ability to target any glibc version

1 files changed, 26 insertions, 0 deletions

diff --git a/src/compiler.cpp b/src/compiler.cpp
index 8bfe87bfcd..5d401f1851 100644
--- a/src/compiler.cpp
+++ b/src/compiler.cpp
@@ -9,9 +9,13 @@ static Buf saved_stage1_path = BUF_INIT;
 static Buf saved_lib_dir = BUF_INIT;
 static Buf saved_special_dir = BUF_INIT;
 static Buf saved_std_dir = BUF_INIT;
+
 static Buf saved_dynamic_linker_path = BUF_INIT;
 static bool searched_for_dyn_linker = false;
 
+static Buf saved_libc_path = BUF_INIT;
+static bool searched_for_libc = false;
+
 Buf *get_stage1_cache_path(void) {
     if (saved_stage1_path.list.length != 0) {
         return &saved_stage1_path;
@@ -36,6 +40,28 @@ static void detect_dynamic_linker(Buf *lib_path) {
 #endif
 }
 
+const Buf *get_self_libc_path(void) {
+    for (;;) {
+        if (saved_libc_path.list.length != 0) {
+            return &saved_libc_path;
+        }
+        if (searched_for_libc)
+            return nullptr;
+        ZigList<Buf *> lib_paths = {};
+        Error err;
+        if ((err = os_self_exe_shared_libs(lib_paths)))
+            return nullptr;
+        for (size_t i = 0; i < lib_paths.length; i += 1) {
+            Buf *lib_path = lib_paths.at(i);
+            if (buf_ends_with_str(lib_path, "libc.so.6")) {
+                buf_init_from_buf(&saved_libc_path, lib_path);
+                return &saved_libc_path;
+            }
+        }
+        searched_for_libc = true;
+    }
+}
+
 Buf *get_self_dynamic_linker_path(void) {
     for (;;) {
         if (saved_dynamic_linker_path.list.length != 0) {