MTD 248-645A Bedienungsanleitung PDF herunterladen (Seite 126)

Linux From Scratch - Version 7.0

106

Important

In this section, the test suite for GCC is considered critical. Do not skip it under any circumstance.

One set of tests in the GCC test suite is known to exhaust the stack, so increase the stack size prior to running the tests:

ulimit -s 16384

Test the results, but do not stop at errors:

make -k check

To receive a summary of the test suite results, run:

../gcc-4.6.1/contrib/test_summary

For only the summaries, pipe the output through grep -A7 Summ.

Results can be compared with those located at http://www.linuxfromscratch.org/lfs/build-logs/7.0/ and http://gcc.gnu.

org/ml/gcc-testresults/.

A few unexpected failures cannot always be avoided. The GCC developers are usually aware of these issues, but have

not resolved them yet. In particular, the libmudflap tests are known be particularly problematic as a result of a

bug in GCC (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20003). Unless the test results are vastly different from

those at the above URL, it is safe to continue.

Install the package:

make install

Some packages expect the C preprocessor to be installed in the /lib directory. To support those packages, create

this symlink:

ln -sv ../usr/bin/cpp /lib

Many packages use the name cc to call the C compiler. To satisfy those packages, create a symlink:

ln -sv gcc /usr/bin/cc

Now that our final toolchain is in place, it is important to again ensure that compiling and linking will work as

expected. We do this by performing the same sanity checks as we did earlier in the chapter:

echo 'main(){}' > dummy.c

cc dummy.c -v -Wl,--verbose &> dummy.log

readelf -l a.out | grep ': /lib'

If everything is working correctly, there should be no errors, and the output of the last command will be (allowing

for platform-specific differences in dynamic linker name):

[Requesting program interpreter: /lib/ld-linux.so.2]

Now make sure that we're setup to use the correct startfiles:

grep -o '/usr/lib.*/crt[1in].*succeeded' dummy.log

1 2 ... 121 122 123 124 125 126 127 128 129 130 131 ... 346 347

Keine Kommentare

MTD 248-645A Bedienungsanleitung Seite 126