I have three computers with the Android NDK environment configured identically, according to these instructions .
On one of them, when I start the Cygwin shell to build my project with “ndk-build” I get make error 127:
The other two computers work just fine and compiles the JNI code as expected.

To see more details, retry the build, using:

ndk-build NDK_LOG=1 V=1

I now see the build fails at the arm-eabi-gcc:

me@basic ~ # ndk-build NDK_LOG=1 V=1 Android NDK: NDK installation path auto-detected: '/cygdrive/d/work_code/android /android-ndk-r4b' Android NDK: GNU Make version 3.81 detected Android NDK: Host OS was auto-detected: windows Android NDK: Host CPU was auto-detected: x86 Android NDK: HOST_TAG set to windows Android NDK: Host awk tool was auto-detected: awk Android NDK: Host awk test returned: Pass Android NDK: This NDK supports the following toolchains and target ABIs: Android NDK: arm-eabi-4.2.1: armeabi Android NDK: arm-eabi-4.4.0: armeabi armeabi-v7a Android NDK: x86-4.2.1: x86 Android NDK: Found supported platforms: android-3 android-4 android-5 android-8 Android NDK: PLATFORM android-3 supports: arm Android NDK: ABI arm sysroot is: /cygdrive/d/work_code/android/android-ndk-r4b /build/platforms/android-3/arch-arm Android NDK: PLATFORM android-4 supports: arm Android NDK: ABI arm sysroot is: /cygdrive/d/work_code/android/android-ndk-r4b /build/platforms/android-4/arch-arm Android NDK: PLATFORM android-5 supports: arm x86 Android NDK: ABI arm sysroot is: /cygdrive/d/work_code/android/android-ndk-r4b /build/platforms/android-5/arch-arm Android NDK: ABI x86 sysroot is: /cygdrive/d/work_code/android/android-ndk-r4b /build/platforms/android-5/arch-x86 Android NDK: PLATFORM android-8 supports: arm x86 Android NDK: ABI arm sysroot is: /cygdrive/d/work_code/android/android-ndk-r4b /build/platforms/android-8/arch-arm Android NDK: ABI x86 sysroot is: /cygdrive/d/work_code/android/android-ndk-r4b Android NDK: Found stable platform levels: 3 4 5 8 Android NDK: Found max platform level: 8 Android NDK: Found project path: /cygdrive/d/work_code/android/JNIProiect Android NDK: Parsing /cygdrive/d/work_code/android/android-ndk-r4b/build/core/de fault-application.mk Android NDK: Found APP_PLATFORM=android-7 in /cygdrive/d/work_code/android/Blu eInput/default.properties Android NDK: Adjusting APP_PLATFORM to android-5 Android NDK: Using build script /cygdrive/d/work_code/android/JNIProiect/jni/An droid.mk Android NDK: Application 'local' is not debuggable Android NDK: Selecting release optimization mode (app is not debuggable) Android NDK: Building application 'local' for ABI 'armeabi' Android NDK: Using target toolchain 'arm-eabi-4.4.0' for 'armeabi' ABI rm -f /cygdrive/d/work_code/android/JNIProiect/libs/armeabi/lib*.so /cygdrive/d/w ork_code/android/JNIProiect/libs/armeabi-v7a/lib*.so /cygdrive/d/work_code/androi d/JNIProiect/libs/x86/lib*.so rm -f /cygdrive/d/work_code/android/JNIProiect/libs/armeabi/gdbserver /cygdrive/d /work_code/android/JNIProiect/libs/armeabi-v7a/gdbserver /cygdrive/d/work_code/an droid/JNIProiect/libs/x86/gdbserver rm -f /cygdrive/d/work_code/android/JNIProiect/libs/armeabi/gdb.setup /cygdrive/d /work_code/android/JNIProiect/libs/armeabi-v7a/gdb.setup /cygdrive/d/work_code/an droid/JNIProiect/libs/x86/gdb.setup Compile thumb : JNIProiect <= /cygdrive/d/work_code/android/JNIProiect/jni/BlueIn put.c /cygdrive/d/work_code/android/android-ndk-r4b/build/prebuilt/windows/arm-eabi-4. 4.0/bin/arm-eabi-gcc -I/cygdrive/d/work_code/android/android-ndk-r4b/build/platf orms/android-5/arch-arm/usr/include -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH _5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -Wno-psabi -march=armv5te -mtune=xsc ale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline- limit=64 -I/cygdrive/d/work_code/android/JNIProiect/jni -DANDROID -Wa,--noexecs tack -O2 -DNDEBUG -g -c -MMD -MP -MF /cygdrive/d/work_code/android/JNIProiect/obj /local/armeabi/objs/JNIProiect/JNIProiect.o.d /cygdrive/d/work_code/android/BlueIn put/jni/JNIProiect.c -o /cygdrive/d/work_code/android/JNIProiect/obj/local/armeabi /objs/JNIProiect/JNIProiect.o make: *** [/cygdrive/d/work_code/android/JNIProiect/obj/local/armeabi/objs/BlueIn put/JNIProiect.o] Error 127 me@basic ~

Manually opening arm-eabi-gcc.exe in d:\work_code\android\android-ndk-r4b\build\prebuilt\windows\arm-eabi-4.4.0\bin\ fails with "The procedure entry point __ctype_ptr__could not be located in the dynamic link library cygwin1.dll." :
In this case the problem is that cygwin1.dll located in the cygwin installation folder was not found. To fix this add the cygwin/bin folder to your system's environment path variable:

This still doesn't help, I get error 127 again. Copying the cygwin1.dll where the arm-eabi-gcc.exe is, seems to help but running the build script again results in Error 1. So this is not a solution.

A quick research on the internet shows this is a popular issue. Some say you need to reinstall Cygwin, others blame the NDK package. No use.

If I try to compile a C file to native executable, using the Makefile script presented here , it fails with error 127. I don't have more time to waste on time, but I assume is some kind of conflict with other development tools I have installed on this machine (MS VS, etc).

This machine also fails to connect to the Android properly, via USB, I get lots of timeouts and disconnects on large data volume. I've presented that issue here .

Should you find a solution, let me know.

Posted in Android , Software Tagged 127 , Android , error , make , ndk