[C++] Add support for .POSIX:
Add a global flag that is set to "true" when .POSIX: is encountered. The
flag will switch the bash flags from "-c" to "-ec", i.e. enable correct
error handling of shell command lines.
Fixes https://github.com/google/kati/issues/48
Change-Id: Ieea386742b05b52d209b74e640e14212f0e2da88
diff --git a/dep.cc b/dep.cc
index da209c7..0a0fc8e 100644
--- a/dep.cc
+++ b/dep.cc
@@ -25,6 +25,7 @@
#include "eval.h"
#include "fileutil.h"
+#include "flags.h"
#include "log.h"
#include "rule.h"
#include "stats.h"
@@ -261,6 +262,10 @@
for (Symbol t : targets)
phony_.insert(t);
}
+ if (GetRuleInputs(Intern(".POSIX"), &targets, &loc)) {
+ // .POSIX: enables bash -e command line option globally
+ g_flags.posix_shell = true;
+ }
if (GetRuleInputs(Intern(".KATI_RESTAT"), &targets, &loc)) {
for (Symbol t : targets)
restat_.insert(t);
@@ -287,7 +292,6 @@
".EXPORT_ALL_VARIABLES",
".NOTPARALLEL",
".ONESHELL",
- ".POSIX",
NULL
};
for (const char** p = kUnsupportedBuiltinTargets; *p; p++) {
diff --git a/flags.h b/flags.h
index 910acbf..35c53c4 100644
--- a/flags.h
+++ b/flags.h
@@ -34,6 +34,7 @@
bool is_dry_run;
bool is_silent_mode;
bool is_syntax_check_only;
+ bool posix_shell;
bool regen;
bool regen_ignoring_kati_binary;
bool use_find_emulator;
diff --git a/ninja.cc b/ninja.cc
index d2dc702..6fe6876 100644
--- a/ninja.cc
+++ b/ninja.cc
@@ -185,6 +185,7 @@
default_target_(NULL) {
ev_->set_avoid_io(true);
shell_ = EscapeNinja(ev->EvalVar(kShellSym));
+ shell_flags_ = g_flags.posix_shell ? "ec" : "c";
const string use_goma_str = ev->EvalVar(Intern("USE_GOMA"));
use_goma_ = !(use_goma_str.empty() || use_goma_str == "false");
if (g_flags.goma_dir)
@@ -501,7 +502,7 @@
*o << " command = " << shell_ << " $out.rsp\n";
} else {
EscapeShell(&cmd_buf);
- *o << " command = " << shell_ << " -c \"" << cmd_buf << "\"\n";
+ *o << " command = " << shell_ << " -" << shell_flags_ << " \"" << cmd_buf << "\"\n";
}
if (node->is_restat) {
*o << " restat = 1\n";
@@ -769,6 +770,7 @@
bool use_goma_;
string gomacc_;
string shell_;
+ string shell_flags_;
map<string, string> used_envs_;
string kati_binary_;
const double start_time_;