I have been working through the LLVM Kaleidoscope Tutorial for OCaml. On the third part of the tutorial, I have navigated to the example code in the folder
OCaml-Kaleidoscope\Chapter3
I am encountering an issue when compiling with
ocamlbuild toy.byte
on cygwin. This is the code given in the tutorial to compile.
The error I am getting is
''ocamlc.opt -c -o codegen.cmo codegen.ml
File "codegen.ml", line 5, characters 5-9:
Error: Unbound module Llvm
Exit code 2 while executing this command:
''ocamlc.opt -c -o codegen.cmo codegen.ml
I looked up some solutions to this issue. One solution I found was to use
ocamlbuild -use-ocamlfind toy.byte -package llvm
instead of
ocamlbuild toy.byte
However, when I tried that I received this error:
Failure: ocamlfind not found on path, but -no-ocamlfind not used.
To fix this I tried:
opam install ocamlfind
But ocamlfind is already installed.
Another solution I found was to use:
opam install llvm
This resulted in:
The following actions will be performed:
- install llvm 3.7
=-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
=-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[llvm: ./install.sh 3.7] Command started
[ERROR] The installation of llvm failed at "./install.sh 3.7 make
C:\\cygwin64\\home\\setup\\.opam\\system
C:\\cygwin64\\home\\setup\\.opam\\system\\lib".
[llvm: ocamlfind remove] Command started
#=== ERROR while installing llvm.3.7 ==========================================#
# opam-version 1.3.0~dev2 (d4f7e01216dbb44af4e7cc6539a1b0afa9be9d2c)
# os win32
# command bash -c ./install.sh 3.7 make C:/cygwin64/home/setup/.opa m/system C:/cygwin64/home/setup/.opam/system/lib
# path C:\cygwin64\home\setup\.opam\system\build\llvm.3.7
# exit-code 2
# env-file C:\cygwin64\home\setup\.opam\system\build\llvm.3.7\llvm-1 0768-58c514.env
# stdout-file C:\cygwin64\home\setup\.opam\system\build\llvm.3.7\llvm-1 0768-58c514.out
# stderr-file C:\cygwin64\home\setup\.opam\system\build\llvm.3.7\llvm-1 0768-58c514.err
### stdout ###
# [...]
# config.status: executing bindings/ocaml/Makefile.ocaml commands
# make: Entering directory '/home/setup/.opam/system/build/llvm.3.7/build/bindin gs'
# llvm[0]: Constructing LLVMBuild project information.
# make[1]: Entering directory '/home/setup/.opam/system/build/llvm.3.7/build/bin dings/ocaml'
# make[2]: Entering directory '/home/setup/.opam/system/build/llvm.3.7/build/bin dings/ocaml/llvm'
# llvm[2]: Compiling llvm_ocaml.c for Release+Asserts build
# /home/setup/.opam/system/build/llvm.3.7/Makefile.rules:1536: recipe for target '/home/setup/.opam/system/build/llvm.3.7/build/bindings/ocaml/llvm/Release+Asse rts/llvm_ocaml.o' failed
# make[2]: Leaving directory '/home/setup/.opam/system/build/llvm.3.7/build/bind ings/ocaml/llvm'
# /home/setup/.opam/system/build/llvm.3.7/Makefile.rules:880: recipe for target 'all' failed
# make[1]: Leaving directory '/home/setup/.opam/system/build/llvm.3.7/build/bind ings/ocaml'
# /home/setup/.opam/system/build/llvm.3.7/Makefile.rules:939: recipe for target 'ocaml/.makeall' failed
# make: Leaving directory '/home/setup/.opam/system/build/llvm.3.7/build/binding s'
### stderr ###
# [...]
# configure: WARNING: dlopen() not found - disabling plugin support
# configure: WARNING: mmap() of a fixed address required but not supported
# configure: WARNING: mmap() of files required but not found
# configure: WARNING: --enable-bindings=ocaml specified, but OUnit 2 is not inst alled. Tests will not run
# + make -C bindings all SYSTEM_LLVM_CONFIG=llvm-config
# gcc.exe: error: /home/setup/.opam/system/build/llvm.3.7/bindings/ocaml/llvm/ll vm_ocaml.c: No such file or directory
# gcc.exe: fatal error: no input files
# compilation terminated.
# /usr/bin/rm: cannot remove '/home/setup/.opam/system/build/llvm.3.7/build/bind ings/ocaml/llvm/Release+Asserts/llvm_ocaml.d.tmp': No such file or directory
# make[2]: *** [/home/setup/.opam/system/build/llvm.3.7/build/bindings/ocaml/llv m/Release+Asserts/llvm_ocaml.o] Error 1
# make[1]: *** [all] Error 1
# make: *** [ocaml/.makeall] Error 2
=-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The following actions failed
- install llvm 3.7
No changes have been performed
=-=- llvm.3.7 troubleshooting -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
=> This package relies on external (system) dependencies that may be missing.
`opam depext llvm.3.7' may help you find the correct installation for your
system.
I am using version 3.8.0 of llvm and version 4.02.3 of OCaml from this link.
Am I on the right track? What do I need to do to fix this?
