Error Cmake Is Required To Build Rugged Extconf Rb Failed

Log file for more details.
Error cmake is required to build rugged extconf rb failed. Yes checking for pkg config. Check the mkmf log file for more details. Qiita markdownのgemを利用したサンプルアプリをcloud9環境からherokuにデプロイしたいのですが 以下のエラーがでてしまいうまくデプロイができません 対応方法をアドバイスのほどお願いします gem install rugged v nbs. Yes checking for gmake.
Pgroup prevented a build here as well. Both 0 28 0 and 0 28 1 are broken i have rolled back to 0 27 0 until the fix is released. Extconf rb failed could not create makefile due to some reason probably lack of necessary libraries and or headers. There are pre compiled binaries available on the download page for windows as msi packages and zip files.
Usr local bin ruby extconf rb checking for cmake. Yes checking for cmake. One may alternatively download and build cmake from source. Cmake is required to build rugged.
Extconf rb failed could not create makefile due to some reason probably lack of necessary libraries and or headers. There are several ways to install cmake depending on your platform. No checking for make. No checking for make.
Cmake is required to build rugged. Cmake is required to build rugged. Usr bin ruby2 1 extconf rb checking for cmake. Dbuild clar off dthreadsafe on dbuild shared libs off dcmake c flags fpic dcmake build type relwithdebinfo g unix makefiles failed runtimeerror from extconf rb 66 inblock 2 levels in from extconf rb 65 in chdir from extconf rb 65 inblock in from extconf rb 62 in chdir from extconf rb 62 in extconf failed exit code 1.
Check the mkmf log file for more details. C ruby22 bin ruby exe r siteconf20160914 18296 1y2wwnp rb extconf rb checking for gmake. Extconf rb failed could not create makefile due to some reason probably lack of necessary libraries and or headers. Cmake is required to build rugged.
That version seemed to install fine. Extconf rb failed could not create makefile due to some reason probably lack of necessary libraries and or headers. I experienced the same issue.