qtwebengine: better workaround for too long build directory

Task-number: QTBUG-59769
Change-Id: I727f560ca1b7c7aeeee7ae3128785a2e8cb55e4a
Reviewed-by: Mikko Gronoff <mikko.gronoff@qt.io>
Reviewed-by: Samuli Piippo <samuli.piippo@qt.io>

1 files changed, 42 insertions, 0 deletions

diff --git a/recipes-qt/qt5/qtwebengine/0001-chromium-workaround-for-too-long-.rps-file-name.patch b/recipes-qt/qt5/qtwebengine/0001-chromium-workaround-for-too-long-.rps-file-name.patch
new file mode 100644
index 00000000..42ceeacf
--- /dev/null
+++ b/recipes-qt/qt5/qtwebengine/0001-chromium-workaround-for-too-long-.rps-file-name.patch
@@ -0,0 +1,42 @@
+From c72097e8790553771daf3231124c3fbe1a438379 Mon Sep 17 00:00:00 2001
+From: Samuli Piippo <samuli.piippo@qt.io>
+Date: Thu, 30 Mar 2017 11:37:24 +0300
+Subject: [PATCH] chromium: workaround for too long .rps file name
+
+Ninja may fail when the build directory is too long:
+
+ninja: error: WriteFile(__third_party_WebKit_Source_bindings_modules_\
+interfaces_info_individual_modules__home_qt_work_build_build-nitrogen\
+6x_tmp_work_cortexa9hf-neon-mx6qdl-poky-linux-gnueabi_qtwebengine_5.9\
+.0_gitAUTOINC_29afdb0a34_049134677a-r0_build_src_toolchain_target__ru\
+le.rsp): Unable to create file. File name too long
+
+Task-number: QTBUG-59769
+Change-Id: I73c5e64ae5174412be2a675e35b0b6047f2bf4c1
+---
+ src/3rdparty/chromium/tools/gn/ninja_action_target_writer.cc | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/src/3rdparty/chromium/tools/gn/ninja_action_target_writer.cc b/src/3rdparty/chromium/tools/gn/ninja_action_target_writer.cc
+index a5bc6cd..5cefbfe 100644
+--- a/src/3rdparty/chromium/tools/gn/ninja_action_target_writer.cc
++++ b/src/3rdparty/chromium/tools/gn/ninja_action_target_writer.cc
+@@ -115,9 +115,18 @@ std::string NinjaActionTargetWriter::WriteRuleDefinition() {
+     // strictly necessary for regular one-shot actions, but it's easier to
+     // just always define unique_name.
+     std::string rspfile = custom_rule_name;
++
++    //quick workaround if filename length > 255 - ".rsp", just cut the dirs starting from the end
++    //please note ".$unique_name" is not used at the moment
++    int pos = 0;
++    std::string delimiter("_");
++    while (rspfile.length() > 251 && (pos = rspfile.find_last_of(delimiter)) != std::string::npos)
++        rspfile = rspfile.substr(0,pos);
++
+     if (!target_->sources().empty())
+       rspfile += ".$unique_name";
+     rspfile += ".rsp";
++
+     out_ << "  rspfile = " << rspfile << std::endl;
+ 
+     // Response file contents.