clang: error: linker command failed with exit code 1

[joefazee]

I am trying to build a simple project with this library and so far no success yet. I think i am doing something.

I built the library with prefix set to --prefix=/usr/local/restclient-cpp.

I copied the sample code from the repo and tried to compile it with the flags below.

g++ -I /usr/local/restclient-cpp/include -std=c++11 main.cpp -o main -v

Below is the output.

`Apple LLVM version 7.3.0 (clang-703.0.31)
Target: x86_64-apple-darwin15.4.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
"/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang" -cc1 -triple x86_64-apple-macosx10.11.0 -Wdeprecated-objc-isa-usage -Werror=deprecated-objc-isa-usage -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name main.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix -mdisable-fp-elim -masm-verbose -munwind-tables -target-cpu core2 -target-linker-version 264.3.102 -v -dwarf-column-info -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/7.3.0 -I /usr/local/restclient-cpp/include -stdlib=libc++ -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /Users/joefazee/Desktop/curl-test -ferror-limit 19 -fmessage-length 203 -stack-protector 1 -fblocks -fobjc-runtime=macosx-10.11.0 -fencode-extended-block-signature -fcxx-exceptions -fexceptions -fmax-type-align=16 -fdiagnostics-show-option -fcolor-diagnostics -o /var/folders/s9/w9447kdn4pd5b44ldn7xmxm80000gp/T/main-8a7637.o -x c++ main.cpp
clang -cc1 version 7.3.0 (clang-703.0.31) default target x86_64-apple-darwin15.4.0
ignoring nonexistent directory "/usr/include/c++/v1"

include "..." search starts here:

include <...> search starts here:

/usr/local/restclient-cpp/include
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1
/usr/local/include
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/7.3.0/include
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include
/usr/include
/System/Library/Frameworks (framework directory)
/Library/Frameworks (framework directory)
End of search list.
"/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld" -demangle -dynamic -arch x86_64 -macosx_version_min 10.11.0 -o main /var/folders/s9/w9447kdn4pd5b44ldn7xmxm80000gp/T/main-8a7637.o -lc++ -lSystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/7.3.0/lib/darwin/libclang_rt.osx.a
Undefined symbols for architecture x86_64:
"RestClient::del(std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator > const&)", referenced from:
_main in main-8a7637.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)`

[mrtazz]

This sounds like you need to also pass -l restclient-cpp to g++ to make it link in the actual library.

[joefazee]

I tried that before posting the issue here.

**$ g++ -I /usr/local/restclient-cpp/include -l restclient-cpp -std=c++11 main.cpp -o main** ld: library not found for -lrestclient-cpp clang: error: linker command failed with exit code 1 (use -v to see invocation)

I ended up compiling with homebrew and it worked.

[mrtazz]

oh ok, glad it worked in the end! Please reopen this or open a new issue if you run into any other problem.