ccache/ccache-2.4-md.patch

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diff -rup ccache-2.4.orig/ccache.c ccache-2.4/ccache.c
--- ccache-2.4.orig/ccache.c Mon Sep 13 11:38:30 2004
+++ ccache-2.4/ccache.c Thu Jun 21 22:17:32 2007
@@ -627,6 +627,13 @@ static void process_args(int argc, char
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);
@@ -702,6 +709,18 @@ static void process_args(int argc, char
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;
+ }
+
/* options that take an argument */
{
const char *opts[] = {"-I", "-include", "-imacros", "-iprefix",
@@ -812,6 +831,41 @@ static void process_args(int argc, char
}
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) {
+ 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 */