diff --git a/lld/ELF/Config.h b/lld/ELF/Config.h index 847fb81559b3..465fea2303d7 100644 --- a/lld/ELF/Config.h +++ b/lld/ELF/Config.h @@ -67,6 +67,7 @@ struct Configuration { bool Mips64EL = false; bool NoInhibitExec; bool NoUndefined; + bool Nostdlib; bool PrintGcSections; bool Relocatable; bool Shared; diff --git a/lld/ELF/Driver.cpp b/lld/ELF/Driver.cpp index e476d5d91140..78ce191d68c0 100644 --- a/lld/ELF/Driver.cpp +++ b/lld/ELF/Driver.cpp @@ -207,9 +207,6 @@ void LinkerDriver::main(ArrayRef ArgsArr) { // Initializes Config members by the command line options. void LinkerDriver::readConfigs(opt::InputArgList &Args) { - for (auto *Arg : Args.filtered(OPT_L)) - Config->SearchPaths.push_back(Arg->getValue()); - std::vector RPaths; for (auto *Arg : Args.filtered(OPT_rpath)) RPaths.push_back(Arg->getValue()); @@ -237,6 +234,7 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) { Config->ICF = Args.hasArg(OPT_icf); Config->NoInhibitExec = Args.hasArg(OPT_noinhibit_exec); Config->NoUndefined = Args.hasArg(OPT_no_undefined); + Config->Nostdlib = Args.hasArg(OPT_nostdlib); Config->PrintGcSections = Args.hasArg(OPT_print_gc_sections); Config->Relocatable = Args.hasArg(OPT_relocatable); Config->Shared = Args.hasArg(OPT_shared); @@ -279,6 +277,14 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) { for (auto *Arg : Args.filtered(OPT_undefined)) Config->Undefined.push_back(Arg->getValue()); + + if (!Config->Nostdlib) { + Config->SearchPaths.push_back("=/lib"); + Config->SearchPaths.push_back("=/usr/lib"); + } + + for (auto *Arg : Args.filtered(OPT_L)) + Config->SearchPaths.push_back(Arg->getValue()); } void LinkerDriver::createFiles(opt::InputArgList &Args) { diff --git a/lld/ELF/LinkerScript.cpp b/lld/ELF/LinkerScript.cpp index b4580b5fe7c6..f9ab4dbf1ca9 100644 --- a/lld/ELF/LinkerScript.cpp +++ b/lld/ELF/LinkerScript.cpp @@ -396,7 +396,9 @@ void ScriptParser::readOutputFormat() { void ScriptParser::readSearchDir() { expect("("); - Config->SearchPaths.push_back(next()); + StringRef Path = next(); + if (!Config->Nostdlib) + Config->SearchPaths.push_back(Path); expect(")"); } diff --git a/lld/ELF/Options.td b/lld/ELF/Options.td index 99a208080a16..46a81f0f0349 100644 --- a/lld/ELF/Options.td +++ b/lld/ELF/Options.td @@ -91,6 +91,9 @@ def noinhibit_exec : Flag<["--"], "noinhibit-exec">, def no_undefined : Flag<["--"], "no-undefined">, HelpText<"Report unresolved symbols even if the linker is creating a shared library">; +def nostdlib: Flag<["-", "--"], "nostdlib">, + HelpText<"Only search directories specified on the command line">; + def o : JoinedOrSeparate<["-"], "o">, MetaVarName<"">, HelpText<"Path to file to write output">; diff --git a/lld/test/ELF/Inputs/nostdlib.s b/lld/test/ELF/Inputs/nostdlib.s new file mode 100644 index 000000000000..db41c9ccd41c --- /dev/null +++ b/lld/test/ELF/Inputs/nostdlib.s @@ -0,0 +1,3 @@ +.globl foo +foo: + ret diff --git a/lld/test/ELF/nostdlib.s b/lld/test/ELF/nostdlib.s new file mode 100644 index 000000000000..f2c45dad0b9b --- /dev/null +++ b/lld/test/ELF/nostdlib.s @@ -0,0 +1,16 @@ +# REQUIRES: x86 + +# RUN: mkdir -p %t.dir/lib +# RUN: mkdir -p %t.dir/usr/lib +# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o +# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/nostdlib.s -o %t2.o +# RUN: ld.lld -shared -o %t.dir/lib/libfoo.so %t2.o +# RUN: ld.lld -shared -o %t.dir/usr/lib/libbar.so %t2.o +# RUN: ld.lld --sysroot=%t.dir -o %t %t1.o -lfoo +# RUN: ld.lld --sysroot=%t.dir -o %t %t1.o -lbar +# RUN: not ld.lld --sysroot=%t.dir -nostdlib -o %t %t1.o -lfoo +# RUN: not ld.lld --sysroot=%t.dir -nostdlib -o %t %t1.o -lbar + +.globl _start +_start: + ret