look for libc at runtime on windows

See #539

before we close the issue we should also detect MSVC 2017
but this gets us started with supporting MSVC 2015

1 files changed, 55 insertions, 0 deletions

diff --git a/src/analyze.cpp b/src/analyze.cpp
index 3bb4fe6511..292943a6e6 100644
--- a/src/analyze.cpp
+++ b/src/analyze.cpp
@@ -3359,6 +3359,61 @@ void find_libc_include_path(CodeGen *g) {
 }
 
 void find_libc_lib_path(CodeGen *g) {
+#ifdef ZIG_OS_WINDOWS
+    if (!g->msvc_lib_dir && g->zig_target.os == ZigLLVM_Win32) {
+        Buf *msvc_lib_dir;
+        if (g->zig_target.arch.arch == ZigLLVM_arm) {
+            msvc_lib_dir = buf_create_from_str("C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\lib\\arm");
+        } else if (g->zig_target.arch.arch == ZigLLVM_x86_64) {
+            msvc_lib_dir = buf_create_from_str("C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\lib\\amd64");
+        } else if (g->zig_target.arch.arch == ZigLLVM_x86) {
+            msvc_lib_dir = buf_create_from_str("C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\lib");
+        } else {
+            zig_panic("unable to determine msvc lib path");
+        }
+        Buf *test_path = buf_alloc();
+        os_path_join(msvc_lib_dir, buf_create_from_str("vcruntime.lib"), test_path);
+        bool result;
+        int err;
+        if ((err = os_file_exists(test_path, &result))) {
+            result = false;
+        }
+        if (result) {
+            g->msvc_lib_dir = msvc_lib_dir;
+        } else {
+            zig_panic("Unable to determine msvc lib path.");
+        }
+    }
+
+    if (!g->kernel32_lib_dir && g->zig_target.os == ZigLLVM_Win32) {
+        Buf *kernel32_lib_dir;
+        if (g->zig_target.arch.arch == ZigLLVM_arm) {
+            kernel32_lib_dir = buf_create_from_str(
+                "C:\\Program Files (x86)\\Windows Kits\\8.1\\Lib\\winv6.3\\um\\arm");
+        } else if (g->zig_target.arch.arch == ZigLLVM_x86_64) {
+            kernel32_lib_dir = buf_create_from_str(
+                "C:\\Program Files (x86)\\Windows Kits\\8.1\\Lib\\winv6.3\\um\\x64");
+        } else if (g->zig_target.arch.arch == ZigLLVM_x86) {
+            kernel32_lib_dir = buf_create_from_str(
+                "C:\\Program Files (x86)\\Windows Kits\\8.1\\Lib\\winv6.3\\um\\x86");
+        } else {
+            zig_panic("unable to determine kernel32 lib path");
+        }
+        Buf *test_path = buf_alloc();
+        os_path_join(kernel32_lib_dir, buf_create_from_str("kernel32.lib"), test_path);
+        bool result;
+        int err;
+        if ((err = os_file_exists(test_path, &result))) {
+            result = false;
+        }
+        if (result) {
+            g->kernel32_lib_dir = kernel32_lib_dir;
+        } else {
+            zig_panic("Unable to determine kernel32 lib path.");
+        }
+    }
+#endif
+
     // later we can handle this better by reporting an error via the normal mechanism
     if (!g->libc_lib_dir || buf_len(g->libc_lib_dir) == 0) {
         zig_panic("Unable to determine libc lib path.");