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which contain the required symbols are not passed to the linker.

Therefore, I propose the following fix: add the following line to
Clp/src/Makefile.am:

   libClp_la_LIBADD = $(CLPLIB_DEPENDENCIES)

(right after the libClp_la_LDFLAGS line)

I'm not sure this is the best way to go, but it seems to fix the issue:

$ ldd -d libClp.so
	linux-vdso.so.1 =>  (0x00007ffffa9ff000)
	libCoinUtils.so.3 => /usr/lib/libCoinUtils.so.3 (0x00007fe273cdf000)
	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fe2739ae000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fe2736b4000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fe2732f7000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fe2730e0000)
	/lib64/ld-linux-x86-64.so.2 (0x00007fe274377000)

best regards
Carlo Baldassi