I have installed both

sezero_20100711_w32_runtime_update_3405.zip
mingw-w32-bin_i686-mingw_20100711_sezero.zip

on my Windows XP SP3 x86 machine. I tried to compile

tbb30_20100406oss_src.tgz

but to no avail. Build command 'mingw32-make compiler=gcc'

Installing the program

make-3.82-3-mingw32-bin.tar.lzma from www.mingw.org fixed the issue.

Anybody having similar issues?

For the benefit of the mailing list, my objective was to build
OpenCV-2.1.0-win.zip

I uncompressed  the included folder to d:\OpenCV-2.1.0 and I configured 
with cmake (GUI)  to build in d:\opencv-build

I disabled BUILD_NEW_PYTHON_SUPPORT

and I put D:/tbb30_20100406oss/include for TBB_INCLUDE_DIR
and D:/tbb30_20100406oss/build/windows_ia32_gcc_mingw_release for 
TBB_LIB_DIR

CMAKE_CXX_FLAGS_RELEASE -> please make it O2
CMAKE_C_FLAGS_RELEASE -> please make it O2
disable USE_O3

(I enabled SSE3 for my Prescot P4 CPU)
(I had issues with debugging)

mingw32-make fails because in link.txt 
(opencv_build\src\highgui\CMakeFiles\highgui.dir) libraries are 
missconfigured

replace -lvfw32 with -lmsvfw32 -lavifil32 -lavicap32

Have fun.

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