From 46ddeb0bafd68cf88867e4268253a41ac0050215 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Mon, 18 Sep 2017 21:06:53 -0400
Subject: [PATCH] add --verbose-link option

only prints the link line
---
 src/all_types.hpp | 1 +
 src/link.cpp      | 9 +++++----
 src/main.cpp      | 5 +++++
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/all_types.hpp b/src/all_types.hpp
index def0f2d26..bf315cd61 100644
--- a/src/all_types.hpp
+++ b/src/all_types.hpp
@@ -1508,6 +1508,7 @@ struct CodeGen {
     size_t version_minor;
     size_t version_patch;
     bool verbose;
+    bool verbose_link;
     ErrColor err_color;
     ImportTableEntry *root_import;
     ImportTableEntry *bootstrap_import;
diff --git a/src/link.cpp b/src/link.cpp
index dae68c281..9a26139e5 100644
--- a/src/link.cpp
+++ b/src/link.cpp
@@ -37,6 +37,7 @@ static Buf *build_o_raw(CodeGen *parent_gen, const char *oname, Buf *full_path)
 
     codegen_set_omit_zigrt(child_gen, true);
     child_gen->want_h_file = false;
+    child_gen->verbose_link = parent_gen->verbose_link;
 
     codegen_set_cache_dir(child_gen, parent_gen->cache_dir);
 
@@ -816,7 +817,7 @@ void codegen_link(CodeGen *g, const char *out_file) {
         fprintf(stderr, "---------------\n");
         LLVMDumpModule(g->module);
     }
-    if (g->verbose) {
+    if (g->verbose || g->verbose_link) {
         fprintf(stderr, "\nLink:\n");
         fprintf(stderr, "-------\n");
     }
@@ -840,7 +841,7 @@ void codegen_link(CodeGen *g, const char *out_file) {
                 zig_panic("unable to rename object file into final output: %s", err_str(err));
             }
         }
-        if (g->verbose) {
+        if (g->verbose || g->verbose_link) {
             fprintf(stderr, "OK\n");
         }
         return;
@@ -860,7 +861,7 @@ void codegen_link(CodeGen *g, const char *out_file) {
     construct_linker_job(&lj);
 
 
-    if (g->verbose) {
+    if (g->verbose || g->verbose_link) {
         for (size_t i = 0; i < lj.args.length; i += 1) {
             const char *space = (i != 0) ? " " : "";
             fprintf(stderr, "%s%s", space, lj.args.at(i));
@@ -878,7 +879,7 @@ void codegen_link(CodeGen *g, const char *out_file) {
 
     codegen_add_time_event(g, "Done");
 
-    if (g->verbose) {
+    if (g->verbose || g->verbose_link) {
         fprintf(stderr, "OK\n");
     }
 }
diff --git a/src/main.cpp b/src/main.cpp
index 86a6b82ac..ab37de95c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -47,6 +47,7 @@ static int usage(const char *arg0) {
         "  --target-environ [name]      specify target environment\n"
         "  --target-os [name]           specify target operating system\n"
         "  --verbose                    turn on compiler debug output\n"
+        "  --verbose-link               turn on compiler debug output for linking only\n"
         "  --zig-std-dir [path]         directory where zig standard library resides\n"
         "  -dirafter [dir]              same as -isystem but do it last\n"
         "  -isystem [dir]               add additional search path for other .h files\n"
@@ -184,6 +185,7 @@ int main(int argc, char **argv) {
     OutType out_type = OutTypeUnknown;
     const char *out_name = nullptr;
     bool verbose = false;
+    bool verbose_link = false;
     ErrColor color = ErrColorAuto;
     const char *libc_lib_dir = nullptr;
     const char *libc_static_lib_dir = nullptr;
@@ -348,6 +350,8 @@ int main(int argc, char **argv) {
                 is_static = true;
             } else if (strcmp(arg, "--verbose") == 0) {
                 verbose = true;
+            } else if (strcmp(arg, "--verbose-link") == 0) {
+                verbose_link = true;
             } else if (strcmp(arg, "-mwindows") == 0) {
                 mwindows = true;
             } else if (strcmp(arg, "-mconsole") == 0) {
@@ -625,6 +629,7 @@ int main(int argc, char **argv) {
             if (dynamic_linker)
                 codegen_set_dynamic_linker(g, buf_create_from_str(dynamic_linker));
             codegen_set_verbose(g, verbose);
+            g->verbose_link = verbose_link;
             codegen_set_errmsg_color(g, color);
 
             for (size_t i = 0; i < lib_dirs.length; i += 1) {