Even stranger, when I try to manually include the directory stddef.h is in, I get the following: -------- $ gcc prog.c -I/usr/lib/gcc/i686-linux-gnu/4.4.5/include gcc: selected multilib '.' not installed -------- The (start of the) output with -v is: -------- Using built-in specs. Target: i686-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.4.4-14ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.4 --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu Thread model: posix gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5) COLLECT_GCC_OPTIONS='-I/usr/lib/gcc/i686-linux-gnu/4.4.5/include' '-v' '-mtune=generic' '-march=i686' /usr/lib/gcc/i686-linux-gnu/4.4.5/cc1 -quiet -v -I/usr/lib/gcc/i686-linux-gnu/4.4.5/include -iprefix ../lib/gcc/i686-linux-gnu/4.4.5/ test.c -D_FORTIFY_SOURCE=2 -quiet -dumpbase test.c -mtune=generic -march=i686 -auxbase test -version -fstack-protector -o /tmp/ccrdgtAk.s ignoring nonexistent directory "../lib/gcc/i686-linux-gnu/4.4.5/include" ignoring nonexistent directory "../lib/gcc/i686-linux-gnu/4.4.5/include-fixed" ignoring nonexistent directory "../lib/gcc/i686-linux-gnu/4.4.5/../../../../i686-linux-gnu/include" ignoring nonexistent directory "/usr/local/include/i686-linux-gnu" ignoring nonexistent directory "../lib/gcc/i686-linux-gnu/4.4.5/include" ignoring nonexistent directory "../lib/gcc/i686-linux-gnu/4.4.5/include-fixed" ignoring nonexistent directory "../i686-linux-gnu/include" ignoring nonexistent directory "/usr/include/i686-linux-gnu" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/i686-linux-gnu/4.4.5/include /usr/local/include /usr/include End of search list. -------- John G
