qt6-qtwebengine @6.4.3_2: /bin/sh: …/usr/bin/clang++: No such file or directory

[chrstphrchvz (Christopher Chavez)]

The macOS 11 Intel builder has repeatedly failed to build qt6-qtwebengine for some strange and seemingly nondeterministic reason. The same issue was previously encountered by macOS 11 ARM builder, although it has since had a successful build. Maybe this is actually a ninja or macOS issue. Examples:

​https://build.macports.org/builders/ports-11_x86_64-builder/builds/123606/steps/install-port/logs/stdio

[71/28220] CXX obj/base/base_static/base_switches.o
FAILED: obj/base/base_static/base_switches.o 
../../../../../../../../../../../../../usr/bin/clang++ -MMD -MF obj/base/base_static/base_switches.o.d -DOFFICIAL_BUILD -DTOOLKIT_QT -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D_LIBCPP_HAS_NO_ALIGNED_ALLOCATION -DCR_XCODE_VERSION=1300 -D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES=0 -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -Igen -I../../../../../qtwebengine-everywhere-src-6.4.3/src/3rdparty/chromium -Wall -Wextra -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wimplicit-fallthrough -Wthread-safety -Wunguarded-availability -Wno-missing-field-initializers -Wno-unused-parameter -Wloop-analysis -Wno-unneeded-internal-declaration -Wenum-compare-conditional -Wno-psabi -Wno-ignored-pragma-optimize -Wno-unqualified-std-cast-call -Wno-deprecated-non-prototype -Wshadow -fno-delete-null-pointer-checks -fno-ident -fno-strict-aliasing -fstack-protector -Wno-unknown-argument -Wno-unknown-attributes -Wno-unknown-warning-option -Wno-unknown-pragmas -fcolor-diagnostics -fmerge-all-constants -arch x86_64 -fno-omit-frame-pointer -g0 -isysroot ../../../../../../../../../../../../../Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk -mmacosx-version-min=11.0 -fvisibility=hidden -Wheader-hygiene -Wstring-conversion -Wtautological-overlap-compare -O2 -Wno-parentheses-equality -Wno-tautological-compare -Wno-thread-safety-attributes -Wno-undefined-bool-conversion -Wno-tautological-undefined-compare -std=c++17 -Wno-trigraphs -fno-aligned-new -fno-exceptions -fno-rtti -fvisibility-inlines-hidden -c ../../../../../qtwebengine-everywhere-src-6.4.3/src/3rdparty/chromium/base/base_switches.cc -o obj/base/base_static/base_switches.o
/bin/sh: ../../../../../../../../../../../../../usr/bin/clang++: No such file or directory

​https://build.macports.org/builders/ports-11_x86_64-builder/builds/125144/steps/install-port/logs/stdio

[86/28220] CXX obj/base/allocator/partition_allocator/partition_alloc/address_pool_manager.o
FAILED: obj/base/allocator/partition_allocator/partition_alloc/address_pool_manager.o 
../../../../../../../../../../../../../usr/bin/clang++ -MMD -MF obj/base/allocator/partition_allocator/partition_alloc/address_pool_manager.o.d -DPA_PCSCAN_STACK_SUPPORTED -DOFFICIAL_BUILD -DTOOLKIT_QT -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D_LIBCPP_HAS_NO_ALIGNED_ALLOCATION -DCR_XCODE_VERSION=1300 -D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES=0 -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DBASE_IMPLEMENTATION -Igen -I../../../../../qtwebengine-everywhere-src-6.4.3/src/3rdparty/chromium -Wall -Wextra -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wimplicit-fallthrough -Wthread-safety -Wunguarded-availability -Wno-missing-field-initializers -Wno-unused-parameter -Wloop-analysis -Wno-unneeded-internal-declaration -Wenum-compare-conditional -Wno-psabi -Wno-ignored-pragma-optimize -Wno-unqualified-std-cast-call -Wno-deprecated-non-prototype -Wshadow -fno-delete-null-pointer-checks -fno-ident -fno-strict-aliasing -fstack-protector -Wno-unknown-argument -Wno-unknown-attributes -Wno-unknown-warning-option -Wno-unknown-pragmas -fcolor-diagnostics -fmerge-all-constants -arch x86_64 -O2 -fno-omit-frame-pointer -g0 -isysroot ../../../../../../../../../../../../../Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk -mmacosx-version-min=11.0 -fvisibility=hidden -Wheader-hygiene -Wstring-conversion -Wtautological-overlap-compare -Wno-parentheses-equality -Wno-tautological-compare -Wno-thread-safety-attributes -Wno-undefined-bool-conversion -Wno-tautological-undefined-compare -std=c++17 -Wno-trigraphs -fno-aligned-new -fno-exceptions -fno-rtti -fvisibility-inlines-hidden -c ../../../../../qtwebengine-everywhere-src-6.4.3/src/3rdparty/chromium/base/allocator/partition_allocator/address_pool_manager.cc -o obj/base/allocator/partition_allocator/partition_alloc/address_pool_manager.o
/bin/sh: ../../../../../../../../../../../../../usr/bin/clang++: No such file or directory

​https://build.macports.org/builders/ports-11_arm64-builder/builds/99022/steps/install-port/logs/stdio

[4708/27900] CXX obj/third_party/jsoncpp/jsoncpp/json_writer.o
FAILED: obj/third_party/jsoncpp/jsoncpp/json_writer.o 
../../../../../../../../../../../../../usr/bin/clang++ -MMD -MF obj/third_party/jsoncpp/jsoncpp/json_writer.o.d -DJSON_USE_EXCEPTION=0 -DJSON_USE_NULLREF=0 -DOFFICIAL_BUILD -DTOOLKIT_QT -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D_LIBCPP_HAS_NO_ALIGNED_ALLOCATION -DCR_XCODE_VERSION=1300 -D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES=0 -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -I../../../../../qtwebengine-everywhere-src-6.4.3/src/3rdparty/chromium/third_party/jsoncpp/source/src/lib_json -Igen -I../../../../../qtwebengine-everywhere-src-6.4.3/src/3rdparty/chromium -I../../../../../qtwebengine-everywhere-src-6.4.3/src/3rdparty/chromium/third_party/jsoncpp/source/include -Wall -Wextra -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wimplicit-fallthrough -Wthread-safety -Wunguarded-availability -Wno-missing-field-initializers -Wno-unused-parameter -Wloop-analysis -Wno-unneeded-internal-declaration -Wenum-compare-conditional -Wno-psabi -Wno-ignored-pragma-optimize -Wno-unqualified-std-cast-call -Wno-deprecated-non-prototype -Wshadow -fno-delete-null-pointer-checks -fno-ident -fno-strict-aliasing -fstack-protector -Wno-unknown-argument -Wno-unknown-attributes -Wno-unknown-warning-option -Wno-unknown-pragmas -fcolor-diagnostics -fmerge-all-constants -arch arm64 -O2 -fno-omit-frame-pointer -g0 -isysroot ../../../../../../../../../../../../../Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk -mmacosx-version-min=11.0 -fvisibility=hidden -Wheader-hygiene -Wstring-conversion -Wtautological-overlap-compare -Wno-implicit-fallthrough -Wno-parentheses-equality -Wno-tautological-compare -Wno-thread-safety-attributes -Wno-undefined-bool-conversion -Wno-tautological-undefined-compare -std=c++17 -Wno-trigraphs -fno-aligned-new -fno-exceptions -fno-rtti -fvisibility-inlines-hidden -Wno-deprecated-declarations -c ../../../../../qtwebengine-everywhere-src-6.4.3/src/3rdparty/chromium/third_party/jsoncpp/source/src/lib_json/json_writer.cpp -o obj/third_party/jsoncpp/jsoncpp/json_writer.o
/bin/sh: ../../../../../../../../../../../../../usr/bin/clang++: No such file or directory

​https://build.macports.org/builders/ports-11_arm64-builder/builds/98416/steps/install-port/logs/stdio

[78/27900] CXX obj/base/allocator/partition_allocator/partition_alloc/extended_api.o
FAILED: obj/base/allocator/partition_allocator/partition_alloc/extended_api.o 
../../../../../../../../../../../../../usr/bin/clang++ -MMD -MF obj/base/allocator/partition_allocator/partition_alloc/extended_api.o.d -DPA_PCSCAN_STACK_SUPPORTED -DOFFICIAL_BUILD -DTOOLKIT_QT -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D_LIBCPP_HAS_NO_ALIGNED_ALLOCATION -DCR_XCODE_VERSION=1300 -D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES=0 -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DBASE_IMPLEMENTATION -Igen -I../../../../../qtwebengine-everywhere-src-6.4.3/src/3rdparty/chromium -Wall -Wextra -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wimplicit-fallthrough -Wthread-safety -Wunguarded-availability -Wno-missing-field-initializers -Wno-unused-parameter -Wloop-analysis -Wno-unneeded-internal-declaration -Wenum-compare-conditional -Wno-psabi -Wno-ignored-pragma-optimize -Wno-unqualified-std-cast-call -Wno-deprecated-non-prototype -Wshadow -fno-delete-null-pointer-checks -fno-ident -fno-strict-aliasing -fstack-protector -Wno-unknown-argument -Wno-unknown-attributes -Wno-unknown-warning-option -Wno-unknown-pragmas -fcolor-diagnostics -fmerge-all-constants -arch arm64 -O2 -fno-omit-frame-pointer -g0 -isysroot ../../../../../../../../../../../../../Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk -mmacosx-version-min=11.0 -fvisibility=hidden -Wheader-hygiene -Wstring-conversion -Wtautological-overlap-compare -Wno-parentheses-equality -Wno-tautological-compare -Wno-thread-safety-attributes -Wno-undefined-bool-conversion -Wno-tautological-undefined-compare -std=c++17 -Wno-trigraphs -fno-aligned-new -fno-exceptions -fno-rtti -fvisibility-inlines-hidden -c ../../../../../qtwebengine-everywhere-src-6.4.3/src/3rdparty/chromium/base/allocator/partition_allocator/extended_api.cc -o obj/base/allocator/partition_allocator/partition_alloc/extended_api.o
/bin/sh: ../../../../../../../../../../../../../usr/bin/clang++: No such file or directory