122 lines
4.0 KiB
Diff
122 lines
4.0 KiB
Diff
From: uazo <uazo@users.noreply.github.com>
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Date: Wed, 8 Dec 2021 11:08:45 +0000
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Subject: Allow 'ninja -t compdb' accept one target
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---
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src/ninja.cc | 64 +++++++++++++++++++++++++++++++++++++++++++++++++---
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1 file changed, 61 insertions(+), 3 deletions(-)
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diff --git a/src/ninja.cc b/src/ninja.cc
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index ed004ac8f1fe1a5107db8b1f5c02c4ba957daef4..bbb79da561ddec497863230cd99ffbe98b9a76e5 100644
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--- a/src/ninja.cc
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+++ b/src/ninja.cc
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@@ -17,6 +17,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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+#include <unordered_set>
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#ifdef _WIN32
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#include "getopt.h"
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@@ -73,6 +74,8 @@ struct Options {
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/// Whether phony cycles should warn or print an error.
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bool phony_cycle_should_err;
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+
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+ const char* user_given_target;
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};
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/// The Ninja main() loads up a series of data structures; various tools need
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@@ -211,6 +214,7 @@ void Usage(const BuildConfig& config) {
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" -l N do not start new jobs if the load average is greater than N\n"
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" -n dry run (don't run commands but act like they succeeded)\n"
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" -v show all command lines while building\n"
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+" -a generate compilation database for given target\n"
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"\n"
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" -d MODE enable debugging (use -d list to list modes)\n"
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" -t TOOL run a subtool (use -t list to list subtools)\n"
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@@ -662,7 +666,56 @@ void EncodeJSONString(const char *str) {
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}
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}
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+bool GetAllDependentEdges(Node* node, std::vector<Edge*>* depend_edges,
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+ std::unordered_set<Node*>* visited_nodes=NULL,
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+ std::unordered_set<Edge*>* visited_edges=NULL) {
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+ if (visited_nodes == NULL || visited_edges == NULL) {
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+ std::unordered_set<Node*> visited_nodes_;
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+ std::unordered_set<Edge*> visited_edges_;
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+ return GetAllDependentEdges(node, depend_edges, &visited_nodes_, &visited_edges_);
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+ }
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+ if (node == NULL || depend_edges == NULL) {
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+ Error("Internal error");
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+ return false;
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+ }
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+ if (visited_nodes->count(node)) {
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+ return true;
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+ } else {
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+ visited_nodes->insert(node);
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+ }
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+ Edge* edge = node->in_edge();
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+ // Leaf node
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+ if (!edge || visited_edges->count(edge)) {
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+ return true;
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+ } else {
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+ visited_edges->insert(edge);
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+ depend_edges->push_back(edge);
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+ }
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+ for (Node* input_node : edge->inputs_) {
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+ if (!GetAllDependentEdges(input_node, depend_edges, visited_nodes, visited_edges))
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+ return false;
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+ }
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+ return true;
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+}
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+
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int NinjaMain::ToolCompilationDatabase(const Options* options, int argc, char* argv[]) {
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+ std::vector<Edge*>* edges_to_process = &(state_.edges_);
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+ std::vector<Edge*> user_interested_edges;
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+
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+ if (options->user_given_target) {
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+ string err;
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+ Node* user_given_target = CollectTarget(
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+ options->user_given_target, &err);
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+ if (!err.empty()) {
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+ Error("%s: %s", options->user_given_target, err.c_str());
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+ return 1;
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+ }
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+
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+ if (!GetAllDependentEdges(user_given_target, &user_interested_edges))
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+ return 1;
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+ edges_to_process = &user_interested_edges;
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+ }
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+
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bool first = true;
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vector<char> cwd;
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@@ -676,8 +729,8 @@ int NinjaMain::ToolCompilationDatabase(const Options* options, int argc, char* a
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}
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putchar('[');
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- for (vector<Edge*>::iterator e = state_.edges_.begin();
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- e != state_.edges_.end(); ++e) {
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+ for (vector<Edge*>::iterator e = edges_to_process->begin();
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+ e != edges_to_process->end(); ++e) {
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if ((*e)->inputs_.empty())
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continue;
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for (int i = 0; i != argc; ++i) {
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@@ -1047,9 +1100,14 @@ int ReadFlags(int* argc, char*** argv,
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int opt;
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while (!options->tool &&
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- (opt = getopt_long(*argc, *argv, "d:f:j:k:l:nt:vw:C:h", kLongOptions,
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+ (opt = getopt_long(*argc, *argv, "a:d:f:j:k:l:nt:vw:C:h", kLongOptions,
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NULL)) != -1) {
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switch (opt) {
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+ case 'a':
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+ options->user_given_target = optarg;
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+ if (!options->user_given_target)
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+ Fatal("Expecting one target name");
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+ break;
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case 'd':
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if (!DebugEnable(optarg))
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return 1;
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