/
ldmd.cpp
1171 lines (1094 loc) · 36.6 KB
/
ldmd.cpp
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//===-- ldmd.cpp - Drop-in DMD replacement wrapper for LDC ----------------===//
//
// LDC – the LLVM D compiler
//
// This file is distributed under the BSD-style LDC license, except for the
// command line handling code, which originated from DMD. See the LICENSE
// file for details.
//
//===----------------------------------------------------------------------===//
//
// Wrapper allowing use of LDC as drop-in replacement for DMD.
//
// The reason why full command line parsing is required instead of just
// rewriting the names of a few switches is an annoying impedance mismatch
// between the way how DMD handles arguments and the LLVM command line library:
// DMD allows all switches to be specified multiple times – in case of
// conflicts, the last one takes precedence. There is no easy way to replicate
// this behavior with LLVM, save parsing the switches and re-emitting a cleaned
// up string.
//
// DMD also reads switches from the DFLAGS enviroment variable, if present. This
// is contrary to what C compilers do, where CFLAGS is usually handled by the
// build system. Thus, conflicts like mentioned above occur quite frequently in
// practice in makefiles written for DMD, as DFLAGS is also a natural name for
// handling flags there.
//
// In order to maintain backwards compatibility with earlier versions of LDMD,
// unknown switches are passed through verbatim to LDC. Finding a better
// solution for this is tricky, as some of the LLVM arguments can be
// intentionally specified multiple times to get a certain effect (e.g. pass,
// linker options).
//
// Just as with the old LDMD script, arguments can be passed through unmodified
// to LDC by using -Csomearg.
//
// If maintaining this wrapper is deemed too messy at some point, an alternative
// would be to either extend the LLVM command line library to support the DMD
// semantics (unlikely to happen), or to abandon it altogether (except for
// passing the LLVM-defined flags to the various passes).
//
// Note: This program inherited ugly C-style string handling and memory leaks
// from DMD, but this should not be a problem due to the short-livedness of
// the process.
//
//===----------------------------------------------------------------------===//
#ifndef LDC_EXE_NAME
# error "Please define LDC_EXE_NAME to the name of the LDC executable to use."
#endif
#include "driver/exe_path.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/SystemUtils.h"
#include "llvm/Support/raw_ostream.h"
#if LDC_LLVM_VER >= 304
#if _WIN32
#include "Windows.h"
#else
#include <sys/stat.h>
#endif
#endif
#include <cassert>
#include <cerrno>
#include <climits>
#include <cstdarg>
#include <cstdio>
#include <cstdlib>
#include <numeric>
#include <vector>
#ifdef HAVE_SC_ARG_MAX
# include <unistd.h>
#endif
namespace ls = llvm::sys;
#if LDC_LLVM_VER < 304
namespace llvm {
namespace sys {
namespace fs {
bool can_execute(const Twine &Path) {
return ls::Path(Path.str()).canExecute();
}
error_code createUniqueFile(const Twine &Model, int &ResultFD,
SmallVectorImpl<char> &ResultPath) {
return llvm::sys::fs::unique_file(Model, ResultFD, ResultPath);
}
}
}
}
#endif
// We reuse DMD's response file parsing routine for maximum compatibilty - it
// handles quotes in a very peculiar way.
int response_expand(size_t *pargc, char ***pargv);
void browse(const char *url);
/**
* Prints a formatted error message to stderr and exits the program.
*/
void error(const char* fmt, ...)
{
va_list argp;
va_start(argp, fmt);
fprintf(stderr, "Error: ");
vfprintf(stderr, fmt, argp);
fprintf(stderr, "\n");
exit(EXIT_FAILURE);
va_end(argp);
}
/**
* Prints a formatted warning message to stderr.
*/
void warning(const char* fmt, ...)
{
va_list argp;
va_start(argp, fmt);
fprintf(stderr, "Warning: ");
vfprintf(stderr, fmt, argp);
fprintf(stderr, "\n");
va_end(argp);
}
char* concat(const char* a, const char* b)
{
size_t na = strlen(a);
size_t nb = strlen(b);
char* result = static_cast<char*>(malloc(na + nb + 1));
assert(result);
memcpy(result, a, na);
memcpy(result + na, b, nb + 1);
return result;
}
char* concat(const char* a, int b)
{
char bStr[14];
#if defined(_MSC_VER)
_snprintf_s(bStr, _countof(bStr), sizeof(bStr), "%d", b);
#else
snprintf(bStr, sizeof(bStr), "%d", b);
#endif
return concat(a, bStr);
}
/**
* Runs the given executable, returning its error code.
*/
int execute(const std::string &exePath, const char** args)
{
std::string errorMsg;
#if LDC_LLVM_VER >= 304
int rc = ls::ExecuteAndWait(exePath, args, NULL, NULL,
0, 0, &errorMsg);
#else
int rc = ls::Program::ExecuteAndWait(ls::Path(exePath), args, NULL, NULL,
0, 0, &errorMsg);
#endif
if (!errorMsg.empty())
{
error("Error executing %s: %s", exePath.c_str(), errorMsg.c_str());
}
return rc;
}
/**
* Prints usage information to stdout.
*/
void printUsage(const char* argv0, const std::string &ldcPath)
{
// Print version information by actually invoking ldc -version.
const char* args[] = { ldcPath.c_str(), "-version", NULL };
execute(ldcPath, args);
printf("\n\
Usage:\n\
%s files.d ... { -switch }\n\
\n\
files.d D source files\n\
@cmdfile read arguments from cmdfile\n\
-allinst generate code for all template instantiations\n\
-c do not link\n\
-color[=on|off] force colored console output on or off\n\
-conf=path use config file at path (NOT YET IMPLEMENTED)\n\
-cov do code coverage analysis\n\
-cov=nnn require at least nnn%% code coverage\n\
-D generate documentation\n\
-Dddocdir write documentation file to docdir directory\n\
-Dffilename write documentation file to filename\n\
-d silently allow deprecated features\n\
-dw show use of deprecated features as warnings (default)\n\
-de show use of deprecated features as errors (halt compilation)\n\
-debug compile in debug code\n\
-debug=level compile in debug code <= level\n\
-debug=ident compile in debug code identified by ident\n\
-debuglib=name set symbolic debug library to name\n\
-defaultlib=name set default library to name\n\
-deps=filename write module dependencies to filename\n\
-dip25 implement http://wiki.dlang.org/DIP25 (experimental)\n\
-fPIC generate position independent code\n\
-g add symbolic debug info\n\
-gc add symbolic debug info, pretend to be C\n\
-gs always emit stack frame\n\
-H generate 'header' file\n\
-Hddirectory write 'header' file to directory\n\
-Hffilename write 'header' file to filename\n\
--help print help\n\
-Ipath where to look for imports\n\
-ignore ignore unsupported pragmas\n\
-inline do function inlining\n\
-Jpath where to look for string imports\n\
-Llinkerflag pass linkerflag to link\n\
-lib generate library rather than object files\n\
-m32 generate 32 bit code\n\
-m64 generate 64 bit code\n\
-man open web browser on manual page\n"
#if 0
" -map generate linker .map file\n"
#endif
" -boundscheck=[on|safeonly|off] bounds checks on, in @safe only, or off\n\
-noboundscheck no array bounds checking (deprecated, use -boundscheck=off)\n\
-O optimize\n\
-o- do not write object file\n\
-odobjdir write object & library files to directory objdir\n\
-offilename name output file to filename\n\
-op do not strip paths from source file\n"
#if 0
" -profile profile runtime performance of generated code\n"
#endif
" -property enforce property syntax\n\
-quiet suppress unnecessary messages\n\
-release compile release version\n\
-run srcfile args... run resulting program, passing args\n\
-shared generate shared library\n"
#if 0
" -transition=id show additional info about language change identified by 'id'\n\
-transition=? list all language changes\n"
#endif
" -unittest compile in unit tests\n\
-v verbose\n\
-vcolumns print character (column) numbers in diagnostics\n\
-vdmd print the command used to invoke the underlying compiler\n\
-version=level compile in version code >= level\n\
-version=ident compile in version code identified by ident\n"
#if 0
" -vtls list all variables going into thread local storage\n"
#endif
" -vgc list all gc allocations including hidden ones\n\
-verrors=num limit the number of error messages (0 means unlimited)\n\
-w enable warnings\n\
-wi enable informational warnings\n\
-X generate JSON file\n\
-Xffilename write JSON file to filename\n\n", argv0
);
}
/**
* Parses an enviroment variable for flags and appends them to given list of
* arguments.
*
* This corresponds to getenv_setargv() in DMD, but we need to duplicate it
* here since it is defined in mars.c.
*/
void appendEnvVar(const char* envVarName, std::vector<char*>& args)
{
char *env = getenv(envVarName);
if (!env)
return;
env = strdup(env); // create our own writable copy
size_t j = 1; // leave argv[0] alone
while (1)
{
switch (*env)
{
case ' ':
case '\t':
env++;
break;
case 0:
return;
default:
args.push_back(env); // append
j++;
char* p = env;
int slash = 0;
int instring = 0;
char c = 0;
while (1)
{
c = *env++;
switch (c)
{
case '"':
p -= (slash >> 1);
if (slash & 1)
{ p--;
goto Laddc;
}
instring ^= 1;
slash = 0;
continue;
case ' ':
case '\t':
if (instring)
goto Laddc;
*p = 0;
break;
case '\\':
slash++;
*p++ = c;
continue;
case 0:
*p = 0;
return;
default:
Laddc:
slash = 0;
*p++ = c;
continue;
}
break;
}
}
}
}
struct BoundsCheck
{
enum Type
{
defaultVal,
off,
safeOnly,
on
};
};
struct Color
{
enum Type
{
automatic,
on,
off
};
};
struct Debug
{
enum Type
{
none,
normal,
pretendC
};
};
struct Deprecated
{
enum Type
{
allow,
warn,
error
};
};
struct Model
{
enum Type
{
automatic,
m32,
m64
};
};
struct Warnings
{
enum Type
{
none,
asErrors,
informational
};
};
struct Params
{
bool allinst;
Deprecated::Type useDeprecated;
bool compileOnly;
bool coverage;
bool emitSharedLib;
bool pic;
bool emitMap;
bool multiObj;
Debug::Type debugInfo;
bool alwaysStackFrame;
Model::Type targetModel;
bool profile;
bool verbose;
bool vcolumns;
bool vdmd;
bool vgc;
bool logTlsUse;
unsigned errorLimit;
bool errorLimitSet;
Warnings::Type warnings;
bool optimize;
bool noObj;
char* objDir;
char* objName;
bool preservePaths;
bool generateDocs;
char* docDir;
char* docName;
bool generateHeaders;
char* headerDir;
char* headerName;
bool generateJson;
char* jsonName;
bool ignoreUnsupportedPragmas;
bool enforcePropertySyntax;
bool enableInline;
bool emitStaticLib;
bool quiet;
bool release;
BoundsCheck::Type boundsChecks;
bool emitUnitTests;
std::vector<char*> modulePaths;
std::vector<char*> importPaths;
bool debugFlag;
unsigned debugLevel;
std::vector<char*> debugIdentifiers;
unsigned versionLevel;
std::vector<char*> versionIdentifiers;
std::vector<char*> linkerSwitches;
char* defaultLibName;
char* debugLibName;
char* moduleDepsFile;
Color::Type color;
bool useDIP25;
bool hiddenDebugB;
bool hiddenDebugC;
bool hiddenDebugF;
bool hiddenDebugR;
bool hiddenDebugX;
bool hiddenDebugY;
std::vector<char*> unknownSwitches;
bool run;
std::vector<char*> files;
std::vector<char*> runArgs;
Params()
:
allinst(false),
useDeprecated(Deprecated::warn),
compileOnly(false),
coverage(false),
emitSharedLib(false),
pic(false),
emitMap(false),
multiObj(false),
debugInfo(Debug::none),
alwaysStackFrame(false),
targetModel(Model::automatic),
profile(false),
verbose(false),
vcolumns(false),
vdmd(false),
vgc(false),
logTlsUse(false),
errorLimit(0),
errorLimitSet(false),
warnings(Warnings::none),
optimize(false),
noObj(false),
objDir(0),
objName(0),
preservePaths(false),
generateDocs(false),
docDir(0),
docName(0),
generateHeaders(false),
headerDir(0),
headerName(0),
generateJson(false),
jsonName(0),
ignoreUnsupportedPragmas(false),
enforcePropertySyntax(false),
enableInline(false),
emitStaticLib(false),
quiet(false),
release(false),
boundsChecks(BoundsCheck::defaultVal),
emitUnitTests(false),
debugFlag(false),
debugLevel(0),
versionLevel(0),
defaultLibName(0),
debugLibName(0),
moduleDepsFile(0),
color(Color::automatic),
useDIP25(false),
hiddenDebugB(false),
hiddenDebugC(false),
hiddenDebugF(false),
hiddenDebugR(false),
hiddenDebugX(false),
hiddenDebugY(false),
run(false)
{ }
};
/**
* Parses the flags from the given command line and the DFLAGS environment
* variable into a Params struct.
*/
Params parseArgs(size_t originalArgc, char** originalArgv, const std::string &ldcPath)
{
// Expand any response files present into the list of arguments.
size_t argc = originalArgc;
char** argv = originalArgv;
if (response_expand(&argc, &argv))
{
error("Could not read response file.");
}
std::vector<char*> args(argv, argv + argc);
appendEnvVar("DFLAGS", args);
Params result = Params();
for (size_t i = 1; i < args.size(); i++)
{
char* p = args[i];
if (*p == '-')
{
if (strcmp(p + 1, "allinst") == 0)
result.allinst = true;
else if (strcmp(p + 1, "de") == 0)
result.useDeprecated = Deprecated::error;
else if (strcmp(p + 1, "d") == 0)
result.useDeprecated = Deprecated::allow;
else if (strcmp(p + 1, "dw") == 0)
result.useDeprecated = Deprecated::warn;
else if (strcmp(p + 1, "c") == 0)
result.compileOnly = true;
else if (strncmp(p + 1, "color", 5) == 0)
{
result.color = Color::on;
// Parse:
// -color
// -color=on|off
if (p[6] == '=')
{
if (strcmp(p + 7, "off") == 0)
result.color = Color::off;
else if (strcmp(p + 7, "on") != 0)
goto Lerror;
}
else if (p[6])
goto Lerror;
}
else if (strncmp(p + 1, "conf", 4) == 0)
/* NOT YET IMPLEMENTED */;
else if (strcmp(p + 1, "cov") == 0)
// For "-cov=...", the whole cmdline switch is forwarded to LDC.
// For plain "-cov", the cmdline switch must be explicitly forwarded
// and result.coverage must be set to true to that effect.
result.coverage = (p[4] != '=');
else if (strcmp(p + 1, "dip25") == 0)
result.useDIP25 = true;
else if (strcmp(p + 1, "shared") == 0
// backwards compatibility with old switch
|| strcmp(p + 1, "dylib") == 0
)
result.emitSharedLib = true;
else if (strcmp(p + 1, "fPIC") == 0)
result.pic = true;
else if (strcmp(p + 1, "map") == 0)
result.emitMap = true;
else if (strcmp(p + 1, "multiobj") == 0)
result.multiObj = true;
else if (strcmp(p + 1, "g") == 0)
result.debugInfo = Debug::normal;
else if (strcmp(p + 1, "gc") == 0)
result.debugInfo = Debug::pretendC;
else if (strcmp(p + 1, "gs") == 0)
result.alwaysStackFrame = true;
else if (strcmp(p + 1, "gt") == 0)
error("use -profile instead of -gt\n");
else if (strcmp(p + 1, "m32") == 0)
result.targetModel = Model::m32;
else if (strcmp(p + 1, "m64") == 0)
result.targetModel = Model::m64;
else if (strcmp(p + 1, "profile") == 0)
result.profile = true;
else if (memcmp(p + 1, "transition", 10) == 0)
warning("-transition not yet supported by LDC.");
else if (strcmp(p + 1, "v") == 0)
result.verbose = true;
else if (strcmp(p + 1, "vcolumns") == 0)
result.vcolumns = true;
else if (strcmp(p + 1, "vdmd") == 0)
result.vdmd = true;
else if (strcmp(p + 1, "vgc") == 0)
result.vgc = true;
else if (strcmp(p + 1, "vtls") == 0)
result.logTlsUse = true;
else if (strcmp(p + 1, "v1") == 0)
{
error("use DMD 1.0 series compilers for -v1 switch");
break;
}
else if (memcmp(p + 1, "verrors", 7) == 0)
{
if (p[8] == '=' && isdigit((unsigned char)p[9]))
{
long num;
char* endp;
errno = 0;
num = strtol(p + 9, &endp, 10);
if (*endp || errno || num > INT_MAX)
goto Lerror;
// Bugzilla issue number
result.errorLimit = (unsigned) num;
result.errorLimitSet = true;
}
else
goto Lerror;
}
else if (strcmp(p + 1, "w") == 0)
result.warnings = Warnings::asErrors;
else if (strcmp(p + 1, "wi") == 0)
result.warnings = Warnings::informational;
else if (strcmp(p + 1, "O") == 0)
result.optimize = true;
else if (p[1] == 'o')
{
switch (p[2])
{
case '-':
result.noObj = true;
break;
case 'd':
if (!p[3])
goto Lnoarg;
result.objDir = p + 3;
break;
case 'f':
if (!p[3])
goto Lnoarg;
result.objName = p + 3;
break;
case 'p':
if (p[3])
goto Lerror;
result.preservePaths = 1;
break;
case 0:
error("-o no longer supported, use -of or -od");
break;
default:
goto Lerror;
}
}
else if (p[1] == 'D')
{
result.generateDocs = true;
switch (p[2])
{
case 'd':
if (!p[3])
goto Lnoarg;
result.docDir = p + 3;
break;
case 'f':
if (!p[3])
goto Lnoarg;
result.docName = p + 3;
break;
case 0:
break;
default:
goto Lerror;
}
}
else if (p[1] == 'H')
{
result.generateHeaders = true;
switch (p[2])
{
case 'd':
if (!p[3])
goto Lnoarg;
result.headerDir = p + 3;
break;
case 'f':
if (!p[3])
goto Lnoarg;
result.headerName = p + 3;
break;
case 0:
break;
default:
goto Lerror;
}
}
else if (p[1] == 'X')
{
result.generateJson = true;
switch (p[2])
{
case 'f':
if (!p[3])
goto Lnoarg;
result.jsonName = p + 3;
break;
case 0:
break;
default:
goto Lerror;
}
}
else if (strcmp(p + 1, "ignore") == 0)
result.ignoreUnsupportedPragmas = true;
else if (strcmp(p + 1, "property") == 0)
result.enforcePropertySyntax = true;
else if (strcmp(p + 1, "inline") == 0)
result.enableInline = true;
else if (strcmp(p + 1, "lib") == 0)
result.emitStaticLib = true;
else if (strcmp(p + 1, "quiet") == 0)
result.quiet = 1;
else if (strcmp(p + 1, "release") == 0)
result.release = 1;
else if (strcmp(p + 1, "noboundscheck") == 0)
result.boundsChecks = BoundsCheck::off;
else if (memcmp(p + 1, "boundscheck", 11) == 0)
{
if (p[12] == '=')
{
if (strcmp(p + 13, "on") == 0)
result.boundsChecks = BoundsCheck::on;
else if (strcmp(p + 13, "safeonly") == 0)
result.boundsChecks = BoundsCheck::safeOnly;
else if (strcmp(p + 13, "off") == 0)
result.boundsChecks = BoundsCheck::off;
else
goto Lerror;
}
}
else if (strcmp(p + 1, "unittest") == 0)
result.emitUnitTests = 1;
else if (p[1] == 'I')
result.modulePaths.push_back(p + 2);
else if (p[1] == 'J')
result.importPaths.push_back(p + 2);
else if (memcmp(p + 1, "debug", 5) == 0 && p[6] != 'l')
{
// Parse:
// -debug
// -debug=number
// -debug=identifier
if (p[6] == '=')
{
if (isdigit((unsigned char)p[7]))
{ long level;
errno = 0;
level = strtol(p + 7, &p, 10);
if (*p || errno || level > INT_MAX)
goto Lerror;
result.debugLevel = (int)level;
}
else
result.debugIdentifiers.push_back(p + 7);
}
else if (p[6])
goto Lerror;
else
result.debugFlag = true;
}
else if (memcmp(p + 1, "version", 5) == 0)
{
// Parse:
// -version=number
// -version=identifier
if (p[8] == '=')
{
if (isdigit((unsigned char)p[9]))
{ long level;
errno = 0;
level = strtol(p + 9, &p, 10);
if (*p || errno || level > INT_MAX)
goto Lerror;
result.versionLevel = (int)level;
}
else
result.versionIdentifiers.push_back(p + 9);
}
else
goto Lerror;
}
else if (strcmp(p + 1, "-b") == 0)
result.hiddenDebugB = 1;
else if (strcmp(p + 1, "-c") == 0)
result.hiddenDebugC = 1;
else if (strcmp(p + 1, "-f") == 0)
result.hiddenDebugF = 1;
else if (strcmp(p + 1, "-help") == 0)
{
printUsage(originalArgv[0], ldcPath);
exit(EXIT_SUCCESS);
}
else if (strcmp(p + 1, "-r") == 0)
result.hiddenDebugR = 1;
else if (strcmp(p + 1, "-x") == 0)
result.hiddenDebugX = 1;
else if (strcmp(p + 1, "-y") == 0)
result.hiddenDebugY = 1;
else if (p[1] == 'L')
{
result.linkerSwitches.push_back(p + 2);
}
else if (memcmp(p + 1, "defaultlib=", 11) == 0)
{
result.defaultLibName = p + 1 + 11;
}
else if (memcmp(p + 1, "debuglib=", 9) == 0)
{
result.debugLibName = p + 1 + 9;
}
else if (memcmp(p + 1, "deps=", 5) == 0)
{
result.moduleDepsFile = p + 1 + 5;
if (!result.moduleDepsFile[0])
goto Lnoarg;
}
else if (memcmp(p + 1, "man", 3) == 0)
{
browse("http://wiki.dlang.org/LDC");
exit(EXIT_SUCCESS);
}
else if (strcmp(p + 1, "run") == 0)
{
result.run = true;
int runargCount = ((i >= originalArgc) ? argc : originalArgc) - i - 1;
if (runargCount)
{
result.files.push_back(argv[i + 1]);
result.runArgs = std::vector<char*>(argv + i + 2, argv + i + runargCount + 1);
i += runargCount;
}
else
{
result.run = false;
goto Lnoarg;
}
}
else if (p[1] == 'C')
{
result.unknownSwitches.push_back(concat("-", p + 2));
}
else
{
Lerror:
result.unknownSwitches.push_back(p);
continue;
Lnoarg:
error("argument expected for switch '%s'", p);
continue;
}
}
else
{
// FIXME: #if TARGET_WINDOS
llvm::StringRef ext = ls::path::extension(p);
if (ext.equals_lower("exe"))
{
result.objName = p;
continue;
}
// #endif
result.files.push_back(p);
}
}
if (result.files.empty())
{
printUsage(originalArgv[0], ldcPath);
error("No source file specified.");
}
return result;
}
void pushSwitches(const char* prefix, const std::vector<char*>& vals, std::vector<const char*>& r)
{
typedef std::vector<char*>::const_iterator It;
for (It it = vals.begin(), end = vals.end(); it != end; ++it)
{
r.push_back(concat(prefix, *it));
}
}
/**
* Appends the LDC command line parameters corresponding to the given set of
* parameters to r.
*/
void buildCommandLine(std::vector<const char*>& r, const Params& p)
{
if (p.allinst) r.push_back("-allinst");
if (p.useDeprecated == Deprecated::allow) r.push_back("-d");
if (p.useDeprecated == Deprecated::error) r.push_back("-de");
if (p.compileOnly) r.push_back("-c");
if (p.coverage) r.push_back("-cov");
if (p.emitSharedLib) r.push_back("-shared");
if (p.pic) r.push_back("-relocation-model=pic");
if (p.emitMap) warning("Map file generation not yet supported by LDC.");
if (!p.emitStaticLib && ((!p.multiObj && !p.compileOnly) || p.objName))
r.push_back("-singleobj");
if (p.debugInfo == Debug::normal) r.push_back("-g");
else if (p.debugInfo == Debug::pretendC) r.push_back("-gc");
if (p.alwaysStackFrame) r.push_back("-disable-fp-elim");
if (p.targetModel == Model::m32) r.push_back("-m32");
else if (p.targetModel == Model::m64) r.push_back("-m64");
if (p.profile) warning("CPU profile generation not yet supported by LDC.");
if (p.verbose) r.push_back("-v");
if (p.vcolumns) r.push_back("-vcolumns");
if (p.vgc) r.push_back("-vgc");
if (p.logTlsUse) warning("-vtls not yet supported by LDC.");
if (p.errorLimitSet) r.push_back(concat("-verrors=", p.errorLimit));
if (p.warnings == Warnings::asErrors) r.push_back("-w");
else if (p.warnings == Warnings::informational) r.push_back("-wi");
if (p.optimize) r.push_back("-O3");
if (p.noObj) r.push_back("-o-");
if (p.objDir) r.push_back(concat("-od=", p.objDir));
if (p.objName) r.push_back(concat("-of=", p.objName));
if (p.preservePaths) r.push_back("-op");
if (p.generateDocs) r.push_back("-D");
if (p.docDir) r.push_back(concat("-Dd=", p.docDir));
if (p.docName) r.push_back(concat("-Df=", p.docName));
if (p.generateHeaders) r.push_back("-H");
if (p.headerDir) r.push_back(concat("-Hd=", p.headerDir));
if (p.headerName) r.push_back(concat("-Hf=", p.headerName));
if (p.generateJson) r.push_back("-X");
if (p.jsonName) r.push_back(concat("-Xf=", p.jsonName));
if (p.ignoreUnsupportedPragmas) r.push_back("-ignore");
if (p.enforcePropertySyntax) r.push_back("-property");
if (p.enableInline) {
// -inline also influences .di generation with DMD.
r.push_back("-enable-inlining");
r.push_back("-Hkeep-all-bodies");
}
if (p.emitStaticLib) r.push_back("-lib");
// -quiet is the default in (newer?) frontend versions, just ignore it.
if (p.release) r.push_back("-release"); // Also disables boundscheck.
if (p.boundsChecks == BoundsCheck::on) r.push_back("-boundscheck=on");
if (p.boundsChecks == BoundsCheck::safeOnly) r.push_back("-boundscheck=safeonly");
if (p.boundsChecks == BoundsCheck::off) r.push_back("-boundscheck=off");
if (p.emitUnitTests) r.push_back("-unittest");
pushSwitches("-I=", p.modulePaths, r);
pushSwitches("-J=", p.importPaths, r);
if (p.debugFlag) r.push_back("-d-debug");
if (p.debugLevel) r.push_back(concat("-d-debug=", p.debugLevel));
pushSwitches("-d-debug=", p.debugIdentifiers, r);
if (p.versionLevel) r.push_back(concat("-d-version=", p.versionLevel));