CODEWITHSUNDEEP
g++
Jeff
Jeff

Reputation: 87

linker error using static linking in g++

I am using other people's makefile and get troubles when trying to compile a 'static' version of the exe

I have printed out the makefile's rules and the error is like this:

g++ Main.or System.or Options.or -Wall -lz --static -o main
/usr/bin/ld: cannot find -lz
/usr/bin/ld: cannot find -lstdc++
/usr/bin/ld: cannot find -lm
/usr/bin/ld: cannot find -lc
collect2: error: ld returned 1 exit status

If I do not include the '--static' option in the above command, it works fine.

The makefile also have rules to generate the static lib:

ar -rcsv lib_release.a  Main.or System.or Options.or
r - Main.or
r - System.or
r - Options.or
Making Soft Link: lib_release.a -> lib.a
ln -sf lib_release.a lib.a

Upvotes: 1

Views: 1253

Answers (1)

Mike Kinghan
Mike Kinghan

Reputation: 61590

The -static linkage option instructs the linker to ignore all shared libaries (libname.so) that could resolve the -lname linkage options (both explicit and default) and accept only static libraries (libname.a). You have shared libraries installed on your system that satisfy -lz, -lstdc++, -lm and -lc but no static ones.

For your linkage to work as it stands you must install the static libraries:

  • libz.a (Compression library)
  • libstdc++.a (The standard C++ library)
  • libm.a (The math library)
  • libc.a The standard C library

by the method that is appropriate to your distro.

Upvotes: 1

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