"

    Copyright (C) 2015-now Jan Vrany

    This code is not an open-source (yet). You may use this code

    for your own experiments and projects, given that:

    * all modification to the code will be sent to the

      original author for inclusion in future releases

    * this is not used in any commercial software

    This license is provisional and may (will) change in

    a future.

"

"{ Package: 'jv:llvm_s' }"

"{ NameSpace: Smalltalk }"

Object subclass:#LLVMConfig

	instanceVariableNames:''

	classVariableNames:'LLVMConfigPath BinDir LibDir LibraryPath'

	poolDictionaries:''

	category:'LLVM-S-Internal'

!

!LLVMConfig class methodsFor:'documentation'!

copyright

"

    Copyright (C) 2015-now Jan Vrany

    This code is not an open-source (yet). You may use this code

    for your own experiments and projects, given that:

    * all modification to the code will be sent to the

      original author for inclusion in future releases

    * this is not used in any commercial software

    This license is provisional and may (will) change in

    a future.

"

! !

!LLVMConfig class methodsFor:'initialization'!

initialize

    "Invoked at system start or when the class is dynamically loaded."

    | path |

    LLVMConfigPath := nil.

    path := OperatingSystem getEnvironment:'LLVM_CONFIG'.

    path notNil ifTrue:[ 

        path asFilename isExecutable ifTrue:[

            self llvmConfigPath: path.

            ^ self

        ] ifFalse:[ 

            Logger warning:'LLVM_CONFIG environment specified but referred files is not executable. Ignoring'.

        ].

    ].

    OperatingSystem isUNIXlike ifTrue:[ 

        #('-3.8' '-3.7' '') do:[:ver |

            path := OperatingSystem pathOfCommand: 'llvm-config' , ver.

            path notNil ifTrue:[

                self llvmConfigPath: path.

                ^ self.

            ]

        ].

        ^ self

    ].

    self error: 'This operating system is not supported'.

    "Modified: / 25-09-2015 / 03:54:33 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

llvmConfigPath: aStringOrFilename

    "Set's the path to LLVM config which effectively

     defines which version of LLVM to use.

     Must be called before using any other LLVM API"

    | path |

    path := aStringOrFilename asFilename.

    path exists ifFalse:[ 

        self error: '`', path pathName ,'` does not exist'.

        ^ self.

    ].

    path isExecutable ifFalse:[ 

        self error: '`', path pathName ,'` does not executable'.

        ^ self.

    ].

    LLVMConfigPath := path.

    BinDir := LibDir := LibraryPath := nil.

    "Created: / 07-08-2015 / 13:31:31 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!LLVMConfig class methodsFor:'accessing'!

bindir

    "Returns result of `llvm-config --bindir` as Filename"

    BinDir isNil ifTrue:[ 

        LLVMConfigPath isNil ifTrue:[ 

            self error: 'No path to `llvm-config` set, use #llvmConfigPath:'

        ].

        BinDir := OperatingSystem getCommandOutputFrom: LLVMConfigPath asString, ' --bindir'

    ].

    ^ BinDir

    "

    LLVMConfig bindir

    "

    "Created: / 07-08-2015 / 13:29:48 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

libdir

    "Returns result of `llvm-config --libdir` as Filename"

    LibDir isNil ifTrue:[ 

        LLVMConfigPath isNil ifTrue:[ 

            self error: 'No path to `llvm-config` set, use #llvmConfigPath:'

        ].

        LibDir := OperatingSystem getCommandOutputFrom: LLVMConfigPath asString, ' --libdir'.

        LibDir asFilename exists ifFalse:[ 

            Logger warning: 'libdir reported by %1 does not exist (%2)' with: LLVMConfigPath with: LibDir.

            OperatingSystem isUNIXlike ifTrue:[ 

                "/ Assume Linux here

                ExternalAddress pointerSize == 8 ifTrue:[ 

                    "/ Pure guess...

                    LibDir := '/usr/lib/x86_64-linux-gnu'.

                ] ifFalse:[ 

                    LibDir := '/usr/lib/i386-linux-gnu'.

                ].

            ] ifFalse:[

                self error: 'Unsupported platform'.

            ]

        ].  

        LibDir asFilename exists ifFalse:[ 

            self error: 'Cannot find LLVM libdir'

        ].

    ].

    ^ LibDir

    "

    LibDir := nil.

    LLVMConfig libdir

    "

    "Created: / 07-08-2015 / 13:41:30 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified (comment): / 13-09-2015 / 06:59:46 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

libraryPath

    "Return path to `libLLVM.x.y.z.so` for linking"

    LibraryPath isNil ifTrue:[ 

        | vsn libpath |             

        LLVMConfigPath isNil ifTrue:[ 

            self error: 'No path to `llvm-config` set, use #llvmConfigPath:'

        ].

        vsn := OperatingSystem getCommandOutputFrom: LLVMConfigPath asString, ' --version'.

        libpath := self libdir asFilename / ('libLLVM-', vsn , '.so').

        libpath exists ifFalse:[

            "/ OK, try libLLVM-x.y.so.1

            libpath := self libdir asFilename / ('libLLVM-', (vsn copyTo: (vsn lastIndexOf: $.) - 1)   , '.so.1').

            libpath exists ifFalse:[

                "/ OK, try libLLCM-x.ysvn.so - LLVM 3.8 source builds use this

                (vsn endsWith: 'svn') ifTrue:[  

                    libpath := self libdir asFilename / ('libLLVM-', (vsn copyTo: (vsn lastIndexOf: $.) - 1)   , 'svn.so').

                ].

                libpath exists ifFalse:[ 

                    self error: 'Could not find libLLVM.x.y.z.so'

                ].

            ].

        ].

        LibraryPath := libpath pathName.                                                        

    ].

    ^ LibraryPath 

    "

    LibraryPath := nil.

    LLVMConfig libraryPath

    "

    "Created: / 07-08-2015 / 14:04:52 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 26-01-2016 / 15:50:35 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!LLVMConfig class methodsFor:'documentation'!

version_HG

    ^ '$Changeset: <not expanded> $'

! !

LLVMConfig initialize!