Posting for future reference, a solution I found was to install g++-multilib. I had the same incompatible problem relating to -lstdc++ on g++ version 4.6.1 On further probing: g++-multilib is a dummy package which installed g++4.6-multilib which in turn installed the appropriate libstdc++.so under the /usr/lib/gcc/x86_64-linux-gnu/4.6/32 folder.
Answering my own question because I just earned a Tumbleweed badge for it… and I found out subsequently But I was wondering whether there is perhaps a finer-grained control over this, like overwriting -Bsymbolic for individual function definitions of a library. Yes, there is the option –dynamic-list which does exactly that Should I be aware … Read more
ar In Linux, ar is the GNU general purpose archiver. (There are non-GNU variants of ar in other Unix-like OSes). With the option c ar c… archive-name file… It creates an archive containing copies of file…. The archive-name conventionally but not necessarily has the extension .a (for archive). Each file… may be any kind of … Read more
Here is a demo, for GNU ld, of the difference between -L and -rpath-link – and for good measure, the difference between -rpath-link and -rpath. foo.c #include <stdio.h> void foo(void) { puts(__func__); } bar.c #include <stdio.h> void bar(void) { puts(__func__); } foobar.c extern void foo(void); extern void bar(void); void foobar(void) { foo(); bar(); } main.c … Read more
I did some investigation and although I could not find a satisfying solution to the problem, I did find a half-solution. The problem of static builds boils down to 3 things: Building and linking the project’s internal libraries. Pretty simple, one just has to flip the BUILD_SHARED_LIBS switch OFF. Finding static versions of external libraries. … Read more
Try this approach: Compile the code for which you want to generate the coverage with these options: CFLAGS: -fprofile-arcs -ftest-coverage LFLAGS: -lgcov –coverage If this doesn’t solve the problem, then please provide some information on the structure of your application, i.e. whether its single program or an application involving shared/static libraries etc.
GNU ld can do that on ELF platforms. Here is how to do it with a linker version script: /* foo.c */ int foo() { return 42; } int bar() { return foo() + 1; } int baz() { return bar() – 1; } gcc -fPIC -shared -o libfoo.so foo.c && nm -D libfoo.so | … Read more
Afaik LD keeps the symbols in the section even if symbols are not referenced. (–gc-sections). Usually used for sections that have some special meaning in the binary startup process, more or less to mark the roots of the dependency tree. (For Sabuncu below) Dependency tree: If you eliminate unused code, you analyze the code and … Read more