1 Apr
2017
1 Apr
'17
12:31 a.m.
I was pleased to see the announcement from David du Colombier
<0intro(a)gmail.com> of a SIMH VAX image for the newly-released 8th
Edition Research Unix, and I had it downloaded and running in short
order.
I compiled and ran the traditional hello-world test in C,
successfully, but the C++ and Fortran companions would not link:
# cat hello.cpp
#include <stream>
int
main(void)
{
cout << "Hello, world...this is C++" << endl;
return (0);
}
# CC hello.cpp
cc hello.cpp -lC
ld:hello.cpp: bad magic number
I also tried extensions .C, .cxx, and .cc, with the same error.
With Fortran, I get
# cat hello.f
print *,'hello ... This is a Fortran 77 program!'
end
# f77 hello.f
hello.f:
MAIN:
Undefined:
__bufendtab
_setvbuf
The missing symbols do not appear to be defined anywhere in /lib or
/usr/lib, suggesting that some V8 libraries have been lost.
David reports privately that he sees the same issues that I see.
Can anyone on this list identify the problem? Normally, Unix
compilers should supply the necessary libraries for
standard-conforming code, and f77 would silently add -lI77 and -lF77.
The C++ compiler issue seems to be quite different: adding the -v
(trace) option shows what it does:
# CC -v hello.cpp
cc -v hello.cpp -lC
+ ld -X /lib/crt0.o hello.cpp -lC -lc
ld:hello.cpp: bad magic number
The source code, rather than the object code, is passed to the loader.
This may have to do with the choice of extension: what did early C++
compilers expect for filenames?
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