root@Debian-60-squeeze-64-minimal ~/myth/build # cmake ../ -DPREFIX=/opt/server/mythx100 -DCMAKE_C_FLAGS="-O3" -DCMAKE_CXX_FLAGS="-O3" -DCMAKE_BUILD_TYPE=Debug -DWITH_COREDEBUG=1 -DDO_SCRIPTS=true -DCMAKE_DFD_SETSIZE=4096 -DLARGE_CELL=0 -DSHORT_SLEEP=1 -DCMAKE_C_FLAGS=" -march=prescott -m64 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O3 -pipe -pipe -msse3 -fomit-frame-pointer -ffast-math -fno-strength-reduce -fno-strict-aliasing -frename-registers" -DCMAKE_CXX_FLAGS="${CMAKE_C_FLAGS}" -DACE_LIBRARY=/usr/local/lib/libACE.so -DACE_INCLUDE_DIR=/usr/include/
-- The C compiler identification is unknown
-- The CXX compiler identification is GNU 4.7.1
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- broken
CMake Error at /usr/share/cmake-2.8/Modules/CMakeTestCCompiler.cmake:52 (MESSAGE):
The C compiler "/usr/bin/gcc" is not able to compile a simple test program.

It fails with the following output:

Change Dir: /root/myth/build/CMakeFiles/CMakeTmp

Run Build Command:/usr/bin/make "cmTryCompileExec906772026/fast"

/usr/bin/make -f CMakeFiles/cmTryCompileExec906772026.dir/build.make
CMakeFiles/cmTryCompileExec906772026.dir/build

make[1]: Entering directory `/root/myth/build/CMakeFiles/CMakeTmp'

/usr/bin/cmake -E cmake_progress_report
/root/myth/build/CMakeFiles/CMakeTmp/CMakeFiles 1

Building C object
CMakeFiles/cmTryCompileExec906772026.dir/testCCompiler.c.o

/usr/bin/gcc -march=prescott -m64 -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64 -O3 -pipe -pipe -msse3 -fomit-frame-pointer
-ffast-math -fno-strength-reduce -fno-strict-aliasing -frename-registers -o
CMakeFiles/cmTryCompileExec906772026.dir/testCCompiler.c.o -c
/root/myth/build/CMakeFiles/CMakeTmp/testCCompiler.c

/root/myth/build/CMakeFiles/CMakeTmp/testCCompiler.c:1:0: error: CPU you
selected does not support x86-64 instruction set

/root/myth/build/CMakeFiles/CMakeTmp/testCCompiler.c:1:0: error: CPU you
selected does not support x86-64 instruction set

make[1]: *** [CMakeFiles/cmTryCompileExec906772026.dir/testCCompiler.c.o]
Error 1

make[1]: Leaving directory `/root/myth/build/CMakeFiles/CMakeTmp'

make: *** [cmTryCompileExec906772026/fast] Error 2

CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:13 (project)

-- Configuring incomplete, errors occurred!