diff options
Diffstat (limited to 'recipes/gcc/gcc-3.4.4/gcc-cross-fixincl.patch')
| -rw-r--r-- | recipes/gcc/gcc-3.4.4/gcc-cross-fixincl.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/recipes/gcc/gcc-3.4.4/gcc-cross-fixincl.patch b/recipes/gcc/gcc-3.4.4/gcc-cross-fixincl.patch new file mode 100644 index 0000000000..365485497c --- /dev/null +++ b/recipes/gcc/gcc-3.4.4/gcc-cross-fixincl.patch @@ -0,0 +1,77 @@ +See http://gcc.gnu.org/PR22541 + +From: Dan Kegel + +When building gcc-3.4.3 or gcc-4.0.0 as a cross into a clean $PREFIX +(the only two I've tried like this), the configure script happily copies +the glibc include files from include to sys-include; here's the line +from the log file (with $PREFIX instead of the real prefix): + +Copying $PREFIX/i686-unknown-linux-gnu/include to $PREFIX/i686-unknown-linux-gnu/sys-include + +But later, when running fixincludes, it gives the error message + The directory that should contain system headers does not exist: + $PREFIX/lib/gcc/i686-unknown-linux-gnu/3.4.3/../../../../i686-unknown-linux-gnu/sys-include + +Nevertheless, it continues building; the header files it installs in + $PREFIX/lib/gcc/i686-unknown-linux-gnu/3.4.3/include +do not include the boilerplate that would cause it to #include_next the +glibc headers in the system header directory. +Thus the resulting toolchain can't compile the following program: +#include <limits.h> +int x = PATH_MAX; +because its limits.h doesn't include the glibc header. + +That's not nice. I suspect the problem is that gcc/Makefile.in assumes that +it can refer to $PREFIX/i686-unknown-linux-gnu with the path + $PREFIX/lib/../i686-unknown-linux-gnu, but +that fails because the directory $PREFIX/lib doesn't exist during 'make all'; +it is only created later, during 'make install'. (Which makes this problem +confusing, since one only notices the breakage well after 'make install', +at which point the path configure complained about does exist, and has the +right stuff in it.) + +A possible fix is to replace the line in gcc/Makefile.in that says + SYSTEM_HEADER_DIR = @SYSTEM_HEADER_DIR@ +with a version that gets rid of extra ..'s, e.g. + SYSTEM_HEADER_DIR = `echo @SYSTEM_HEADER_DIR@ | sed -e :a -e "s,[^/]*/\.\.\/,,;ta"` +(hey, that's the first time I've ever used a label in a sed script; thanks to the sed faq +for explaining the :a ... ta method of looping to repeat a search-and-replace until it doesn't match.) + + +--- + gcc/Makefile.in | 10 ++++++++-- + 1 file changed, 8 insertions(+), 2 deletions(-) + +Index: gcc-3.4.4/gcc/Makefile.in +=================================================================== +--- gcc-3.4.4.orig/gcc/Makefile.in 2008-07-23 23:44:15.000000000 -0700 ++++ gcc-3.4.4/gcc/Makefile.in 2008-07-23 23:46:54.000000000 -0700 +@@ -350,7 +350,10 @@ NATIVE_SYSTEM_HEADER_DIR = /usr/include + CROSS_SYSTEM_HEADER_DIR = @CROSS_SYSTEM_HEADER_DIR@ + + # autoconf sets SYSTEM_HEADER_DIR to one of the above. +-SYSTEM_HEADER_DIR = @SYSTEM_HEADER_DIR@ ++# Purge it of unneccessary internal relative paths ++# to directories that might not exist yet. ++# The sed idiom for this is to repeat the search-and-replace until it doesn't match, using :a ... ta. ++SYSTEM_HEADER_DIR = `echo @SYSTEM_HEADER_DIR@ | sed -e :a -e "s,[^/]*/\.\.\/,," -e ta` + + # Control whether to run fixproto and fixincludes. + STMP_FIXPROTO = @STMP_FIXPROTO@ +@@ -2548,11 +2551,14 @@ install-gcc-tooldir: + $(SHELL) ${srcdir}/mkinstalldirs $(DESTDIR)$(gcc_tooldir) + + # Build fixed copies of system files. ++# Abort if no system headers available, unless building a crosscompiler. ++# FIXME: abort unless building --without-headers would be more accurate and less ugly ++ + stmp-fixinc: fixinc.sh gsyslimits.h + @if ! $(inhibit_libc) && test ! -d ${SYSTEM_HEADER_DIR}; then \ + echo The directory that should contain system headers does not exist: >&2 ; \ + echo " ${SYSTEM_HEADER_DIR}" >&2 ; \ +- if test "x${SYSTEM_HEADER_DIR}" = "x${gcc_tooldir}/sys-include"; \ ++ if test "x${SYSTEM_HEADER_DIR}" = "x`echo "${gcc_tooldir}/sys-include" | sed -e :a -e "s,[^/]*/\.\.\/,," -e ta`"; \ + then sleep 1; else exit 1; fi; \ + fi + rm -rf include; mkdir include |