2 files changed, 23 insertions, 0 deletions
diff --git a/src/redo.c b/src/redo.c
index 68d401e..b1870db 100644
--- a/src/redo.c
+++ b/src/redo.c
@@ -1,9 +1,31 @@
 #include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
 
 #include "build.h"
 #include "util.h"
+#include "dbg.h"
+
+/* TODO: for some reason this header is not included */
+int setenv(const char *name, const char *value, int overwrite);
 
 int main(int argc, char *argv[]) {
+    /* create .redo directory */
+    if (mkdir(".redo", 0744))
+        fatal(ERRM_MKDIR, ".redo");
+
+    /* set REDO_ROOT */
+    char *cwd = getcwd(NULL, 0);
+    if (!cwd)
+        fatal("redo: failed to obtain cwd");
+
+    if (setenv("REDO_ROOT", cwd, 0))
+        fatal("redo: failed to setenv %s to %s", "REDO_ROOT", cwd);
+
+    free(cwd);
+
     if (argc < 2) {
         build_target("all");
     } else {
diff --git a/src/util.h b/src/util.h
index 789a404..af6aaf3 100644
--- a/src/util.h
+++ b/src/util.h
@@ -21,6 +21,7 @@
 #define ERRM_FORK _PROGNAME": failed to fork() new process"
 #define ERRM_REALPATH _PROGNAME": failed to get realpath() of %s"
 #define ERRM_STAT _PROGNAME": failed to aquire stat() information about %s"
+#define ERRM_MKDIR _PROGNAME": failed to mkdir() %s"
 
 #define safe_malloc(size) safe_malloc_(size, _FILENAME, __LINE__)
 #define safe_realloc(ptr, size) safe_realloc_(ptr, size, _FILENAME, __LINE__)