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Print a more descriptive error message if setting up the build environment fails

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This commit is contained in:
Eelco Dolstra 2012-09-28 21:26:36 -04:00
parent 95c74eae26
commit f406288cc7
1 changed files with 14 additions and 3 deletions
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17
src/libstore/build.cc
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@ -825,6 +825,11 @@ private:
HashRewrites rewritesToTmp, rewritesFromTmp; HashRewrites rewritesToTmp, rewritesFromTmp;
PathSet redirectedOutputs; PathSet redirectedOutputs;
/* Magic exit code denoting that setting up the child environment
failed. (It's possible that the child actually returns the
exit code, but ah well.) */
const static int childSetupFailed = 189;
public: public:
DerivationGoal(const Path & drvPath, Worker & worker); DerivationGoal(const Path & drvPath, Worker & worker);
~DerivationGoal(); ~DerivationGoal();
@ -1348,6 +1353,8 @@ void DerivationGoal::buildDone()
/* Check the exit status. */ /* Check the exit status. */
if (!statusOk(status)) { if (!statusOk(status)) {
deleteTmpDir(false); deleteTmpDir(false);
if (WIFEXITED(status) && WEXITSTATUS(status) == childSetupFailed)
throw Error(format("failed to set up the build environment for `%1%'") % drvPath);
throw BuildError(format("builder for `%1%' %2%") throw BuildError(format("builder for `%1%' %2%")
% drvPath % statusToString(status)); % drvPath % statusToString(status));
} }
@ -1872,6 +1879,8 @@ void DerivationGoal::initChild()
/* Warning: in the child we should absolutely not make any SQLite /* Warning: in the child we should absolutely not make any SQLite
calls! */ calls! */
bool inSetup = true;
try { /* child */ try { /* child */
#if CHROOT_ENABLED #if CHROOT_ENABLED
@ -2023,15 +2032,17 @@ void DerivationGoal::initChild()
restoreSIGPIPE(); restoreSIGPIPE();
/* Execute the program. This should not return. */ /* Execute the program. This should not return. */
inSetup = false;
execve(program.c_str(), (char * *) &args[0], (char * *) envArr); execve(program.c_str(), (char * *) &args[0], (char * *) envArr);
throw SysError(format("executing `%1%'") throw SysError(format("executing `%1%'") % drv.builder);
% drv.builder);
} catch (std::exception & e) { } catch (std::exception & e) {
std::cerr << format("build error: %1%") % e.what() << std::endl; std::cerr << format("build error: %1%") % e.what() << std::endl;
quickExit(inSetup ? childSetupFailed : 1);
} }
quickExit(1);
abort(); /* never reached */
} }