Kai Ruottu <karuottu@xxxxxxxx> writes: > G-Mail wrote: >> I like to know the default include path gcc use. GCC start including >> files in a defined order of directories >> starting with directories defined during build of gcc. I think there >> is an command-line option which list >> each include directory but I can't remember the option. >> >> I know gcc -v ..... > The preprocessor part, 'cpp', uses the headers, not 'gcc', so quite > logically you should try 'cpp -v' and > not 'gcc -v' ! Sorry, what's the problem with gcc -v ? Consider: $ echo | gcc -v -x c -E - Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --program-suffix=-4.1 --enable-__cxa_atexit --enable-clocale=gnu --enable-libstdcxx-debug --enable-mpfr --with-tune=i686 --enable-checking=release i486-linux-gnu Thread model: posix gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21) /usr/lib/gcc/i486-linux-gnu/4.1.2/cc1 -E -quiet -v - -mtune=i686 ignoring nonexistent directory "/usr/local/include/i486-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../i486-linux-gnu/include" ignoring nonexistent directory "/usr/include/i486-linux-gnu" #include "..." search starts here: #include <...> search starts here: /usr/local/include /usr/lib/gcc/i486-linux-gnu/4.1.2/include /usr/include End of search list. # 1 "<stdin>" # 1 "<built-in>" # 1 "<command line>" # 1 "<stdin>" $ echo | gcc -v -x c++ -E - Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --program-suffix=-4.1 --enable-__cxa_atexit --enable-clocale=gnu --enable-libstdcxx-debug --enable-mpfr --with-tune=i686 --enable-checking=release i486-linux-gnu Thread model: posix gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21) /usr/lib/gcc/i486-linux-gnu/4.1.2/cc1plus -E -quiet -v -D_GNU_SOURCE - -mtune=i686 ignoring nonexistent directory "/usr/local/include/i486-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../i486-linux-gnu/include" ignoring nonexistent directory "/usr/include/i486-linux-gnu" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2 /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/i486-linux-gnu /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/backward /usr/local/include /usr/lib/gcc/i486-linux-gnu/4.1.2/include /usr/include End of search list. # 1 "<stdin>" # 1 "<built-in>" # 1 "<command line>" # 1 "<stdin>" $ -- Sergei.
