Ooops... On my ubuntu partition, on another hand, although it too is a recent upgrade, the lack of build-essential doesn't seem to be the problem, neither does a lack of libc.so or libm.so.

What is going wrong on that partition looks like:
root@lapcritter:/usr/lib/puredata/doc/6.externs# make pd_linux
cc -DPD -O2 -funroll-loops -fomit-frame-pointer -Wall -W -Wshadow -Wstrict-prototypes -Werror -Wno-unused -Wno-parentheses -Wno-switch -I../../src -fPIC -o obj1.o -c obj1.c
obj1.c: In function ‘obj1_float’:
obj1.c:15:25: error: unused parameter ‘x’ [-Werror=unused-parameter]
 void obj1_float(t_obj1 *x, t_floatarg f)
                         ^
obj1.c: In function ‘obj1_rats’:
obj1.c:21:24: error: unused parameter ‘x’ [-Werror=unused-parameter]
 void obj1_rats(t_obj1 *x)
                        ^
cc1: all warnings being treated as errors
makefile:58: recipe for target 'obj1.l_ia64' failed
make: *** [obj1.l_ia64] Error 1

(?)

On Fri, May 29, 2015 at 10:06 PM, Forrest Curo <treegestalt@gmail.com> wrote:

Thanks, guys!

That was a bitch! (In an orgy of misplaced persistence I'd manually installed csound6 before there'd been a debian package for it -- and thereby fried my audio on that partition until this morning. Then I'd been able to upgrade out of it -- but that still left things messed up; I couldn't install build-essential except by running aptitude & rejecting its first option ("Don't install 'build-essential' at all")

but its next option worked, whee!)

On Fri, May 29, 2015 at 7:48 PM, Martin Peach <chakekatzil@gmail.com> wrote:

Maybe try
apt-get install build-essential

That usually sets everything up so it (compiling c and c++ code via makefiles) just works.

Martin

On Fri, May 29, 2015 at 7:03 PM, Forrest Curo <treegestalt@gmail.com> wrote:

Okay, this is a debian 7.something with the packaging manually fnurgled, fixed (I hope) with 'apt-get upgrade' this morning -- and usr/lib contains both '386-linux-gnu' and 'x86_64-linux-gnu' -- But neither of these contain a file named 'libc.so' or 'libm.so'.

Tried 'apt-get install libc.so; and 'apt-get install libm.so'

 [I think the latter gave me a bunch of irrelevant stuff!]

and the result is still:
make pd_linux
gcc -DPD -O2 -funroll-loops -fomit-frame-pointer -Wall -W -Wshadow -Wstrict-prototypes -Werror -Wno-unused -Wno-parentheses -Wno-switch -I../../src -fPIC -o obj1.o -c obj1.c
ld -shared -o obj1.pd_linux obj1.o -lc -lm
ld: cannot find -lc
ld: cannot find -lm
make: *** [obj1.pd_linux] Error 1

?

On Fri, May 29, 2015 at 11:11 AM, IOhannes m zmölnig <zmoelnig@iem.at> wrote:

On 05/29/2015 05:40 PM, Charles Z Henry wrote:
> You should have a
> /usr/lib/libc.so
> or /usr/lib64/libc.so
>
> and
> /usr/lib/libm.so
> or /usr/lib64/libm.so


as the OP indicated that they are using "apt-get", it seems they are on
Debian (or a derivative).
Debian does not use /usr/lib64/ but has another multi-arch naming scheme
that is more generic and supports more than a single architecture.

you should have:

/usr/lib/${HOST_TRIPLET}/libc.so
/usr/lib/${HOST_TRIPLET}/libm.so

where ${HOST_TRIPLET} is something like "x86_64-linux-gnu" (on a 64bit
system) or "i386-linux-gnu" (on 32bit)

gfasmrd
IOhannes

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