION ${WX_INSTALL})
IF(WX_VERSION VERSION_GREATER MAX_WX_VERSION)
SET(MAX_WX_VERSION ${WX_VERSION})
ENDIF()
ENDFOREACH()
FILE(GLOB WX_INSTALL_CONFIGS "${LIB32}/wx/config/*${MAX_WX_VERSION}")
LIST(GET WX_INSTALL_CONFIGS 0 WX_INSTALL_CONFIG)
SET(WX_CONFIG_TRANSFORM_SCRIPT_LINES
""
)
FILE(WRITE ${CMAKE_BINARY_DIR}/wx-config-wrapper
"#!/bin/sh
${WX_INSTALL_CONFIG} \"\$@\" | sed 's!/emul32/!/usr/!g'
")
EXECUTE_PROCESS(COMMAND chmod +x ${CMAKE_BINARY_DIR}/wx-config-wrapper)
SET(wxWidgets_CONFIG_EXECUTABLE ${CMAKE_BINARY_DIR}/wx-config-wrapper)
ENDIF()
# on Fedora and Arch and similar, point pkgconfig at 32 bit .pc files. We have
# to include the regular system .pc files as well (at the end), because some
# are not always present in the 32 bit directory
IF(EXISTS ${LIB32}/pkgconfig)
SET(ENV{PKG_CONFIG_LIBDIR} ${LIB32}/pkgconfig:/usr/share/pkgconfig:/usr/lib/pkgconfig:/usr/lib64/pkgconfig)
ENDIF()

6
README.md
View File

@ -62,6 +62,12 @@ to (usually 2 or 3).
Support for more OSes/distributions for `./installdeps` is planned.
## Cross compiling for 32 bit on a 64 bit host
`./installdeps m32` will set things up to build a 32 bit binary.
This is supported on Fedora, Arch, Solus and MSYS2.
## Cross Compiling for Win32
`./installdeps` takes one optional parameter for cross-compiling target, which

283
installdeps
View File

@ -33,10 +33,7 @@ main() {
Darwin)
osx_installdeps
;;
MSYS*)
error 'You must run this program from a MINGW 32 bit or 64 bit shell, not the MSYS shell'
;;
MINGW*)
MINGW*|MSYS*)
msys2_installdeps
;;
*)
@ -68,18 +65,23 @@ host OS.
This program may require sudo.
A cross-compile target may be specified as the only parameter, of either
win32, MinGW-w64-i686 or MinGW-w64-x86_64.
win32 is an alias for MinGW-w64-i686.
This is only supported on Debian/Ubuntu, Arch Linux and MSYS2.
m32 which targets the host in 32 bit mode (e.g. x86 on an amd64
host) or win32, MinGW-w64-i686 or
MinGW-w64-x86_64. win32 is an alias for
MinGW-w64-i686 to target Windows via MinGW. Cross compiling for
Windows is only supported on Debian/Ubuntu, Fedora, Arch Linux and MSYS2.
On MSYS2 dependencies are installed for 32 or 64 bit native Windows targets
based on which shell you started (the value of $MSYSTEM) unless you specify one
or the other. MSYS2 POSIX layer builds are not supported.
or the other. You can specify a cross target of m32 or
m64 as aliases for the 32 bit or 64 bit targets respectively.
MSYS2 POSIX layer builds are not supported.
-h, --help, --usage Show this help screen and exit.
Examples:
./installdeps # install dependencies for a host build
./installdeps m32 # make a 32 bit binary for the host OS
./installdeps win32 # cross-compile for 32 bit windows (Debian/Ubuntu, Arch Linux or MSYS2)
./installdeps MinGW-w64-i686 # likewise
./installdeps MinGW-w64-x86_64 # cross-compile for 64 bit windows (Debian/Ubuntu, Arch Linux or MSYS2)
@ -103,7 +105,7 @@ info_msg() {
}
installing() {
echo 'Installing deps....'
echo 'Installing deps...'
echo
}
@ -153,6 +155,8 @@ linux_installdeps() {
}
check_cross() {
target=$(echo "$target" | tr 'A-Z' 'a-z')
if [ -z "$target" ]; then
if [ -n "$msys2" ]; then
case "$MSYSTEM" in
@ -162,6 +166,9 @@ check_cross() {
MINGW64)
target='mingw-w64-x86_64'
;;
MSYS)
error 'host builds in MSYS mode are not supported, supply a target or start a MINGW shell'
;;
*)
error 'unknown value for $MSYSTEM: '"$MSYSTEM"' '
;;
@ -171,12 +178,12 @@ check_cross() {
fi
fi
case "$target" in
win32|mingw*)
if [ -z "$arch_linux" -a -z "$msys2" -a -z "$debian" -a -z "$fedora" ]; then
error 'cross compiling targets are only supported on Debian/Ubuntu, Fedora, Arch Linux and MSYS2 at the moment'
error 'win32 cross compiling targets are only supported on Debian/Ubuntu, Fedora, Arch and MSYS2 at the moment'
fi
target=$(echo "$target" | tr 'A-Z' 'a-z')
case "$target" in
win32)
target='mingw-w64-i686'
@ -186,12 +193,34 @@ check_cross() {
mingw-w64-x86_64)
;;
*)
error "target must be one of 'MinGW-w64-i686' or 'MinGW-w64-x86_64'"
error "target must be one of 'm32', 'win32', 'MinGW-w64-i686' or 'MinGW-w64-x86_64'"
;;
esac
# all good, get the necessary win32 headers
# get the necessary win32 headers
check git submodule update --init --recursive
;;
m32)
if [ -z "$msys2" -a -z "$fedora" -a -z "$arch_linux" -a -z "$solus" ]; then
error '32 bit builds are only supported on Fedora, Arch, Solus and MSYS2 at the moment'
fi
if [ -n "$msys2" ]; then
target='mingw-w64-i686'
else
cmake_flags="$cmake_flags -DCMAKE_TOOLCHAIN_FILE=../CMakeScripts/Toolchain-cross-m32.cmake"
fi
;;
m64)
if [ -z "$msys2" ]; then
error '64 bit cross target only supported on MSYS2 at the moment'
fi
target='mingw-w64-x86_64'
;;
*)
error "unknown cross target: '$target' "
;;
esac
}
debian_installdeps() {
@ -246,50 +275,73 @@ fedora_installdeps() {
warning=
# using --nogpgcheck with dnf because keys can be a problem on rawhide
# make sure rpmfusion is installed for ffmpeg
check sudo su -c 'dnf -y install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm'
check sudo su -c 'dnf -y --nogpgcheck install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm'
# non-multiarch packages first
check sudo dnf -y install gcc gcc-c++ make cmake git nasm redhat-rpm-config pkgconfig
check sudo dnf -y --nogpgcheck --best --allowerasing install gcc gcc-c++ make cmake git nasm redhat-rpm-config pkgconfig
# older fedora has separate 32 bit and 64 bit pkgconfig packages
# try to install both, ignoring errors
# try to install multiarch libgcc, glibc-devel and pkgconfig if available
if [ -n "$amd64" ]; then
sudo dnf -y install pkgconfig.x86_64 >/dev/null 2>&1
sudo dnf -y install pkgconfig.i686 >/dev/null 2>&1
for pkg in pkgconfig libgcc glibc-devel; do
if [ "$target" = m32 ]; then
sudo dnf -y --nogpgcheck --best --allowerasing install "$pkg".i686
else
sudo dnf -y --nogpgcheck --best --allowerasing install "$pkg".x86_64
fi
done
fi
set --
if [ -z "$target" ]; then
if [ -z "$target" -o "$target" = m32 ]; then
# try to install both 64 bit and 32 bit versions on 64 bit hosts (see below)
if [ -n "$amd64" ]; then
# this is sometimes necessary for rawhide
set -- --exclude='glibc32*'
fi
for pkg in zlib-devel mesa-libGL-devel ffmpeg-devel gettext-devel libpng-devel SDL2-devel SFML-devel openal-soft-devel wxGTK3-devel gtk2-devel gtk3-devel; do
for pkg in zlib-devel mesa-libGL-devel ffmpeg-devel gettext-devel libpng-devel SDL2-devel SFML-devel openal-soft-devel wxGTK3-devel cairo-devel gtk2-devel gtk3-devel; do
if [ -n "$amd64" ]; then
set -- "$@" "${pkg}.x86_64" "${pkg}.i686"
if [ "$target" = m32 ]; then
set -- "$@" "${pkg}.i686"
else
set -- "$@" "${pkg}.x86_64"
fi
else
set -- "$@" "$pkg"
fi
done
# fedora has a bug where all necessary -devel packages are not pulled in for 32 bit direct -devel deps
# this hacks adds them to the list
if [ -n "$amd64" -a "$target" = m32 ]; then
info_msg 'Calculating dependencies, this will take a while..'
curdeps=
newdeps=$@
while [ "$curdeps" != "$newdeps" ]; do
curdeps=$newdeps
set -- $(echo "$@" $(sudo dnf -y --nogpgcheck repoquery --deplist "$@" 2>/dev/null | sed -n 's/\.x86_64$/.i686/; s/^ *provider: *\([^ ]*-devel-.*\)$/\1/p' | sort -u) | sed 's/ */\n/g' | sort -u)
newdeps=$@
done
fi
else # mingw build
set -- "$@" pkgconfig
case "$target" in
mingw-w64-i686)
target=mingw32
cmake_flags='-DCMAKE_TOOLCHAIN_FILE=../CMakeScripts/Toolchain-cross-MinGW-w64-i686.cmake -DENABLE_LINK=NO'
cmake_flags="$cmake_flags -DCMAKE_TOOLCHAIN_FILE=../CMakeScripts/Toolchain-cross-MinGW-w64-i686.cmake -DENABLE_LINK=NO"
;;
mingw-w64-x86_64)
target=mingw64
cmake_flags='-DCMAKE_TOOLCHAIN_FILE=../CMakeScripts/Toolchain-cross-MinGW-w64-x86_64.cmake -DENABLE_LINK=NO'
cmake_flags="$cmake_flags -DCMAKE_TOOLCHAIN_FILE=../CMakeScripts/Toolchain-cross-MinGW-w64-x86_64.cmake -DENABLE_LINK=NO"
;;
*)
error 'unknown cross target (this should not happen)'
;;
esac
# install static deps
for pkg in zlib gettext libpng SDL2 wxWidgets; do
for pkg in zlib gettext libpng SDL2 wxWidgets cairo; do
set -- "$@" "${target}-${pkg}-static"
done
# install deps that are not available as static
@ -300,26 +352,30 @@ fedora_installdeps() {
warning='SFML is required for LINK support, Fedora does not currently have a MinGW SFML package, if you want LINK support you will need to install it manually'
fi
if ! sudo dnf -y install "$@"; then
if [ -n "$amd64" ]; then
# try without 32 bit packages, this is a problem on rawhide currently
warning 'installing 32 bit packages failed, trying to install 64 bit only packages...'
unset amd64
fedora_installdeps
return $?
else
error 'installing dependencies for Fedora failed' NOQUIT
echo 'The failing command was:'
echo sudo dnf -y install "$@"
quit 1
fi
fi
check sudo dnf -y --nogpgcheck --best --allowerasing install "$@"
warning "$warning"
[ -n "$warning" ] && warning "$warning"
build_instructions
}
archlinux_require_yaourt() {
if ! command -v yaourt >/dev/null; then
(
cd "$tmp"
git clone https://aur.archlinux.org/package-query.git
cd package-query
makepkg --noconfirm -si
cd ..
git clone https://aur.archlinux.org/yaourt.git
cd yaourt
makepkg --noconfirm -si
)
[ $? -ne 0 ] && error 'could not install yaourt'
fi
pacman='yaourt --aur --m-arg=--skipinteg'
}
archlinux_installdeps() {
arch_linux=1
@ -339,17 +395,52 @@ archlinux_installdeps() {
# update catalogs
check $pacman -Sy
if [ -z "$target" ]; then
# common needed dev packages
# not using the base-devel group because it can break gcc-multilib
check $pacman --noconfirm --needed -S binutils file grep gawk gzip libtool make patch sed util-linux nasm cmake pkg-config git
libs="zlib mesa cairo gettext libpng sdl2 openal wxgtk gtk2 gtk3 sfml ffmpeg"
if [ -z "$target" -o "$target" = m32 ]; then
if [ -z "$target" -o -z "$amd64" ]; then
# native build
check $pacman --noconfirm --needed -S base-devel "$gcc_pkg" nasm zlib mesa cairo cmake ffmpeg gettext libpng pkg-config sdl2 sfml openal wxgtk gtk2 gtk3
check $pacman --noconfirm --needed -S "$gcc_pkg" $libs
else
# try to build 32 bit binaries
# lib32-sfml and lib32-ffmpeg are in AUR
archlinux_require_yaourt
# enable multilib repos if not enabled
cp /etc/pacman.conf ${tmp}/pacman.conf
cat <<'EOF' >> ${tmp}/pacman.conf
[multilib-testing]
Include = /etc/pacman.d/mirrorlist
[multilib]
Include = /etc/pacman.d/mirrorlist
EOF
pacman="$pacman --config ${tmp}/pacman.conf"
# pull in multilib repo info
$pacman -Sy
yes | check $pacman --needed -S gcc-multilib
libs32=
for lib in $libs; do
libs32="$libs32 lib32-$lib"
done
check $pacman --noconfirm --needed -S $libs32
fi
else
# windows cross build
case "$target" in
*i686*)
cmake_flags='-DCMAKE_TOOLCHAIN_FILE=../CMakeScripts/Toolchain-cross-MinGW-w64-i686.cmake -DENABLE_LINK=NO'
cmake_flags="$cmake_flags -DCMAKE_TOOLCHAIN_FILE=../CMakeScripts/Toolchain-cross-MinGW-w64-i686.cmake -DENABLE_LINK=NO"
;;
*x86_64*)
cmake_flags='-DCMAKE_TOOLCHAIN_FILE=../CMakeScripts/Toolchain-cross-MinGW-w64-x86_64.cmake -DENABLE_LINK=NO'
cmake_flags="$cmake_flags -DCMAKE_TOOLCHAIN_FILE=../CMakeScripts/Toolchain-cross-MinGW-w64-x86_64.cmake -DENABLE_LINK=NO"
;;
*)
# this will never be reached, it's checked in check_cross()
@ -357,24 +448,9 @@ archlinux_installdeps() {
;;
esac
# base devel packages
check $pacman --noconfirm --needed -S base-devel "$gcc_pkg" nasm cmake git
check $pacman --noconfirm --needed -S "$gcc_pkg"
# now install yaourt if we don't have it
if ! command -v yaourt >/dev/null; then
(
cd "$tmp"
git clone https://aur.archlinux.org/package-query.git
cd package-query
makepkg --noconfirm -si
cd ..
git clone https://aur.archlinux.org/yaourt.git
cd yaourt
makepkg --noconfirm -si
)
[ $? -ne 0 ] && error 'could not install yaourt'
fi
pacman='yaourt --aur --m-arg=--skipinteg'
archlinux_require_yaourt
pkg_prefix='mingw-w64-'
@ -429,8 +505,62 @@ archlinux_installdeps() {
}
solus_installdeps() {
solus=1
check_cross
installing
check sudo eopkg -y update-repo
check sudo eopkg -y install -c system.devel
check sudo eopkg -y install git ffmpeg-devel sdl2-devel SFML-devel openal-soft-devel wxwidgets-devel libgtk-2-devel libgtk-3-devel
check sudo eopkg -y install git
set -- sdl2-devel openal-soft-devel wxwidgets-devel libgtk-2-devel libgtk-3-devel
if [ -n "$amd64" -a "$target" = m32 ]; then
info_msg 'Calculating dependencies, this will take a while..'
# first expand all dep lists recursively
curdeps=
newdeps=$@
while [ "$curdeps" != "$newdeps" ]; do
curdeps=$newdeps
set -- $(echo "$@" $(sudo eopkg info "$@" 2>/dev/null | sed -n 's/^Dependencies *: *\(.*\)/\1/p' | sort -u) | sed 's/ */\n/g' | sort -u)
newdeps=$@
done
# transform to 32bit package names
first=1
for pkg in "$@"; do
if [ "$first" = 1 ]; then
set --
first=0
fi
set -- "$@" "${pkg%-devel}-32bit-devel"
done
# prune the ones that don't exist
first=1
for pkg in "$@"; do
if [ "$first" = 1 ]; then
set --
first=0
fi
if ! sudo eopkg info "$pkg" | grep -q 'not found in binary repositories'; then
set -- "$@" "$pkg"
fi
done
else
# no 32bit versions of these
set -- "$@" SFML-devel ffmpeg-devel
fi
check sudo eopkg -y install "$@"
if [ -n "$amd64" -a "$target" = m32 ]; then
warning 'SFML is required for LINK support, there is no 32 bit SFML package in Solus currently, if you want LINK support you will need to install it manually'
warning 'ffmpeg is required for game recording, there is no 32 bit ffmpeg package in Solus currently, you may wish to install it manually'
cmake_flags="$cmake_flags -DENABLE_LINK=NO -DENABLE_FFMPEG=NO"
fi
build_instructions
}
@ -446,15 +576,29 @@ msys2_installdeps() {
set --
for p in SDL2 cairo ffmpeg openal sfml wxWidgets zlib binutils cmake crt-git extra-cmake-modules gcc gcc-libs gdb headers-git make pkg-config tools-git windows-default-manifest libmangle-git nasm; do
if ! pacman -Q "${target}-${p}" >/dev/null 2>&1; then
set -- "$@" "${target}-${p}"
fi
done
# install
check pacman --noconfirm --needed -S git make zip "$@"
cmake_flags="-G 'MSYS Makefiles'"
cmake_flags="$cmake_flags -G 'MSYS Makefiles'"
if [ "$MSYSTEM" = MSYS ]; then
case "$target" in
*i686)
pre_build=\
"MSYSTEM=MINGW32 bash -l
cd $(pwd)"
;;
*x86_64)
pre_build=\
"MSYSTEM=MINGW64 bash -l
cd $(pwd)"
;;
esac
post_build=exit
fi
build_instructions
}
@ -517,7 +661,7 @@ fink_installdeps() {
warning 'SFML is required for LINK support, there is currently no SFML package for Fink, if you want LINK support you will need to install it manually'
cmake_flags='-DENABLE_LINK=NO'
cmake_flags="$cmake_flags -DENABLE_LINK=NO"
build_instructions
}
@ -527,9 +671,12 @@ build_instructions() {
Done! To build do:
mkdir build && cd build
$pre_build
mkdir -p build && cd build
$cmake .. $cmake_flags
make -j8
$post_build
EOF
}

14
src/wx/CMakeLists.txt
View File

@ -87,7 +87,7 @@ ENDFOREACH()
# check if this build of wx actually has OpenGL support
SET(CMAKE_REQUIRED_LIBRARIES ${MY_CXX_FLAGS} ${MY_C_FLAGS} ${MY_CXX_LINKER_FLAGS} ${MY_C_LINKER_FLAGS} ${CMAKE_REQUIRED_LIBRARIES} ${wxWidgets_LIBRARIES})
SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${MY_CXX_FLAGS} ${MY_C_FLAGS} ${MY_CXX_LINKER_FLAGS} ${MY_C_LINKER_FLAGS} ${wxWidgets_LIBRARIES})
SET(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} ${wxWidgets_CXX_FLAGS} ${MY_CXX_FLAGS} ${MY_C_FLAGS})
SET(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} ${wxWidgets_INCLUDE_DIRS})
@ -97,7 +97,7 @@ FOREACH(DEF ${wxWidgets_DEFINITIONS})
ENDFOREACH()
# CheckCXXSourceCompiles ignores compiler flags, so we have to stuff them into the definitions
SET(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} ${CMAKE_REQUIRED_FLAGS})
SET(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_FLAGS} ${CMAKE_REQUIRED_DEFINITIONS})
INCLUDE(CheckCXXSourceCompiles)
@ -171,6 +171,15 @@ IF(NOT WIN32 AND NOT APPLE)
ELSE()
CHECK_CXX_SYMBOL_EXISTS(__WXGTK20__ ${WX_CONFIG_H} WX_USING_GTK2)
IF(WX_USING_GTK2)
# try to use pkg-config to find gtk2 first
PKG_CHECK_MODULES(GTK2 REQUIRED gtk+-2.0)
IF(GTK2_INCLUDE_DIRS)
INCLUDE_DIRECTORIES(${GTK2_INCLUDE_DIRS})
LINK_DIRECTORIES(${GTK2_LIBRARY_DIRS})
ADD_COMPILE_OPTIONS(${GTK2_CFLAGS_OTHER})
SET(GTK_LIBRARIES ${GTK2_LIBRARIES})
ELSE()
# and if that fails, use the cmake module
FIND_PACKAGE(GTK2 REQUIRED gtk)
IF(NOT GTK2_INCLUDE_DIRS)
MESSAGE(FATAL_ERROR "Could not find gtk2")
@ -178,6 +187,7 @@ IF(NOT WIN32 AND NOT APPLE)
INCLUDE_DIRECTORIES(${GTK2_INCLUDE_DIRS})
ADD_COMPILE_OPTIONS(${GTK2_DEFINITIONS})
SET(GTK_LIBRARIES ${GTK2_LIBRARIES})
ENDIF()
ELSE()
FIND_PACKAGE(GTK REQUIRED gtk)
IF(NOT GTK_INCLUDE_DIRS)