Package: gcc-6
Version: 6.2.0-10
Severity: serious
X-Debbugs-CC: lede-dev@lists.infradead.org
There is a regression after gcc-6 6.2.0-6. I get following output when
trying to compile LEDE/OpenWrt "Please install a static zlib"
This is wrong
$ ls -ltr /usr/lib/x86_64-linux-gnu/libz.a
-rw-r--r-- 1 root root 149834 Nov 27 2014 /usr/lib/x86_64-linux-gnu/libz.a
Following can be found in their include/prereq-build.mk
ifeq ($(HOST_OS),Linux)
zlib_link_flags := -Wl,-Bstatic -lz -Wl,-Bdynamic
else
zlib_link_flags := -lz
endif
$(eval $(call TestHostCommand,zlib, \
Please install a static zlib. (Missing libz.a or zlib.h), \
echo 'int main(int argc, char **argv) { gzdopen(0, "rb"); return 0; }' | \
gcc -include zlib.h -x c -o $(TMP_DIR)/a.out - $(zlib_link_flags)))
Testing it with gcc-6 6.2.0-6 works:
$ echo 'int main(int argc, char **argv) { gzdopen(0, "rb"); return 0;
}' | gcc -include zlib.h -x c -o a.out - -Wl,-Bstatic -lz
-Wl,-Bdynamic
$ echo $?
0
with gcc-6 6.2.0-10 fails:
$ echo 'int main(int argc, char **argv) { gzdopen(0, "rb"); return 0;
}' | gcc -include zlib.h -x c -o a.out - -Wl,-Bstatic -lz
-Wl,-Bdynamic
/usr/bin/ld:
/usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libz.a(gzlib.o):
relocation R_X86_64_32S against `.rodata' can not be used when making
a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status
$ echo $?
1
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