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-rw-r--r--Source/cmNinjaTargetGenerator.cxx10
-rw-r--r--Source/cmPlaceholderExpander.cxx4
-rw-r--r--Tests/RunCMake/Swift/ForceResponseFile-check-stdout.txt6
3 files changed, 14 insertions, 6 deletions
diff --git a/Source/cmNinjaTargetGenerator.cxx b/Source/cmNinjaTargetGenerator.cxx
index bc97e88..9bc292c 100644
--- a/Source/cmNinjaTargetGenerator.cxx
+++ b/Source/cmNinjaTargetGenerator.cxx
@@ -848,6 +848,14 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang,
flags = cmStrCat(responseFlag, rule.RspFile);
vars.Defines = "";
vars.Includes = "";
+
+ // Swift consumes all source files in a module at once, which reaches
+ // command line length limits pretty quickly. Inject source files into the
+ // response file in this case as well.
+ if (lang == "Swift") {
+ rule.RspContent = cmStrCat(rule.RspContent, ' ', vars.Source);
+ vars.Source = "";
+ }
}
// Tell ninja dependency format so all deps can be loaded into a database
@@ -1925,8 +1933,6 @@ void cmNinjaTargetGenerator::WriteSwiftObjectBuildStatement(
// For that, we need the "NEW" behavior for CMP0157. Otherwise, we have to
// fall back on the old "linker" build. Otherwise, this should be
// indistinguishable from the old behavior.
- //
- // FIXME(#25490): Add response file support to Swift object build step
if (sources.empty()) {
return;
diff --git a/Source/cmPlaceholderExpander.cxx b/Source/cmPlaceholderExpander.cxx
index 118017e..11c7485 100644
--- a/Source/cmPlaceholderExpander.cxx
+++ b/Source/cmPlaceholderExpander.cxx
@@ -48,6 +48,10 @@ std::string& cmPlaceholderExpander::ExpandVariables(std::string& s)
}
// add the rest of the input
expandedInput += s.substr(pos, s.size() - pos);
+ // remove trailing whitespace
+ if (!expandedInput.empty() && expandedInput.back() == ' ') {
+ expandedInput.pop_back();
+ }
s = expandedInput;
return s;
diff --git a/Tests/RunCMake/Swift/ForceResponseFile-check-stdout.txt b/Tests/RunCMake/Swift/ForceResponseFile-check-stdout.txt
index 576f5a1..3d70f12 100644
--- a/Tests/RunCMake/Swift/ForceResponseFile-check-stdout.txt
+++ b/Tests/RunCMake/Swift/ForceResponseFile-check-stdout.txt
@@ -1,4 +1,2 @@
-swiftc [^
-]* -c @CMakeFiles/L.dir/L.o.swift.rsp [^
-]*
-.*swiftc -emit-library -static -o libL.a @CMakeFiles/L.rsp.*
+swiftc -j [0-9]+ -num-threads [0-9]+ -c @CMakeFiles/L.dir/L.o.swift.rsp
+.*swiftc -emit-library -static -o libL.a @CMakeFiles/L.rsp