ldc2 1.5.0 ldc-build-runtime failed at Android-arm preset on windows

[lyrachord]

Follow guides at https://wiki.dlang.org/Build_D_for_Android
cmake 3.9.6/3.10.0-rc5
NDK 16
ninja 1.8.2
ldc2 1.5.0

ldc-build-runtime --reset --ninja --targetPreset=Android-arm failed

LLVM ERROR: Cannot select: 0x1a81f10fb40: f64 = bitcast 0x1a81f10f458
0x1a81f10f458: i64 = build_pair 0x1a81f10f590, 0x1a81f10f250
0x1a81f10f590: i32,ch = CopyFromReg 0x1a81f37dfd8, Register:i32 %vreg16
0x1a81f10fce0: i32 = Register %vreg16
0x1a81f10f250: i32,ch = CopyFromReg 0x1a81f10f590:1, Register:i32 %vreg17
0x1a81f10f5f8: i32 = Register %vreg17
In function: _d_array_init_double

rem set cmake_home=D:\cmake\cmake-3.9.6-win64-x64
set cmake_home=D:\cmake\cmake-3.10.0-rc5-win64-x64
set ldc_home=D:\D2\ldc2-1.5.0-win64-msvc
set NDK=D:\android\SDK\ndk-bundle

set path=%path%;%cmake_home%\bin;%ldc_home%\bin

ldc2 --version

set CC=%NDK%\toolchains\llvm\prebuilt\windows-x86_64\bin\clang

rem --testrunners --reset 

ldc-build-runtime  --ninja --targetPreset=Android-arm

[lyrachord]

try to add d-flags:

ldc-build-runtime --reset --ninja --targetPreset=Android-arm --DFlags=-float-abi=softfp

then ldc-build-runtime works fine

NOTE: -float-abi=soft not work

#1863 files
@see tests/codegen/attr_targetoptions_fp.d

+// See Github issue #1860
 +
 +// REQUIRES: atleast_llvm307
 +
 +// RUN: %ldc -c -output-ll -of=%t.ll -float-abi=soft   %s && FileCheck --check-prefix=SOFT %s < %t.ll
 +// RUN: %ldc -c -output-ll -of=%t.ll -float-abi=softfp %s && FileCheck --check-prefix=HARD %s < %t.ll
 +
 +// SOFT: define{{.*}} @{{.*}}3fooFZv{{.*}} #[[KEYVALUE:[0-9]+]]
 +// HARD: define{{.*}} @{{.*}}3fooFZv{{.*}} #[[KEYVALUE:[0-9]+]]
 +void foo()
 +{
 +}
 +
 +// SOFT: attributes #[[KEYVALUE]]
 +// SOFT-DAG: "target-features"="{{.*}}+soft-float{{.*}}"
 +// HARD: attributes #[[KEYVALUE]]
 +// HARD-NOT: "target-features"="{{.*}}+soft-float{{.*}}"

[kinke]

Thanks for the report. I guess -float-abi=softfp is just missing in this line; it's passed to clang for the C parts a few lines up. Pinging @joakim-noah.

[joakim-noah]

I'm surprised that made the difference, what I do is add --dFlags="-w;-mcpu=cortex-a8" (or you can add cortex-a15 or whatever more specific cpu you want), which is needed for llvm 5.0. I've been lazy about updating the wiki with that, as I need to test the Android apks with it and want to rewrite some of those sections.

[joakim-noah]

I've updated the wiki with that flag so that building the stdlib won't fail. I'll test the sample apps too and update the wiki as needed. Let me know if you have any issues after adding that flag.

[lyrachord]

Thanks