Building with -O0 causes programs/zstd to fail to link #2950
Description
For example, configuring the meson build using
$ meson setup --buildtype=debug builddir/
$ ninja -C builddir/
[50/50] Linking target programs/zstd
FAILED: programs/zstd
cc -o programs/zstd programs/zstd.p/.._.._.._programs_zstdcli.c.o programs/zstd.p/.._.._.._programs_util.c.o programs/zstd.p/.._.._.._programs_timefn.c.o programs/zstd.p/.._.._.._programs_fileio.c.o programs/zstd.p/.._.._.._programs_benchfn.c.o programs/zstd.p/.._.._.._programs_benchzstd.c.o programs/zstd.p/.._.._.._programs_datagen.c.o programs/zstd.p/.._.._.._programs_dibio.c.o programs/zstd.p/.._.._.._programs_zstdcli_trace.c.o programs/zstd.p/.._.._.._lib_common_xxhash.c.o -Wl,--as-needed -Wl,--no-undefined '-Wl,-rpath,$ORIGIN/../lib' -Wl,-rpath-link,/tmp/zstd-1.5.1/build/meson/builddir/lib -Wl,--start-group lib/libzstd.so.1.5.1 /usr/lib/libz.so /usr/lib/liblzma.so /usr/lib/liblz4.so -Wl,--end-group
/usr/bin/ld: programs/zstd.p/.._.._.._programs_dibio.c.o: in function `ERR_getErrorName':
/tmp/zstd-1.5.1/build/meson/builddir/../../../programs/../lib/common/error_private.h:75: undefined reference to `ERR_getErrorString'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
I can reproduce the failure by setting the buildtype=plain, and make the error go away by additionally adding CFLAGS=-O1.
Although presumably zstd may rather suffer for building without any optimizations, undefined symbols seems odd.