diff --git a/libtcc.c b/libtcc.c
index 7fc9827..25d004c 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -1941,3 +1941,21 @@ PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time)
            tt, (int)(total_lines / tt),
            total_bytes / tt / 1000000.0);
 }
+
+PUB_FUNC void tcc_set_environment(TCCState *s)
+{
+    char * path;
+    
+    path = getenv("C_INCLUDE_PATH");
+    if(path != NULL) {
+        tcc_add_include_path(s, path);
+    }
+    path = getenv("CPATH");
+    if(path != NULL) {
+        tcc_add_include_path(s, path);
+    }
+    path = getenv("LD_LIBRARY_PATH");
+    if(path != NULL) {
+        tcc_add_library_path(s, path);
+    }
+}
\ No newline at end of file
diff --git a/tcc.c b/tcc.c
index cd306b0..52638ef 100644
--- a/tcc.c
+++ b/tcc.c
@@ -252,6 +252,7 @@ int main(int argc, char **argv)
     s->output_type = TCC_OUTPUT_EXE;
 
     optind = tcc_parse_args(s, argc - 1, argv + 1);
+    tcc_set_environment(s);
 
     if (optind == 0) {
         help();
diff --git a/tcc.h b/tcc.h
index 119f862..e94f91f 100644
--- a/tcc.h
+++ b/tcc.h
@@ -1061,6 +1061,8 @@ ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags);
 PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time);
 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv);
 
+PUB_FUNC void tcc_set_environment(TCCState *s);
+
 /* ------------ tccpp.c ------------ */
 
 ST_DATA struct BufferedFile *file;