/*
something went badly wrong - just execute the real compiler
*/
static void failed(void)
{
char *e;
/* delete intermediate pre-processor file if needed */
if (i_tmpfile) {
if (!direct_i_file) {
unlink(i_tmpfile);
}
free(i_tmpfile);
i_tmpfile = NULL;
}
/* delete the cpp stderr file if necessary */
if (cpp_stderr) {
unlink(cpp_stderr);
free(cpp_stderr);
cpp_stderr = NULL;
}
/* strip any local args */
args_strip(orig_args, "--ccache-");
if ((e=getenv("CCACHE_PREFIX"))) {
char *p = find_executable(e, MYNAME);
if (!p) {
perror(e);
exit(1);
}
args_add_prefix(orig_args, p);
}
execv(orig_args->argv[0], orig_args->argv);
cc_log("execv returned (%s)!\n", strerror(errno));
perror(orig_args->argv[0]);
exit(1);
}
/*
process the compiler options to form the correct set of options
for obtaining the preprocessor output
*/
static void process_args(int argc, char **argv)
{
int i;
int found_c_opt = 0;
int found_S_opt = 0;
struct stat st;
char *e;
/* is gcc being asked to output dependencies? */
int generating_dependencies = 0;
/* is the dependency makefile name overridden with -MF? */
int dependency_filename_specified = 0;
/* is the dependency makefile target name specified with -MQ or -MF? */
int dependency_target_specified = 0;
stripped_args = args_init(0, NULL);
args_add(stripped_args, argv[0]);
/* -c not required for SWIG */
if (swig) {
found_c_opt = 1;
}
for (i=1; i<argc; i++) {
/* some options will never work ... */
if (strcmp(argv[i], "-E") == 0) {
failed();
}
/* these are too hard */
if (strcmp(argv[i], "-fbranch-probabilities")==0 ||
strcmp(argv[i], "-fprofile-arcs") == 0 ||
strcmp(argv[i], "-ftest-coverage") == 0 ||
strcmp(argv[i], "--coverage") == 0 ||
strcmp(argv[i], "-M") == 0 ||
strcmp(argv[i], "-MM") == 0 ||
strcmp(argv[i], "-x") == 0) {
cc_log("argument %s is unsupported\n", argv[i]);
stats_update(STATS_UNSUPPORTED);
failed();
continue;
}
/* we must have -c */
if (strcmp(argv[i], "-c") == 0) {
if (!strip_c_option) {
args_add(stripped_args, argv[i]);
}
found_c_opt = 1;
continue;
}
/* -S changes the default extension */
if (strcmp(argv[i], "-S") == 0) {
args_add(stripped_args, argv[i]);
found_S_opt = 1;
continue;
}
/* we need to work out where the output was meant to go */
if (strcmp(argv[i], "-o") == 0) {
if (i == argc-1) {
cc_log("missing argument to %s\n", argv[i]);
stats_update(STATS_ARGS);
failed();
}
output_file = argv[i+1];
i++;
continue;
}
/* alternate form of -o, with no space */
if (!swig) { /* some of SWIG's arguments begin with -o */
if (strncmp(argv[i], "-o", 2) == 0) {
output_file = &argv[i][2];
continue;
}
}
/* debugging is handled specially, so that we know if we
can strip line number info
*/
if (strncmp(argv[i], "-g", 2) == 0) {
args_add(stripped_args, argv[i]);
if (strcmp(argv[i], "-g0") != 0) {
enable_unify = 0;
}
continue;
}
/* The user knows best: just swallow the next arg */
if (strcmp(argv[i], "--ccache-skip") == 0) {
i++;
if (i == argc) {
failed();
}
args_add(stripped_args, argv[i]);
continue;
}
/* These options require special handling, because they
behave differently with gcc -E, when the output
file is not specified. */
if (strcmp(argv[i], "-MD") == 0 || strcmp(argv[i], "-MMD") == 0) {
generating_dependencies = 1;
} else if (strcmp(argv[i], "-MF") == 0) {
dependency_filename_specified = 1;
} else if (strcmp(argv[i], "-MQ") == 0 || strcmp(argv[i], "-MT") == 0) {
dependency_target_specified = 1;
}
/* the input file is already preprocessed */
if (swig && strcmp(argv[i], "-nopreprocess") == 0) {
direct_i_file = 1;
continue;
}
/* options that take an argument */
{
const char *opts[] = {"-I", "-include", "-imacros", "-iprefix",
"-iwithprefix", "-iwithprefixbefore",
"-L", "-D", "-U", "-x", "-MF",
"-MT", "-MQ", "-isystem", "-aux-info",
"--param", "-A", "-Xlinker", "-u",
"-idirafter",
NULL};
int j;
for (j=0;opts[j];j++) {
if (strcmp(argv[i], opts[j]) == 0) {
if (i == argc-1) {
cc_log("missing argument to %s\n",
argv[i]);
stats_update(STATS_ARGS);
failed();
}
args_add(stripped_args, argv[i]);
args_add(stripped_args, argv[i+1]);
i++;
break;
}
}
if (opts[j]) continue;
}
/* other options */
if (argv[i][0] == '-') {
args_add(stripped_args, argv[i]);
continue;
}
/* if an argument isn't a plain file then assume its
an option, not an input file. This allows us to
cope better with unusual compiler options */
if (stat(argv[i], &st) != 0 || !S_ISREG(st.st_mode)) {
args_add(stripped_args, argv[i]);
continue;
}
if (input_file) {
if (check_extension(argv[i], NULL)) {
cc_log("multiple input files (%s and %s)\n",
input_file, argv[i]);
stats_update(STATS_MULTIPLE);
} else if (!found_c_opt) {
cc_log("called for link with %s\n", argv[i]);
if (strstr(argv[i], "conftest.")) {
stats_update(STATS_CONFTEST);
} else {
stats_update(STATS_LINK);
}
} else {
cc_log("non C/C++ file %s\n", argv[i]);
stats_update(STATS_NOTC);
}
failed();
}
input_file = argv[i];
}
if (!input_file) {
cc_log("No input file found\n");
stats_update(STATS_NOINPUT);
failed();
}
if (swig) {
i_extension = check_extension(input_file, NULL);
} else {
i_extension = check_extension(input_file, &direct_i_file);
}
if (i_extension == NULL) {
cc_log("Not a C/C++ file - %s\n", input_file);
stats_update(STATS_NOTC);
failed();
}
if (!found_c_opt) {
cc_log("No -c option found for %s\n", input_file);
/* I find that having a separate statistic for autoconf tests is useful,
as they are the dominant form of "called for link" in many cases */
if (strstr(input_file, "conftest.")) {
stats_update(STATS_CONFTEST);
} else {
stats_update(STATS_LINK);
}
failed();
}
/* don't try to second guess the compilers heuristics for stdout handling */
if (output_file && strcmp(output_file, "-") == 0) {
stats_update(STATS_OUTSTDOUT);
failed();
}
if (!swig && !output_file) {
char *p;
output_file = x_strdup(input_file);
if ((p = strrchr(output_file, '/'))) {
output_file = p+1;
}
p = strrchr(output_file, '.');
if (!p || !p[1]) {
cc_log("badly formed output_file %s\n", output_file);
stats_update(STATS_ARGS);
failed();
}
p[1] = found_S_opt ? 's' : 'o';
p[2] = 0;
}
/* If dependencies are generated, configure the preprocessor */
if (generating_dependencies && output_file) {
if (!dependency_filename_specified) {
char *default_depfile_name = x_strdup(output_file);
char *p = strrchr(default_depfile_name, '.');
if (p) {
if (strlen(p) < 2) {
cc_log("badly formed dependency file %s\n", output_file);
stats_update(STATS_ARGS);
failed();
return;
}
*p = 0;
}
else {
int len = p - default_depfile_name;
p = x_malloc(len + 3);
strncpy(default_depfile_name, p, len - 1);
free(default_depfile_name);
default_depfile_name = p;
}
strcat(default_depfile_name, ".d");
args_add(stripped_args, "-MF");
args_add(stripped_args, default_depfile_name);
}
if (!dependency_target_specified) {
args_add(stripped_args, "-MT");
args_add(stripped_args, output_file);
}
}
/* cope with -o /dev/null */
if (output_file && strcmp(output_file,"/dev/null") != 0 && stat(output_file, &st) == 0 && !S_ISREG(st.st_mode)) {
cc_log("Not a regular file %s\n", output_file);
stats_update(STATS_DEVICE);
failed();
}
if ((e=getenv("CCACHE_PREFIX"))) {
char *p = find_executable(e, MYNAME);
if (!p) {
cc_log("could not find executable (%s)\n", e);
stats_update(STATS_ENVIRONMMENT);
perror(e);
exit(1);
}
args_add_prefix(stripped_args, p);
}
}
/*
process the compiler options to form the correct set of options
for obtaining the preprocessor output
*/
static void process_args(int argc, char **argv)
{
int i;
int found_c_opt = 0;
int found_S_opt = 0;
struct stat st;
char *e;
stripped_args = args_init(0, NULL);
args_add(stripped_args, argv[0]);
for (i=1; i<argc; i++) {
/* some options will never work ... */
if (strcmp(argv[i], "-E") == 0) {
failed();
}
/* these are too hard */
if (strcmp(argv[i], "-fbranch-probabilities")==0 ||
strcmp(argv[i], "-M") == 0 ||
strcmp(argv[i], "-MM") == 0 ||
strcmp(argv[i], "-x") == 0) {
cc_log("argument %s is unsupported\n", argv[i]);
stats_update(STATS_UNSUPPORTED);
failed();
continue;
}
/* we must have -c */
if (strcmp(argv[i], "-c") == 0) {
args_add(stripped_args, argv[i]);
found_c_opt = 1;
continue;
}
/* -S changes the default extension */
if (strcmp(argv[i], "-S") == 0) {
args_add(stripped_args, argv[i]);
found_S_opt = 1;
continue;
}
/* we need to work out where the output was meant to go */
if (strcmp(argv[i], "-o") == 0) {
if (i == argc-1) {
cc_log("missing argument to %s\n", argv[i]);
stats_update(STATS_ARGS);
failed();
}
output_file = argv[i+1];
i++;
continue;
}
/* alternate form of -o, with no space */
if (strncmp(argv[i], "-o", 2) == 0) {
output_file = &argv[i][2];
continue;
}
/* debugging is handled specially, so that we know if we
can strip line number info
*/
if (strncmp(argv[i], "-g", 2) == 0) {
args_add(stripped_args, argv[i]);
if (strcmp(argv[i], "-g0") != 0) {
enable_unify = 0;
}
continue;
}
/* The user knows best: just swallow the next arg */
if (strcmp(argv[i], "--ccache-skip") == 0) {
i++;
if (i == argc) {
failed();
}
args_add(stripped_args, argv[i]);
continue;
}
/* options that take an argument */
{
const char *opts[] = {"-I", "-include", "-imacros", "-iprefix",
"-iwithprefix", "-iwithprefixbefore",
"-L", "-D", "-U", "-x", "-MF",
"-MT", "-MQ", "-isystem", "-aux-info",
"--param", "-A", "-Xlinker", "-u",
"-idirafter",
NULL};
int j;
for (j=0;opts[j];j++) {
if (strcmp(argv[i], opts[j]) == 0) {
if (i == argc-1) {
cc_log("missing argument to %s\n",
argv[i]);
stats_update(STATS_ARGS);
failed();
}
args_add(stripped_args, argv[i]);
args_add(stripped_args, argv[i+1]);
i++;
break;
}
}
if (opts[j]) continue;
}
/* other options */
if (argv[i][0] == '-') {
args_add(stripped_args, argv[i]);
continue;
}
/* if an argument isn't a plain file then assume its
an option, not an input file. This allows us to
cope better with unusual compiler options */
if (stat(argv[i], &st) != 0 || !S_ISREG(st.st_mode)) {
args_add(stripped_args, argv[i]);
continue;
}
if (input_file) {
if (check_extension(argv[i], NULL)) {
cc_log("multiple input files (%s and %s)\n",
input_file, argv[i]);
stats_update(STATS_MULTIPLE);
} else if (!found_c_opt) {
cc_log("called for link with %s\n", argv[i]);
if (strstr(argv[i], "conftest.")) {
stats_update(STATS_CONFTEST);
} else {
stats_update(STATS_LINK);
}
} else {
cc_log("non C/C++ file %s\n", argv[i]);
stats_update(STATS_NOTC);
}
failed();
}
input_file = argv[i];
}
if (!input_file) {
cc_log("No input file found\n");
stats_update(STATS_NOINPUT);
failed();
}
i_extension = check_extension(input_file, &direct_i_file);
if (i_extension == NULL) {
cc_log("Not a C/C++ file - %s\n", input_file);
stats_update(STATS_NOTC);
failed();
}
if (!found_c_opt) {
cc_log("No -c option found for %s\n", input_file);
/* I find that having a separate statistic for autoconf tests is useful,
as they are the dominant form of "called for link" in many cases */
if (strstr(input_file, "conftest.")) {
stats_update(STATS_CONFTEST);
} else {
stats_update(STATS_LINK);
}
failed();
}
/* don't try to second guess the compilers heuristics for stdout handling */
if (output_file && strcmp(output_file, "-") == 0) {
stats_update(STATS_OUTSTDOUT);
failed();
}
if (!output_file) {
char *p;
output_file = x_strdup(input_file);
if ((p = strrchr(output_file, '/'))) {
output_file = p+1;
}
p = strrchr(output_file, '.');
if (!p || !p[1]) {
cc_log("badly formed output_file %s\n", output_file);
stats_update(STATS_ARGS);
failed();
}
p[1] = found_S_opt ? 's' : 'o';
p[2] = 0;
}
/* cope with -o /dev/null */
if (strcmp(output_file,"/dev/null") != 0 && stat(output_file, &st) == 0 && !S_ISREG(st.st_mode)) {
cc_log("Not a regular file %s\n", output_file);
stats_update(STATS_DEVICE);
failed();
}
if ((e=getenv("CCACHE_PREFIX"))) {
char *p = find_executable(e, MYNAME);
if (!p) {
perror(e);
exit(1);
}
args_add_prefix(stripped_args, p);
}
}
/*
something went badly wrong - just execute the real compiler
*/
static void failed(void)
{
char *e;
/* delete intermediate pre-processor file if needed */
if (i_tmpfile) {
if (!direct_i_file) {
unlink(i_tmpfile);
}
free(i_tmpfile);
i_tmpfile = NULL;
}
/* delete the cpp stderr file if necessary */
if (cpp_stderr) {
unlink(cpp_stderr);
free(cpp_stderr);
cpp_stderr = NULL;
}
/* strip any local args */
args_strip(orig_args, "--ccache-");
if ((e=getenv("CCACHE_PREFIX"))) {
char *p = find_executable(e, MYNAME);
if (!p) {
cc_log("could not find executable (%s)\n", e);
perror(e);
exit(1);
}
args_add_prefix(orig_args, p);
}
if (ccache_verbose) {
display_execute_args(orig_args->argv);
}
if (swig) {
putenv("CCACHE_OUTFILES");
}
#ifndef _WIN32
execv(orig_args->argv[0], orig_args->argv);
cc_log("execv returned (%s)!\n", strerror(errno));
perror(orig_args->argv[0]);
exit(1);
#else
/* execv on Windows causes the 'non-regular' testcase to fail, so use Win32 API instead */
{
PROCESS_INFORMATION pinfo;
STARTUPINFO sinfo;
BOOL ret;
DWORD exitcode;
char *args;
ZeroMemory(&pinfo, sizeof(PROCESS_INFORMATION));
ZeroMemory(&sinfo, sizeof(STARTUPINFO));
sinfo.cb = sizeof(STARTUPINFO);
args = argvtos(orig_args->argv);
ret = CreateProcessA(orig_args->argv[0], args, NULL, NULL, TRUE, 0, NULL, NULL,
&sinfo, &pinfo);
if (!ret) {
exitcode = 1;
cc_log("CreateProcessA failed starting %s\n", orig_args->argv[0]);
perror_win32(orig_args->argv[0]);
} else {
WaitForSingleObject(pinfo.hProcess, INFINITE);
GetExitCodeProcess(pinfo.hProcess, &exitcode);
CloseHandle(pinfo.hProcess);
CloseHandle(pinfo.hThread);
}
free(args);
exit(exitcode);
}
#endif
}
