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Diffstat (limited to 'gcc/doc/install.texi')
| -rw-r--r-- | gcc/doc/install.texi | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index a8f9f8a7980..85899b019c5 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -255,6 +255,22 @@ may need to use @option{--disable-stage1-checking}, though bootstrapping the compiler with such earlier compilers is strongly discouraged. +@item C standard library and headers + +In order to build GCC, the C standard library and headers must be present +for all target variants for which target libraries will be built (and not +only the variant of the host C++ compiler). + +This affects the popular @samp{x86_64-unknown-linux-gnu} platform (among +other multilib targets), for which 64-bit (@samp{x86_64}) and 32-bit +(@samp{i386}) libc headers are usually packaged separately. If you do a +build of a native compiler on @samp{x86_64-unknown-linux-gnu}, make sure you +either have the 32-bit libc developer package properly installed (the exact +name of the package depends on your distro) or you must build GCC as a +64-bit only compiler by configuring with the option +@option{--disable-multilib}. Otherwise, you may encounter an error such as +@samp{fatal error: gnu/stubs-32.h: No such file} + @item GNAT In order to build the Ada compiler (GNAT) you must already have GNAT |