Saturday, October 14, 2023

Building in QNX Momentics 6.5 SP1 throws "Couldn't reserve space for cygwin's heap, Win32 error 0"

Building in QNX Momentics 6.5 SP1 throws "Couldn't reserve space for cygwin's heap, Win32 error 0"

Buiding barebones QNX C++ program throws "Couldn't reserve space for cygwin's heap, Win32 error 0". See sample output below
C:\QNX650\host\win32\x86\usr\bin\make.exe -k CPULIST=x86 all --file=C:/Users/u1/AppData/Local/Temp/QMakefile169726255947317724.tmp 
      0 [main] us 0 init_cheap: VirtualAlloc pointer is null, Win32 error 487
AllocationBase 0x0, BaseAddress 0x71690000, RegionSize 0x330000, State 0x10000
C:\QNX650\host\win32\x86\usr\bin\sh.exe: *** Couldn't reserve space for cygwin's heap, Win32 error 0
C:/QNX650/host/win32/x86/usr/bin/make.exe -j 1 -Cx86 -fMakefile all
make.exe[1]: Entering directory `C:/ide-4.7-workspace/test1/x86'
C:/QNX650/host/win32/x86/usr/bin/make.exe -j 1 -Co -fMakefile all 
make.exe[2]: Entering directory `C:/ide-4.7-workspace/test1/x86/o'
make.exe[2]: Nothing to be done for `all'.
make.exe[2]: Leaving directory `C:/ide-4.7-workspace/test1/x86/o'
C:/QNX650/host/win32/x86/usr/bin/make.exe -j 1 -Co-g -fMakefile all
make.exe[2]: Entering directory `C:/ide-4.7-workspace/test1/x86/o-g'
make.exe[2]: Nothing to be done for `all'.
make.exe[2]: Leaving directory `C:/ide-4.7-workspace/test1/x86/o-g'
make.exe[1]: Leaving directory `C:/ide-4.7-workspace/test1/x86'
It seems like "C:\QNX650\host\win32\x86\usr\bin\msys-1.0.dll" needs to be loaded at specific address, to fix do the following: 
  • Install 32-bit version of Git for Windows - it ships with rebase.exe
  • Then run the following commands:

    Create a backup, just incase we need to revert back.
    cp "C:\QNX650\host\win32\x86\usr\bin\msys-1.0.dll" "C:\QNX650\host\win32\x86\usr\bin\msys-1.0.dll.bak"
    

    Change directory to the rebase.exe executable
    cd "C:\Program Files (x86)\Git\bin"
    

    Perform rebase
    rebase.exe -b 0x50000000 C:\QNX650\host\win32\x86\usr\bin\msys-1.0.dll
    

Refs:
https://www.qnx.com/support/knowledgebase.html?id=5011O000001OLXD

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