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				https://github.com/Z3Prover/z3
				synced 2025-11-03 21:09:11 +00:00 
			
		
		
		
	improving clang++ support
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
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					 7 changed files with 33 additions and 59 deletions
				
			
		
							
								
								
									
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			@ -40,7 +40,7 @@ Remark: clang does not support OpenMP yet.
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   autoconf
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   ./configure CXX=clang++
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   python scripts/mk_make.py --noomp
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   python scripts/mk_make.py
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   cd build
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   make
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										47
									
								
								configure.ac
									
										
									
									
									
								
							
							
						
						
									
										47
									
								
								configure.ac
									
										
									
									
									
								
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			@ -83,7 +83,7 @@ fi
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###################
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# Sets CXX
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AC_LANG([C++])
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AC_PROG_CXX(g++ false)
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AC_PROG_CXX(g++ clang++ false)
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AC_PROG_CC
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if test $CXX = "false"; then
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   AC_MSG_ERROR([C++ compiler was not found])
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			@ -99,8 +99,21 @@ AC_PROG_GREP
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# Sets SED
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AC_PROG_SED
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# Sets OPENMP_CFLAGS
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m4_ifdef([AC_OPENMP], [AC_OPENMP])
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AS_IF([test "$CXX" = "g++"], [
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   # Enable OpenMP
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   CXXFLAGS+=" -fopenmp"  
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   LDFLAGS+=" -fopenmp"
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   SLIBEXTRAFLAGS+=" -fopenmp"
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   # Use -mfpmath=sse
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   CXXFLAGS+=" -mfpmath=sse"
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],
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      [test "$CXX" = "clang++"], [
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   # OpenMP is not supported in clang++
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   CXXFLAGS+=" -D _NO_OMP_"  
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],
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[
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  AC_MSG_ERROR([Unsupported compiler: $CXX])
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])
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AR=ar
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AC_SUBST(AR)
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			@ -115,30 +128,25 @@ host_os=`uname -s`
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AS_IF([test "$host_os" = "Darwin"], [
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  PLATFORM=osx
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  SO_EXT=.dylib
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  LDFLAGS=
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  SLIBFLAGS="-dynamiclib"
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  SLIBEXTRAFLAGS=""
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  SLIBFLAGS+="-dynamiclib"
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  COMP_VERSIONS="-compatibility_version \$(Z3_VERSION) -current_version \$(Z3_VERSION)"
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  STATIC_FLAGS=
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], [test "$host_os" = "Linux"], [
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  PLATFORM=linux
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  SO_EXT=.so
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  LDFLAGS=-lrt
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  SLIBFLAGS="-shared"
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  SLIBEXTRAFLAGS=
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  SLIBFLAGS+="-shared"
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  COMP_VERSIONS=
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  STATIC_FLAGS=-static
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  CXXFLAGS+=" -fno-strict-aliasing"
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  if test "$CXX" = "clang++"; then
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     # More flags for clang++ for Linux
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     CXXFLAGS+=" -Wno-unknown-pragmas -Wno-overloaded-virtual -Wno-unused-value"
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     SLIBEXTRAFLAGS+=" -lrt"
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  fi
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  SLIBEXTRAFLAGS+=" -lrt"
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], [test "${host_os:0:6}" = "CYGWIN"], [
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   PLATFORM=win
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   SO_EXT=.dll
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   LDFLAGS=
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   SLIBFLAGS="-shared"
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   SLIBEXTRAFLAGS=
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   SLIBFLAGS+="-shared"
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   COMP_VERSIONS=
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   CXXFLAGS+=" -D_CYGWIN -fno-strict-aliasing"
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],
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			@ -146,11 +154,6 @@ AS_IF([test "$host_os" = "Darwin"], [
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  AC_MSG_ERROR([Unknown host platform: $host_os])
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])
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# Only add -mfpmath=sse if g++
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if test "$CXX" = "g++"; then
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   CXXFLAGS+=" -mfpmath=sse"
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fi
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AC_SUBST(SLIBFLAGS)
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AC_SUBST(LDFLAGS)
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AC_SUBST(SLIBEXTRAFLAGS)
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			@ -189,22 +192,18 @@ AC_OUTPUT(scripts/config-debug.mk scripts/config-release.mk)
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#
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###################
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MKMAKE_OPT=
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if test "$CXX" = "clang++"; then
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   MKMAKE_OPT="--noomp"
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fi
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# Python is available, give user the option to generate the make files wherever they want
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cat <<EOF
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Z3 was configured with success.
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Host platform:  $PLATFORM
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Compiler:       $CXX
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Arithmetic:     $ARITH
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Python:         $PYTHON 
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Prefix:         $prefix
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64-bit:         $IS_X64
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To build and install Z3, execute:
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   python scripts/mk_make.py $MKMAKE_OPT
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   python scripts/mk_make.py
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   cd build
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   make
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   sudo make install
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			@ -1,6 +1,6 @@
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CC=cl
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CXX=cl
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CXXFLAGS=/c /Zi /nologo /W3 /WX- /Od /Oy- /D WIN32 /D _AMD64_ /D _DEBUG /D Z3DEBUG /D _CONSOLE /D _TRACE /D _WINDOWS /Gm /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Gd /analyze- 
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CXXFLAGS=/c /Zi /nologo /openmp /W3 /WX- /Od /Oy- /D WIN32 /D _AMD64_ /D _DEBUG /D Z3DEBUG /D _CONSOLE /D _TRACE /D _WINDOWS /Gm /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Gd /analyze- 
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CXX_OUT_FLAG=/Fo
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OBJ_EXT=.obj
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LIB_EXT=.lib
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			@ -1,6 +1,6 @@
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CC=cl
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CXX=cl
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CXXFLAGS=/c /Zi /nologo /W3 /WX- /Od /Oy- /D WIN32 /D _DEBUG /D Z3DEBUG /D _CONSOLE /D _TRACE /D _WINDOWS /Gm /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Gd /analyze- /arch:SSE2
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CXXFLAGS=/c /Zi /nologo /openmp /W3 /WX- /Od /Oy- /D WIN32 /D _DEBUG /D Z3DEBUG /D _CONSOLE /D _TRACE /D _WINDOWS /Gm /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Gd /analyze- /arch:SSE2
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CXX_OUT_FLAG=/Fo
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OBJ_EXT=.obj
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LIB_EXT=.lib
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			@ -1,6 +1,6 @@
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CC=cl
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CXX=cl
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CXXFLAGS=/c /Zi /nologo /W3 /WX- /O2 /D _EXTERNAL_RELEASE /D WIN32 /D NDEBUG /D _LIB /D _WINDOWS /D _AMD64_ /D _UNICODE /D UNICODE /Gm- /EHsc /MD /GS /fp:precise /Zc:wchar_t /Zc:forScope /Gd /TP 
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CXXFLAGS=/c /Zi /nologo /openmp /W3 /WX- /O2 /D _EXTERNAL_RELEASE /D WIN32 /D NDEBUG /D _LIB /D _WINDOWS /D _AMD64_ /D _UNICODE /D UNICODE /Gm- /EHsc /MD /GS /fp:precise /Zc:wchar_t /Zc:forScope /Gd /TP 
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CXX_OUT_FLAG=/Fo
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OBJ_EXT=.obj
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LIB_EXT=.lib
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			@ -1,6 +1,6 @@
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CC=cl
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CXX=cl
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CXXFLAGS=/nologo /c /Zi /W3 /WX- /O2 /Oy- /D _EXTERNAL_RELEASE /D WIN32 /D NDEBUG /D _CONSOLE /D _WINDOWS /D ASYNC_COMMANDS /Gm- /EHsc /MD /GS /fp:precise /Zc:wchar_t /Zc:forScope /Gd /analyze- /arch:SSE2
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CXXFLAGS=/nologo /c /Zi /openmp /W3 /WX- /O2 /Oy- /D _EXTERNAL_RELEASE /D WIN32 /D NDEBUG /D _CONSOLE /D _WINDOWS /D ASYNC_COMMANDS /Gm- /EHsc /MD /GS /fp:precise /Zc:wchar_t /Zc:forScope /Gd /analyze- /arch:SSE2
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CXX_OUT_FLAG=/Fo
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OBJ_EXT=.obj
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LIB_EXT=.lib
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			@ -40,7 +40,6 @@ Z3PY_SRC_DIR=None
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VS_PROJ = False
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TRACE = False
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DOTNET_ENABLED=False
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OMP = True
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VER_MAJOR=None
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VER_MINOR=None
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			@ -121,12 +120,11 @@ def display_help():
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    print "  -v, --vsproj                  generate Visual Studio Project Files."
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    print "  -t, --trace                   enable tracing in release mode."
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    print "  -n, --nodotnet                do not generate Microsoft.Z3.dll make rules."
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    print "  --noomp                       disable support for openmp."
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    exit(0)
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# Parse configuration option for mk_make script
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def parse_options():
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    global VERBOSE, DEBUG_MODE, IS_WINDOWS, VS_X64, ONLY_MAKEFILES, SHOW_CPPS, VS_PROJ, TRACE, DOTNET_ENABLED, OMP
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    global VERBOSE, DEBUG_MODE, IS_WINDOWS, VS_X64, ONLY_MAKEFILES, SHOW_CPPS, VS_PROJ, TRACE, DOTNET_ENABLED
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    options, remainder = getopt.gnu_getopt(sys.argv[1:], 'b:dsxhmcvtn', ['build=', 
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                                                                         'debug',
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                                                                         'silent',
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			@ -136,8 +134,7 @@ def parse_options():
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                                                                         'showcpp',
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                                                                         'vsproj',
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                                                                         'trace',
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                                                                         'nodotnet',
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                                                                         'noomp'
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                                                                         'nodotnet'
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                                                                         ])
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    for opt, arg in options:
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        if opt in ('-b', '--build'):
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			@ -164,8 +161,6 @@ def parse_options():
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            TRACE = True
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        elif opt in ('-n', '--nodotnet'):
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            DOTNET_ENABLED = False
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        elif opt in ('--noomp'):
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            OMP = False
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        else:
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            raise MKException("Invalid command line option '%s'" % opt)
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			@ -347,17 +342,6 @@ class Component:
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                extra_opt = '/D _TRACE'
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            else:
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                extra_opt = '-D _TRACE'
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        if not OMP:
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            if IS_WINDOWS:
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                extra_opt = '%s /D _NO_OMP_' % extra_opt
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            else:
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                extra_opt = '%s -D _NO_OMP_' % extra_opt
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        else:
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            if IS_WINDOWS:
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                extra_opt = '%s /openmp' % extra_opt
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            else:
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                extra_opt = '%s -fopenmp' % extra_opt
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        out.write('\t@$(CXX) $(CXXFLAGS) %s $(%s) $(CXX_OUT_FLAG)%s %s\n' % (extra_opt, include_defs, objfile, srcfile))
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    def mk_makefile(self, out):
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			@ -492,10 +476,7 @@ class ExeComponent(Component):
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        for dep in deps:
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            c_dep = get_component(dep)
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            out.write(' %s/%s$(LIB_EXT)' % (c_dep.build_dir, c_dep.name))
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        extra_flags = ''
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        if OMP and not IS_WINDOWS:
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            extra_flags = '-fopenmp'
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        out.write(' $(LINK_EXTRA_FLAGS) %s\n' % extra_flags)
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        out.write(' $(LINK_EXTRA_FLAGS)\n')
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        out.write('%s: %s\n\n' % (self.name, exefile))
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    def require_install_tactics(self):
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			@ -571,10 +552,7 @@ class DLLComponent(Component):
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            if not dep in self.reexports:
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                c_dep = get_component(dep)
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                out.write(' %s/%s$(LIB_EXT)' % (c_dep.build_dir, c_dep.name))
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        extra_flags= ''
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        if OMP and not IS_WINDOWS:
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            extra_flags = '-fopenmp'
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        out.write(' $(SLINK_EXTRA_FLAGS) %s' % extra_flags)
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        out.write(' $(SLINK_EXTRA_FLAGS)')
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        if IS_WINDOWS:
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            out.write(' /DEF:%s/%s.def' % (self.to_src_dir, self.name))
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        out.write('\n')
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			@ -701,10 +679,7 @@ class CppExampleComponent(ExampleComponent):
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            out.write('%s.lib' % dll_name)
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        else:
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            out.write(dll)
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        extra_flags = ''
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        if OMP and not IS_WINDOWS:
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            extra_flags = '-fopenmp'
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        out.write(' $(LINK_EXTRA_FLAGS) %s\n' % extra_flags)
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        out.write(' $(LINK_EXTRA_FLAGS)\n')
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        out.write('_ex_%s: %s\n\n' % (self.name, exefile))
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class CExampleComponent(CppExampleComponent):
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