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Use llvm::sys::Process::GetEnv() instead of ::getenv(). 

Process::GetEnv() uses GetEnvironmentVariableW, which is a Windows API
to get an environment variable and is preferable over getenv().

llvm-svn: 190431
This commit is contained in:
Rui Ueyama 2013-09-10 20:33:21 +00:00
parent 77d55f8abd
commit 5c532370d5
1 changed files with 9 additions and 6 deletions
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15
lld/lib/Driver/WinLinkDriver.cpp
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@ -13,7 +13,6 @@
///
//===----------------------------------------------------------------------===//
#include <cstdlib>
#include <sstream>
#include <map>
@ -21,11 +20,13 @@
#include "lld/Driver/WinLinkInputGraph.h"
#include "lld/ReaderWriter/PECOFFLinkingContext.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
namespace lld {
@ -67,7 +68,7 @@ public:
};
// Split the given string with spaces.
std::vector<std::string> splitArgList(std::string str) {
std::vector<std::string> splitArgList(const std::string &str) {
std::stringstream stream(str);
std::istream_iterator<std::string> begin(stream);
std::istream_iterator<std::string> end;
@ -146,8 +147,9 @@ std::vector<const char *> processLinkEnv(PECOFFLinkingContext &context,
ret.push_back(argv[0]);
// Add arguments specified by the LINK environment variable.
if (char *envp = ::getenv("LINK"))
for (std::string &arg : splitArgList(envp))
llvm::Optional<std::string> env = llvm::sys::Process::GetEnv("LINK");
if (env.hasValue())
for (std::string &arg : splitArgList(*env))
ret.push_back(context.allocateString(arg).data());
// Add the rest of arguments passed via the command line.
@ -160,8 +162,9 @@ std::vector<const char *> processLinkEnv(PECOFFLinkingContext &context,
// Process "LIB" environment variable. The variable contains a list of search
// paths separated by semicolons.
void processLibEnv(PECOFFLinkingContext &context) {
if (char *envp = ::getenv("LIB"))
for (StringRef path : splitPathList(envp))
llvm::Optional<std::string> env = llvm::sys::Process::GetEnv("LIB");
if (env.hasValue())
for (StringRef path : splitPathList(*env))
context.appendInputSearchPath(context.allocateString(path));
}