Public bug reported:
The stock ubuntu system compiler (gcc / g++)
as shipped cannot compile my program,
because in its specs it adds '-pie' to the
command line of EVERY collect2 invocation:
Example:
<pre>
$ g++ -std=gnu++17 ... -fPIC -c test.C
$ g++ --verbose -fPIC -fpic -o test test.o -lstdc++ -lrt -lm -ldl -lc
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
7.4.0-1ubuntu1~18.04.1' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-7
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-fpic' '-o' 'mmaps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/7/collect2 -plugin
/usr/lib/gcc/x86_64-linux-gnu/7/liblto_plugin.so
-plugin-opt=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
-plugin-opt=-fresolution=/tmp/cch3HaRz.res -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lc
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc --sysroot=/
--build-id --eh-frame-hdr -m elf_x86_64 --hash-style=gnu --as-needed
-dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie -z now -z relro -o test
/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/Scrt1.o
/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crti.o
/usr/lib/gcc/x86_64-linux-gnu/7/crtbeginS.o -L/usr/lib/gcc/x86_64-linux-gnu/7
-L/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu
-L/usr/lib/gcc/x86_64-linux-gnu/7/../../../../lib -L/lib/x86_64-linux-gnu
-L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib
-L/usr/lib/gcc/x86_64-linux-gnu/7/../../.. test.o -lstdc++ -lrt -ldl -lstdc++
-lm -lc -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/lib/gcc/x86_64-linux-gnu/7/crtendS.o
/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crtn.o
/usr/bin/ld: test.o: relocation R_X86_64_32S against `.data' can not be used
when making a PIE object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status
</pre>
Note your g++'s specs file is specifying '-pie' - it shouldn't.
I do not want to make an -pie executable.
Why is Ubuntu forcing me to do so, and what is more, failing to do so ,
when I did not ask it to ?
I have specified -fPIC to build the object, and -fpic to link the executable,
so the specs should not be specifying '-pie' !
<pre>
$ g++ -dumpspecs
*asm:
%{m16|m32:--32} %{m16|m32|mx32:;:--64} %{mx32:--x32}
%{msse2avx:%{!mavx:-msse2avx}}
*asm_debug:
%{%:debug-level-gt(0):%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}
%{fdebug-prefix-map=*:--debug-prefix-map %*}
*asm_final:
%{gsplit-dwarf:
objcopy --extract-dwo %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O}
%{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo}
objcopy --strip-dwo %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} }
*asm_options:
%{-target-help:%:print-asm-header()} %{v} %{w:-W} %{I*}
%{gz|gz=zlib:--compress-debug-sections=zlib}
%{gz=none:--compress-debug-sections=none}
%{gz=zlib-gnu:--compress-debug-sections=zlib-gnu} %a %Y %{c:%W{o*}%{!o*:-o
%w%b%O}}%{!c:-o %d%w%u%O}
*invoke_as:
%{!fwpa*: %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}
%{!S:-o %|.s |
as %(asm_options) %m.s %A } }
*cpp:
%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}
*cpp_options:
%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}
%{f*} %{g*:%{%:debug-level-gt(0):%{g*}
%{!fno-working-directory:-fworking-directory}}} %{O*} %{undef}
%{save-temps*:-fpch-preprocess} %(ssp_default)
*cpp_debug_options:
%{d*}
*cpp_unique_options:
%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I %{MD:-MD
%{!o:%b.d}%{o*:%.d%*}} %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}} %{M} %{MM} %{MF*}
%{MG} %{MP} %{MQ*} %{MT*} %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ
%*}}}}}}} %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}
%{!iplugindir*:%{fplugin*:%:find-plugindir()}} %{H} %C %{D*&U*&A*} %{i*} %Z %i
%{E|M|MM:%W{o*}}
*trad_capable_cpp:
cc1 -E %{traditional|traditional-cpp:-traditional-cpp}
*cc1:
%{!mandroid|tno-android-cc:%(cc1_cpu) %{profile:-p};:%(cc1_cpu) %{profile:-p}
%{!mglibc:%{!muclibc:%{!mbionic: -mbionic}}}
%{!fno-pic:%{!fno-PIC:%{!fpic:%{!fPIC: -fPIC}}}}}
*cc1_options:
%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}
%{!iplugindir*:%{fplugin*:%:find-plugindir()}} %1 %{!Q:-quiet}
%{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}
%{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)}
%{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase
%b}}}%{!c:%{!S:-auxbase %b}} %{g*} %{O*} %{W*&pedantic*} %{w}
%{std*&ansi&trigraphs} %{v:-version} %{pg:-p} %{p} %{f*} %{undef}
%{Qn:-fno-ident} %{Qy:} %{-help:--help} %{-target-help:--target-help}
%{-version:--version} %{-help=*:--help=%*} %{!fsyntax-only:%{S:%W{o*}%{!o*:-o
%b.s}}} %{fsyntax-only:-o %j} %{-param*} %{coverage:-fprofile-arcs
-ftest-coverage} %{fprofile-arcs|fprofile-generate*|coverage:
%{!fprofile-update=single: %{pthread:-fprofile-update=prefer-atomic}}}
*cc1plus:
*link_gcc_c_sequence:
%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}
*link_ssp:
%{fstack-protector|fstack-protector-all|fstack-protector-strong|fstack-protector-explicit:}
*ssp_default:
%{!fno-stack-protector:%{!fstack-protector-all:%{!ffreestanding:%{!nostdlib:%{!fstack-protector:-fstack-protector-strong}}}}}
%{!Wformat:%{!Wformat=2:%{!Wformat=0:%{!Wall:-Wformat}
%{!Wno-format-security:-Wformat-security}}}}
*endfile:
%{!mandroid|tno-android-ld:%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}
%{mpc32:crtprec32.o%s} %{mpc64:crtprec64.o%s} %{mpc80:crtprec80.o%s}
%{fvtable-verify=none:%s; fvtable-verify=preinit:vtv_end_preinit.o%s;
fvtable-verify=std:vtv_end.o%s} %{static:crtend.o%s;
shared|!no-pie:crtendS.o%s; :crtend.o%s} crtn.o%s
%{fopenacc|fopenmp:crtoffloadend%O%s};:%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}
%{mpc32:crtprec32.o%s} %{mpc64:crtprec64.o%s} %{mpc80:crtprec80.o%s}
%{shared: crtend_so%O%s;: crtend_android%O%s}}
*link:
%{!r:--build-id} %{!static:--eh-frame-hdr}
%{!mandroid|tno-android-ld:%{m16|m32|mx32:;:-m elf_x86_64}
%{m16|m32:-m elf_i386} %{mx32:-m elf32_x86_64}
--hash-style=gnu --as-needed %{shared:-shared} %{!shared: %{!static:
%{rdynamic:-export-dynamic} %{m16|m32:-dynamic-linker
%{muclibc:/lib/ld-uClibc.so.0;:%{mbionic:/system/bin/linker;:%{mmusl:/lib/ld-musl-i386.so.1;:/lib/ld-linux.so.2}}}}
%{m16|m32|mx32:;:-dynamic-linker
%{muclibc:/lib/ld64-uClibc.so.0;:%{mbionic:/system/bin/linker64;:%{mmusl:/lib/ld-musl-x86_64.so.1;:/lib64/ld-linux-x86-64.so.2}}}}
%{mx32:-dynamic-linker
%{muclibc:/lib/ldx32-uClibc.so.0;:%{mbionic:/system/bin/linkerx32;:%{mmusl:/lib/ld-musl-x32.so.1;:/libx32/ld-linux-x32.so.2}}}}}
%{static:-static}};:%{m16|m32|mx32:;:-m elf_x86_64}
%{m16|m32:-m elf_i386} %{mx32:-m elf32_x86_64}
--hash-style=gnu --as-needed %{shared:-shared} %{!shared: %{!static:
%{rdynamic:-export-dynamic} %{m16|m32:-dynamic-linker
%{muclibc:/lib/ld-uClibc.so.0;:%{mbionic:/system/bin/linker;:%{mmusl:/lib/ld-musl-i386.so.1;:/lib/ld-linux.so.2}}}}
%{m16|m32|mx32:;:-dynamic-linker
%{muclibc:/lib/ld64-uClibc.so.0;:%{mbionic:/system/bin/linker64;:%{mmusl:/lib/ld-musl-x86_64.so.1;:/lib64/ld-linux-x86-64.so.2}}}}
%{mx32:-dynamic-linker
%{muclibc:/lib/ldx32-uClibc.so.0;:%{mbionic:/system/bin/linkerx32;:%{mmusl:/lib/ld-musl-x32.so.1;:/libx32/ld-linux-x32.so.2}}}}}
%{static:-static}} %{shared: -Bsymbolic}}
*lib:
%{!mandroid|tno-android-ld:%{pthread:-lpthread} %{shared:-lc}
%{!shared:%{profile:-lc_p}%{!profile:-lc}};:%{shared:-lc}
%{!shared:%{profile:-lc_p}%{!profile:-lc}} %{!static: -ldl}}
*link_gomp:
*libgcc:
%{static|static-libgcc:-lgcc
-lgcc_eh}%{!static:%{!static-libgcc:%{!shared-libgcc:-lgcc --push-state
--as-needed -lgcc_s --pop-state}%{shared-libgcc:-lgcc_s%{!shared: -lgcc}}}}
*startfile:
%{!mandroid|tno-android-ld:%{shared:; pg|p|profile:gcrt1.o%s;
static:crt1.o%s; !no-pie:Scrt1.o%s; :crt1.o%s} crti.o%s
%{static:crtbeginT.o%s; shared|!no-pie:crtbeginS.o%s; :crtbegin.o%s}
%{fvtable-verify=none:%s; fvtable-verify=preinit:vtv_start_preinit.o%s;
fvtable-verify=std:vtv_start.o%s}
%{fopenacc|fopenmp:crtoffloadbegin%O%s};:%{shared: crtbegin_so%O%s;: %{static:
crtbegin_static%O%s;: crtbegin_dynamic%O%s}}}
*cross_compile:
0
*version:
7.4.0
*multilib:
. !m32 !m64 !mx32;32:../lib32:i386-linux-gnu m32 !m64
!mx32;64:../lib:x86_64-linux-gnu !m32 m64
!mx32;x32:../libx32:x86_64-linux-gnux32 !m32 !m64 mx32;
*multilib_defaults:
m64
*multilib_extra:
*multilib_matches:
m32 m32;m64 m64;mx32 mx32;
*multilib_exclusions:
*multilib_options:
m32/m64/mx32
*multilib_reuse:
*linker:
collect2
*linker_plugin_file:
*lto_wrapper:
*lto_gcc:
*post_link:
*link_libgcc:
%D
*md_exec_prefix:
*md_startfile_prefix:
*md_startfile_prefix_1:
*startfile_prefix_spec:
*sysroot_spec:
--sysroot=%R
*sysroot_suffix_spec:
*sysroot_hdrs_suffix_spec:
*self_spec:
*cc1_cpu:
%{march=native:%>march=native %:local_cpu_detect(arch)
%{!mtune=*:%>mtune=native %:local_cpu_detect(tune)}}
%{mtune=native:%>mtune=native %:local_cpu_detect(tune)}
*link_command:
%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S: %(linker)
%{!fno-use-linker-plugin:%{!fno-lto: -plugin %(linker_plugin_file)
-plugin-opt=%(lto_wrapper) -plugin-opt=-fresolution=%u.res
%{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}}
}}%{flto|flto=*:%<fcompare-debug*} %{flto} %{fno-lto} %{flto=*} %l
%{static|shared|r:;!no-pie:-pie -z now} %{fuse-ld=*:-fuse-ld=%*}
%{gz|gz=zlib:--compress-debug-sections=zlib}
%{gz=none:--compress-debug-sections=none}
%{gz=zlib-gnu:--compress-debug-sections=zlib-gnu} -z relro %X %{o*} %{e*} %{N}
%{n} %{r} %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}
%{static|no-pie:} %{L*} %(mfwrap) %(link_libgcc) %{fvtable-verify=none:}
%{fvtable-verify=std: %e-fvtable-verify=std is not supported in this
configuration} %{fvtable-verify=preinit: %e-fvtable-verify=preinit is not
supported in this configuration}
%{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):%{!shared:libasan_preinit%O%s}
%{static-libasan:%{!shared:-Bstatic --whole-archive -lasan --no-whole-archive
-Bdynamic}}%{!static-libasan:%{!fuse-ld=gold:--push-state} --no-as-needed
-lasan %{fuse-ld=gold:--as-needed;:--pop-state}}}
%{%:sanitize(thread):%{static-libtsan:%{!shared:-Bstatic --whole-archive -ltsan
--no-whole-archive -Bdynamic}}%{!static-libtsan:%{!fuse-ld=gold:--push-state}
--no-as-needed -ltsan %{fuse-ld=gold:--as-needed;:--pop-state}}}
%{%:sanitize(leak):%{static-liblsan:%{!shared:-Bstatic --whole-archive -llsan
--no-whole-archive -Bdynamic}}%{!static-liblsan:%{!fuse-ld=gold:--push-state}
--no-as-needed -llsan %{fuse-ld=gold:--as-needed;:--pop-state}}}}} %o
%{!nostdlib:%{!nodefaultlibs:%{mmpx:%{fcheck-pointer-bounds:
%{static:--whole-archive -lmpx --no-whole-archive
%:include(libmpx.spec)%(link_libmpx)} %{!static:%{static-libmpx:-Bstatic
--whole-archive} %{!static-libmpx:--push-state --no-as-needed} -lmpx
%{!static-libmpx:--pop-state} %{static-libmpx:--no-whole-archive -Bdynamic
%:include(libmpx.spec)%(link_libmpx)}}}}%{mmpx:%{fcheck-pointer-bounds:%{!fno-chkp-use-wrappers:
%{static:-lmpxwrappers} %{!static:%{static-libmpxwrappers:-Bstatic}
-lmpxwrappers %{static-libmpxwrappers: -Bdynamic}}}}}}}
%{mmpx:%{fcheck-pointer-bounds:%{!static:%{m16|m32|mx32:;:-z bndplt }}}}
%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):
%:include(libgomp.spec)%(link_gomp)}
%{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}
%{fgnu-tm:%:include(libitm.spec)%(link_itm)} %(mflib) %{fsplit-stack:
--wrap=pthread_create} %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}
%{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):
%{static-libasan|static:%:include(libsanitizer.spec)%(link_libasan)}
%{static:%ecannot specify -static with -fsanitize=address}}
%{%:sanitize(thread):
%{static-libtsan|static:%:include(libsanitizer.spec)%(link_libtsan)}
%{static:%ecannot specify -static with -fsanitize=thread}}
%{%:sanitize(undefined):%{static-libubsan:-Bstatic}
%{!static-libubsan:--push-state --no-as-needed} -lubsan
%{static-libubsan:-Bdynamic} %{!static-libubsan:--pop-state}
%{static-libubsan|static:%:include(libsanitizer.spec)%(link_libubsan)}}
%{%:sanitize(leak):
%{static-liblsan|static:%:include(libsanitizer.spec)%(link_liblsan)}}}}
%{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}
%{!nostdlib:%{!nostartfiles:%E}} %{T*}
%(post_link) }}}}}}
</pre>
As you can see above, you have configured the
*link_command spec with a bug:
'!no-pie:-pie'
Obviously, specifying '-fpic' on the command line and not '-pie' is
somehow not enough to trigger 'no-pie' - it should be!
** Affects: gcc-7 (Ubuntu)
Importance: Undecided
Status: New
--
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https://bugs.launchpad.net/bugs/1837881
Title:
error in gcc / g++ specs : '-pie' always added
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