https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78565
Bug ID: 78565
Summary: undefined reference to `aligned_alloc' when building
mingw-w64 cross-compiler
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: gk at torproject dot org
Target Milestone: ---
When testing r242055 to check whether it fixes bug 77459 (which it seems to do)
I ran into another issue. This time I got:
libtool: link: /home/ubuntu/build/gcc/./gcc/xgcc -shared-libgcc
-B/home/ubuntu/build/gcc/./gcc -nostdinc++
-L/home/ubuntu/build/gcc/i686-w64-mingw32/libstdc++-v3/src
-L/home/ubuntu/build/gcc/i686-w64-mingw32/libstdc++-v3/src/.libs
-L/home/ubuntu/build/gcc/i686-w64-mingw32/libstdc++-v3/libsupc++/.libs
-L/home/ubuntu/install/mingw-w64/i686-w64-mingw32/lib
-L/home/ubuntu/install/mingw-w64/mingw/lib -isystem
/home/ubuntu/install/mingw-w64/i686-w64-mingw32/include -isystem
/home/ubuntu/install/mingw-w64/mingw/include
-B/home/ubuntu/install/mingw-w64/i686-w64-mingw32/bin/
-B/home/ubuntu/install/mingw-w64/i686-w64-mingw32/lib/ -isystem
/home/ubuntu/install/mingw-w64/i686-w64-mingw32/include -isystem
/home/ubuntu/install/mingw-w64/i686-w64-mingw32/sys-include -shared
-nostdlib /home/ubuntu/install/mingw-w64/i686-w64-mingw32/lib/dllcrt2.o
/home/ubuntu/build/gcc/./gcc/crtbegin.o .libs/compatibility.o
.libs/compatibility-debug_list.o .libs/compatibility-debug_list-2.o
.libs/compatibility-c++0x.o .libs/compatibility-atomic-c++0x.o
.libs/compatibility-thread-c++0x.o .libs/compatibility-chrono.o
.libs/compatibility-condvar.o -Wl,--whole-archive
../libsupc++/.libs/libsupc++convenience.a
../src/c++98/.libs/libc++98convenience.a
../src/c++11/.libs/libc++11convenience.a -Wl,--no-whole-archive
-L/home/ubuntu/build/gcc/i686-w64-mingw32/libstdc++-v3/libsupc++/.libs
-L/home/ubuntu/build/gcc/i686-w64-mingw32/libstdc++-v3/src
-L/home/ubuntu/build/gcc/i686-w64-mingw32/libstdc++-v3/src/.libs
-L/home/ubuntu/install/mingw-w64/i686-w64-mingw32/lib
-L/home/ubuntu/install/mingw-w64/mingw/lib -L/home/ubuntu/build/gcc/./gcc
-L/home/ubuntu/install/mingw-w64/i686-w64-mingw32/bin -lmingw32 -lgcc_s -lgcc
-lmoldname -lmingwex -lmsvcr100 -ladvapi32 -lshell32 -luser32 -lkernel32
-lmingw32 -lgcc_s -lgcc -lmoldname -lmingwex -lmsvcr100
/home/ubuntu/build/gcc/./gcc/crtend.o -Wl,-O1 -Wl,--gc-sections
-Wl,--version-script=libstdc++-symbols.ver -o .libs/libstdc++-6.dll
-Wl,--enable-auto-image-base -Xlinker --out-implib -Xlinker
.libs/libstdc++.dll.a
../libsupc++/.libs/libsupc++convenience.a(new_opa.o): In function
`ZnwjSt11align_val_t':
/home/ubuntu/build/gcc/i686-w64-mingw32/libstdc++-v3/libsupc++/../../../gcc-test/libstdc++-v3/libsupc++/new_opa.cc:80:
undefined reference to `aligned_alloc'
collect2: error: ld returned 1 exit status
make[5]: *** [libstdc++.la] Error 1
git blame gives me r240187 as the culprit.
