Hello,

I'm trying to build an LFS (Linux From Scratch) system.
All is going fine until I run:

lfs@lfs:/mnt/lfs/sources/m4-1.4.16$ make check
if test -d ./.git; then \
cd . && \
git submodule --quiet foreach test '$(git rev-parse $sha1)' \
= '$(git merge-base origin $sha1)' \
|| { echo 'maint.mk: found non-public submodule commit' >&2; \
exit 1; }; \
else \
: ; \
fi
make check-recursive
make[1]: Entering directory `/mnt/lfs/sources/m4-1.4.16'
Making check in .
make[2]: Entering directory `/mnt/lfs/sources/m4-1.4.16'
make[2]: Nothing to be done for `check-am'.
make[2]: Leaving directory `/mnt/lfs/sources/m4-1.4.16'
Making check in examples
make[2]: Entering directory `/mnt/lfs/sources/m4-1.4.16/examples'
make[2]: Nothing to be done for `check'.
make[2]: Leaving directory `/mnt/lfs/sources/m4-1.4.16/examples'
Making check in lib
make[2]: Entering directory `/mnt/lfs/sources/m4-1.4.16/lib'
make check-am
make[3]: Entering directory `/mnt/lfs/sources/m4-1.4.16/lib'
gcc -std=gnu99 -I. -g -O2 -MT clean-temp.o -MD -MP -MF .deps/clean-temp.Tpo -c -o clean-temp.o clean-temp.c
In file included from clean-temp.h:22:0,
from clean-temp.c:23:
./stdio.h:477:1: error: 'gets' undeclared here (not in a function)
make[3]: *** [clean-temp.o] Error 1
make[3]: Leaving directory `/mnt/lfs/sources/m4-1.4.16/lib'
make[2]: *** [check] Error 2
make[2]: Leaving directory `/mnt/lfs/sources/m4-1.4.16/lib'
make[1]: *** [check-recursive] Error 1
make[1]: Leaving directory `/mnt/lfs/sources/m4-1.4.16'
make: *** [check] Error 2
lfs@lfs:/mnt/lfs/sources/m4-1.4.16$ make check
if test -d ./.git; then \
cd . && \
git submodule --quiet foreach test '$(git rev-parse $sha1)' \
= '$(git merge-base origin $sha1)' \
|| { echo 'maint.mk: found non-public submodule commit' >&2; \
exit 1; }; \
else \
: ; \
fi
make check-recursive
make[1]: Entering directory `/mnt/lfs/sources/m4-1.4.16'
Making check in .
make[2]: Entering directory `/mnt/lfs/sources/m4-1.4.16'
make[2]: Nothing to be done for `check-am'.
make[2]: Leaving directory `/mnt/lfs/sources/m4-1.4.16'
Making check in examples
make[2]: Entering directory `/mnt/lfs/sources/m4-1.4.16/examples'
make[2]: Nothing to be done for `check'.
make[2]: Leaving directory `/mnt/lfs/sources/m4-1.4.16/examples'
Making check in lib
make[2]: Entering directory `/mnt/lfs/sources/m4-1.4.16/lib'
make check-am
make[3]: Entering directory `/mnt/lfs/sources/m4-1.4.16/lib'
gcc -std=gnu99 -I. -g -O2 -MT clean-temp.o -MD -MP -MF .deps/clean-temp.Tpo -c -o clean-temp.o clean-temp.c
In file included from clean-temp.h:22:0,
from clean-temp.c:23:
./stdio.h:477:1: error: 'gets' undeclared here (not in a function)
make[3]: *** [clean-temp.o] Error 1
make[3]: Leaving directory `/mnt/lfs/sources/m4-1.4.16/lib'
make[2]: *** [check] Error 2
make[2]: Leaving directory `/mnt/lfs/sources/m4-1.4.16/lib'
make[1]: *** [check-recursive] Error 1
make[1]: Leaving directory `/mnt/lfs/sources/m4-1.4.16'
make: *** [check] Error 2
lfs@lfs:/mnt/lfs/sources/m4-1.4.16$

Does anybody know why I get these errors?

Thanks in advance.

Hi,

I quote:

"Since the 2.16 release of the glibc, 'gets' is not any more defined in the gnulib.
No m4 version synchronized with gnulib since [1] has been released yet."
...

[1] http://git.savannah.gnu.org/gitweb/?...5140fa0c807348

This causes gets compile errors on systems with glibc >= 2.16 with sources that still assume the previous definition.

The following link contains a patch for the M4 source, that is supposed to fix this:
http://git.buildroot.net/buildroot/p...-no-gets.patch

Above as the long version of 'Must brush up Google Fu',
See "man patch" for details on applying patches to source code

Regards

@vitronix: This seems to be from chapter 5. This from the book about running make check in chapter 5:In other words: Don't run the test when working on chapter 5 (you _do_ need to run them in chapter 6).