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jeaye / ncurses-rs

A low-level ncurses wrapper for Rust
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undefined reference to `COLORS' #191

Open aplanas opened 4 years ago

aplanas commented 4 years ago

When compiling ncspot from git, I have this linker error at the end:

...
pe" "-lxcb-xfixes" "-lncursesw" "-ltinfo" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
  = note: /usr/lib64/gcc/x86_64-suse-linux/9/../../../../x86_64-suse-linux/bin/ld: /home/aplanas/ncspot/target/release/deps/libncurses-9568030c4c279be4.rlib(ncurses-9568030c4c279be4.ncurses.6tisobd3-cgu.4.rcgu.o): in function `ncurses::constants::COLORS':
          ncurses.6tisobd3-cgu.4:(.text._ZN7ncurses9constants6COLORS17h28f96c61a3832871E+0x3): undefined reference to `COLORS'
          collect2: error: ld returned 1 exit status

I have openSUSE Tumbleweed:

> rpm -qa | grep ncurses
ncurses-devel-6.1-24.1.x86_64
ncurses-utils-6.1-24.1.x86_64
libncurses6-6.1-24.1.x86_64

> rpm -qa | grep terminfo
terminfo-screen-6.1-24.1.x86_64
terminfo-6.1-24.1.x86_64
terminfo-base-6.1-24.1.x86_64
FliegendeWurst commented 4 years ago

Workaround: install libncurses5 and add #[link(name = "ncursesw")] to the extern block in src/ll.rs (done in my fork). Building then requires these env variables:

NCURSES_RS_RUSTC_LINK_LIB=ncursesw::libncursesw.so.5
NCURSES_RS_RUSTC_FLAGS="-L /lib64"
ptesarik commented 3 years ago

I'm not sure the workaround is correct. For me, it failed to link because of conflicts in libtinfo, but I could get a working executable after installing ncurses5-devel and with the following env variable:

export NCURSES_RS_RUSTC_FLAGS="-L /usr/lib64/ncurses5"
eganonoa commented 3 years ago

I'm not sure the workaround is correct. For me, it failed to link because of conflicts in libtinfo, but I could get a working executable after installing ncurses5-devel and with the following env variable:

export NCURSES_RS_RUSTC_FLAGS="-L /usr/lib64/ncurses5"

Thank you!!! This was killing me. I can confirm this worked and fixed the problem I was having building ncspot on OpenSuse Leap 15.2. Because the snap version gives no sound on OpenSuse Leap, this fix was required to get ncspot working.