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### Running command:
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###   chmod a+r GrafGen -R && E:\biocbuild\bbs-3.21-bioc\R\bin\R.exe CMD build --keep-empty-dirs --no-resave-data GrafGen
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* checking for file 'GrafGen/DESCRIPTION' ... OK
* preparing 'GrafGen':
* checking DESCRIPTION meta-information ... OK
* cleaning src
* installing the package to build vignettes
      -----------------------------------
* installing *source* package 'GrafGen' ...
** using staged installation
** libs
using C compiler: 'gcc.exe (GCC) 13.3.0'
using C++ compiler: 'G__~1.EXE (GCC) 13.3.0'
g++ -std=gnu++17  -I"E:/biocbuild/bbs-3.21-bioc/R/include" -DNDEBUG     -I"C:/rtools44/x86_64-w64-mingw32.static.posix/include"      -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign   -c AncestrySnps.cpp -o AncestrySnps.o
g++ -std=gnu++17  -I"E:/biocbuild/bbs-3.21-bioc/R/include" -DNDEBUG     -I"C:/rtools44/x86_64-w64-mingw32.static.posix/include"      -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign   -c BedFileSnpGeno.cpp -o BedFileSnpGeno.o
g++ -std=gnu++17  -I"E:/biocbuild/bbs-3.21-bioc/R/include" -DNDEBUG     -I"C:/rtools44/x86_64-w64-mingw32.static.posix/include"      -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign   -c BimFileAncestrySnps.cpp -o BimFileAncestrySnps.o
g++ -std=gnu++17  -I"E:/biocbuild/bbs-3.21-bioc/R/include" -DNDEBUG     -I"C:/rtools44/x86_64-w64-mingw32.static.posix/include"      -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign   -c FamFileSamples.cpp -o FamFileSamples.o
gcc  -I"E:/biocbuild/bbs-3.21-bioc/R/include" -DNDEBUG     -I"C:/rtools44/x86_64-w64-mingw32.static.posix/include"      -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c GrafGenHp_init.c -o GrafGenHp_init.o
g++ -std=gnu++17  -I"E:/biocbuild/bbs-3.21-bioc/R/include" -DNDEBUG     -I"C:/rtools44/x86_64-w64-mingw32.static.posix/include"      -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign   -c GrafPop.cpp -o GrafPop.o
g++ -std=gnu++17  -I"E:/biocbuild/bbs-3.21-bioc/R/include" -DNDEBUG     -I"C:/rtools44/x86_64-w64-mingw32.static.posix/include"      -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign   -c SampleGenoAncestry.cpp -o SampleGenoAncestry.o
g++ -std=gnu++17  -I"E:/biocbuild/bbs-3.21-bioc/R/include" -DNDEBUG     -I"C:/rtools44/x86_64-w64-mingw32.static.posix/include"      -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign   -c SampleGenoDist.cpp -o SampleGenoDist.o
g++ -std=gnu++17  -I"E:/biocbuild/bbs-3.21-bioc/R/include" -DNDEBUG     -I"C:/rtools44/x86_64-w64-mingw32.static.posix/include"      -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign   -c Util.cpp -o Util.o
g++ -std=gnu++17  -I"E:/biocbuild/bbs-3.21-bioc/R/include" -DNDEBUG     -I"C:/rtools44/x86_64-w64-mingw32.static.posix/include"      -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign   -c VcfSampleAncestrySnpGeno.cpp -o VcfSampleAncestrySnpGeno.o
g++ -std=gnu++17 -shared -s -static-libgcc -o GrafGen.dll tmp.def AncestrySnps.o BedFileSnpGeno.o BimFileAncestrySnps.o FamFileSamples.o GrafGenHp_init.o GrafPop.o SampleGenoAncestry.o SampleGenoDist.o Util.o VcfSampleAncestrySnpGeno.o -LC:/rtools44/x86_64-w64-mingw32.static.posix/lib/x64 -LC:/rtools44/x86_64-w64-mingw32.static.posix/lib -LE:/biocbuild/bbs-3.21-bioc/R/bin/x64 -lR
C:\rtools44\x86_64-w64-mingw32.static.posix\bin/ld.exe: VcfSampleAncestrySnpGeno.o:VcfSampleAncestrySnpGeno.cpp:(.text+0xa6a): undefined reference to `gzopen'
C:\rtools44\x86_64-w64-mingw32.static.posix\bin/ld.exe: VcfSampleAncestrySnpGeno.o:VcfSampleAncestrySnpGeno.cpp:(.text+0xc47): undefined reference to `gzread'
C:\rtools44\x86_64-w64-mingw32.static.posix\bin/ld.exe: VcfSampleAncestrySnpGeno.o:VcfSampleAncestrySnpGeno.cpp:(.text+0xcf9): undefined reference to `gzclose'
C:\rtools44\x86_64-w64-mingw32.static.posix\bin/ld.exe: VcfSampleAncestrySnpGeno.o:VcfSampleAncestrySnpGeno.cpp:(.text+0x1b11): undefined reference to `gzeof'
C:\rtools44\x86_64-w64-mingw32.static.posix\bin/ld.exe: VcfSampleAncestrySnpGeno.o:VcfSampleAncestrySnpGeno.cpp:(.text+0x1f9f): undefined reference to `gzerror'
collect2.exe: error: ld returned 1 exit status
no DLL was created
ERROR: compilation failed for package 'GrafGen'
* removing 'E:/biocbuild/bbs-3.21-bioc/tmpdir/RtmpM7u4os/Rinst1cbe015802c38/GrafGen'
      -----------------------------------
ERROR: package installation failed