Alexey Salmin <alexey.salmin@xxxxxxxxx> writes: > Hello! Today I tried to build latest gcc trunk (rev #158628) and got > the following errors: > > libbackend.a(builtins.o): In function `fold_builtin_ccos': > /home/salmin/gcc-trunk/host-x86_64-unknown-linux-gnu/gcc/../.././gcc/builtins.c:7341: > undefined reference to `mpc_cosh' > /home/salmin/gcc-trunk/host-x86_64-unknown-linux-gnu/gcc/../.././gcc/builtins.c:7341: > undefined reference to `mpc_cos' > libbackend.a(builtins.o): In function `fold_builtin_cexp': > /home/salmin/gcc-trunk/host-x86_64-unknown-linux-gnu/gcc/../.././gcc/builtins.c:7434: > undefined reference to `mpc_exp' > .... > > which is surprising because I have libmpc installed (debian sid): > salmin@salmin:~/gcc-trunk$ dpkg -l libmpc* | grep ^ii | grep -v libmpcdec > ii libmpc-dev 0.8.1-1 > multiple precision complex floating-point library development > package > ii libmpc2 0.8.1-1 > multiple precision complex floating-point library > > configuring with LDFLAGS=-lmpc solved the problem. Is it a bug in > Makefile or something or I'm doing it wrong? This certainly sounds like a bug in the configure script or the Makefile. It may be that since mpc is so new few people have tested building gcc against an installed libmpc. Ian
