https://llvm.org/bugs/show_bug.cgi?id=30508
Bug ID: 30508
Summary: modulemap umbrellas check for folder existence
Product: clang
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Modules
Assignee: unassignedclangb...@nondot.org
Reporter: vvasi...@cern.ch
CC: dgre...@apple.com, llvm-bugs@lists.llvm.org
Classification: Unclassified
cat T.cxx
#include "A.h"
int i;
cat includes/A.h
cat includes/module.modulemap
module NonExistent1 {
umbrella "NonExistent"
module * { export * }
}
module NonExistent2 {
module H1 { header "NonExistent/H1" export * }
module H2 { header "NonExistent/H2" export * }
}
clang++ -I includes -fmodules -fsyntax-only T.cxx
includes/module.modulemap:2:12: error: umbrella directory 'NonExistent' not
found umbrella "NonExistent"
If I comment out module NonExistent1 but leave NonExistent2 it compiles just
fine, even if the folder NonExistent does not exist.
IMO, the umbrella module NonExistent1 should behave as NonExistent2, i.e. not
complain if the folder doesn't exist.
This would help users (including our frameworks) shorten the modulemaps, adding
umbrella modules for optional components.
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