https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81753
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Apparently it's not enough:
g++ -no-pie -O0 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -fno-common
-DHAVE_CONFIG_H -static-libstdc++ -static-libgcc -o cc1 c/c-lang.o
c-family/stub-objc.o attribs.o c/c-errors.o c/c-decl.o c/c-typeck.o
c/c-convert.o c/c-aux-info.o c/c-objc-common.o c/c-parser.o
c/c-array-notation.o c/c-fold.o c/gimple-parser.o c-family/c-common.o
c-family/c-cppbuiltin.o c-family/c-dump.o c-family/c-format.o
c-family/c-gimplify.o c-family/c-indentation.o c-family/c-lex.o
c-family/c-omp.o c-family/c-opts.o c-family/c-pch.o c-family/c-ppoutput.o
c-family/c-pragma.o c-family/c-pretty-print.o c-family/c-semantics.o
c-family/c-ada-spec.o c-family/c-cilkplus.o c-family/array-notation-common.o
c-family/cilk.o c-family/c-ubsan.o c-family/c-attribs.o c-family/c-warn.o
darwin-c.o rs6000-c.o \
cc1-checksum.o libbackend.a main.o libcommon-target.a libcommon.a
../libcpp/libcpp.a ../libdecnumber/libdecnumber.a libcommon.a
../libcpp/libcpp.a ../libbacktrace/.libs/libbacktrace.a
../libiberty/libiberty.a ../libdecnumber/libdecnumber.a -lisl -lmpc -lmpfr
-lgmp -rdynamic -ldl -L./../zlib -lz
g++ -no-pie -O0 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -fno-common
-DHAVE_CONFIG_H -static-libstdc++ -static-libgcc -o cc1plus \
cp/cp-lang.o c-family/stub-objc.o cp/call.o cp/class.o cp/constexpr.o
cp/constraint.o cp/cp-array-notation.o cp/cp-cilkplus.o cp/cp-gimplify.o
cp/cp-objcp-common.o cp/cp-ubsan.o cp/cvt.o cp/cxx-pretty-print.o cp/decl.o
cp/decl2.o cp/dump.o cp/error.o cp/except.o cp/expr.o cp/friend.o cp/init.o
cp/lambda.o cp/lex.o cp/logic.o cp/mangle.o cp/method.o cp/name-lookup.o
cp/optimize.o cp/parser.o cp/pt.o cp/ptree.o cp/repo.o cp/rtti.o cp/search.o
cp/semantics.o cp/tree.o cp/typeck.o cp/typeck2.o cp/vtable-class-hierarchy.o
attribs.o incpath.o c-family/c-common.o c-family/c-cppbuiltin.o
c-family/c-dump.o c-family/c-format.o c-family/c-gimplify.o
c-family/c-indentation.o c-family/c-lex.o c-family/c-omp.o c-family/c-opts.o
c-family/c-pch.o c-family/c-ppoutput.o c-family/c-pragma.o
c-family/c-pretty-print.o c-family/c-semantics.o c-family/c-ada-spec.o
c-family/c-cilkplus.o c-family/array-notation-common.o c-family/cilk.o
c-family/c-ubsan.o c-family/c-attribs.o c-family/c-warn.o darwin-c.o rs6000-c.o
cc1plus-checksum.o libbackend.a main.o libcommon-target.a libcommon.a
../libcpp/libcpp.a ../libdecnumber/libdecnumber.a libcommon.a
../libcpp/libcpp.a ../libbacktrace/.libs/libbacktrace.a
../libiberty/libiberty.a ../libdecnumber/libdecnumber.a -lisl -lmpc -lmpfr
-lgmp -rdynamic -ldl -L./../zlib -lz
passes.o: In function `gcc::pass_manager::pass_manager(gcc::context*)':
passes.c:(.text+0xd709): undefined reference to
`make_pass_analyze_swaps(gcc::context*)'
collect2: error: ld returned 1 exit status
make[1]: *** [../../gcc/c/Make-lang.in:85: cc1] Error 1
passes.o: In function `gcc::pass_manager::pass_manager(gcc::context*)':
passes.c:(.text+0xd709): undefined reference to
`make_pass_analyze_swaps(gcc::context*)'
collect2: error: ld returned 1 exit status
