Hello, all! When running "make" I get an error: make[3]: *** No rule to make target `/usr/home/firebird/firebird/trunk/src/yvalve/gds_proto.h)', needed by `/usr/home/firebird/firebird/trunk/temp/Release/gpre/boot/gpre_meta_boot.o'. Stop. Let me explain, why do I ask in this list. Error happens due to broken structure of dependency files, created using -MMD switch of g++. Normally that file has the following layout: /usr/home/firebird/firebird/trunk/temp/Release/gpre/c_cxx.o: $(wildcard \ /usr/home/firebird/firebird/trunk/src/gpre/c_cxx.cpp \ /usr/home/firebird/firebird/trunk/src/include/firebird.h \ /usr/home/firebird/firebird/trunk/src/include/gen/autoconfig.h \ .................... /usr/home/firebird/firebird/trunk/src/include/ProviderInterface.h \ /usr/home/firebird/firebird/trunk/src/common/classes/Interface.h) But for some files I get: \ /usr/home/firebird/firebird/trunk/temp/Release/gpre/boot/gpre_meta_boot.o: \ /usr/home/firebird/firebird/trunk/src/gpre/boot/gpre_meta_boot.cpp \ /usr/home/firebird/firebird/trunk/src/include/firebird.h \ ........................ /usr/home/firebird/firebird/trunk/src/yvalve/gds_proto.h) I.e. extra line with single backslash in the beginning and missing '$(wildcard' make's function after object file name. My problem happens only for x86 builds with optimization, for x64 or without optimization I've never seen it. I can reliably reproduce it for the following versions: gcc (Debian 4.3.2-1.1) 4.3.2 gcc (GCC) 4.3.3 gcc (GCC) 3.3.6 First one (where bug was noted initially) is Debian binary, two last were built from clean sources, taken from official gcc repository (base & g++ tar files were used). I've specially tried rather old gcc version to check, does it help or not, but bug happens for all compilers. What is specially surprising - for different gcc versions I get damaged dependency files for different source files. On the other hand, for particular compiler it happens always with particular source file and does not depend upon 'make -j1' or 'make -j4' was used. All this taken together makes me think, that this is gcc problem. But may be I miss something obvious? I can provide any additional information required, but do not want to overload first letter with probably unneeded details. May be command line options only: g++ -ggdb -DFB_SEND_FLAGS=MSG_NOSIGNAL -DLINUX -pipe -MMD -fPIC -fmessage-length=0 -O3 -march=i586 -mcpu=i686 -fno-omit-frame-pointer -I/usr/home/firebird/firebird/trunk/src/include/gen -I/usr/home/firebird/firebird/trunk/src/include -pthread -pthread -c /usr/home/firebird/firebird/trunk/src/gpre/boot/gpre_meta_boot.cpp -o /usr/home/firebird/firebird/trunk/temp/Release/gpre/boot/gpre_meta_boot.o And one thought - typically this happens for relatively long paths. May be compiler tries to build better looking ddependency file but has some old bug in this less tested branch of code? Alex.