unikernel/duniverse/dune_/test/blackbox-tests/test-cases/pkg/ocaml-compiler.t

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+Setting the compiler in the lock directory
+
+We need some data for ocamlc -config
+
+  $ mkdir stdlib && touch stdlib/Makefile.config
+  $ . ./helpers.sh
+  $ cat >ocaml.config <<EOF
+  > version: 4.14.1
+  > standard_library_default: $PWD/stdlib
+  > standard_library: $PWD/stdlib
+  > ccomp_type: cc
+  > c_compiler: clang
+  > ocamlc_cflags: -O2 -fno-strict-aliasing -fwrapv -pthread
+  > ocamlc_cppflags: -D_FILE_OFFSET_BITS=64
+  > ocamlopt_cflags: -O2 -fno-strict-aliasing -fwrapv -pthread
+  > ocamlopt_cppflags: -D_FILE_OFFSET_BITS=64
+  > bytecomp_c_compiler: clang -O2 -fno-strict-aliasing -fwrapv -pthread   -D_FILE_OFFSET_BITS=64
+  > native_c_compiler: clang -O2 -fno-strict-aliasing -fwrapv -pthread   -D_FILE_OFFSET_BITS=64
+  > bytecomp_c_libraries: -lm  -lpthread
+  > native_c_libraries: -lm
+  > native_pack_linker: ld -r -o
+  > architecture: amd64
+  > model: default
+  > int_size: 63
+  > word_size: 64
+  > system: macosx
+  > asm: fake
+  > asm_cfi_supported: true
+  > with_frame_pointers: false
+  > ext_exe:
+  > ext_obj: .o
+  > ext_asm: .s
+  > ext_lib: .a
+  > ext_dll: .so
+  > os_type: Unix
+  > default_executable_name: a.out
+  > systhread_supported: true
+  > host: x86_64-apple-darwin
+  > target: x86_64-apple-darwin
+  > flambda: false
+  > safe_string: true
+  > default_safe_string: true
+  > flat_float_array: true
+  > function_sections: false
+  > afl_instrument: false
+  > windows_unicode: false
+  > supports_shared_libraries: true
+  > naked_pointers: true
+  > exec_magic_number: Caml1999X031
+  > cmi_magic_number: Caml1999I031
+  > cmo_magic_number: Caml1999O031
+  > cma_magic_number: Caml1999A031
+  > cmx_magic_number: Caml1999Y031
+  > cmxa_magic_number: Caml1999Z031
+  > ast_impl_magic_number: Caml1999M031
+  > ast_intf_magic_number: Caml1999N031
+  > cmxs_magic_number: Caml1999D031
+  > cmt_magic_number: Caml1999T031
+  > linear_magic_number: Caml1999L031
+  > EOF
+
+This is the directory for our fake OCaml the test shouldn't observe. We can't
+use the system OCaml for this.
+
+  $ mkdir shadowsystemocaml
+  $ cat >shadowsystemocaml/ocamlc <<EOF
+  > #!/usr/bin/env sh
+  > cat ocaml.config
+  > EOF
+  $ chmod +x shadowsystemocaml/ocamlc
+  $ export PATH="$PWD/shadowsystemocaml:$PATH"
+
+Now we finally make the OCaml package for testing through the lock file:
+
+  $ mkdir dune.lock
+  $ cat >dune.lock/lock.dune <<EOF
+  > (lang package 0.1)
+  > (ocaml mycaml)
+  > EOF
+  $ cat >dune.lock/mycaml.pkg <<EOF
+  > (version 0.0.1)
+  > (source (copy $PWD/mycamlsources))
+  > (build
+  >  (system "\| cat >mycaml.install <<EOF
+  >          "\| bin: [ "ocamlc" ]
+  >          "\| EOF
+  > ))
+  > EOF
+
+  $ cat >dune-project <<EOF
+  > (lang dune 3.11)
+  > EOF
+
+  $ mkdir mycamlsources
+  $ cat >mycamlsources/ocamlc <<EOF
+  > #!/usr/bin/env sh
+  > cat $PWD/ocaml.config
+  > EOF
+  $ chmod +x mycamlsources/ocamlc
+
+  $ cat >dune <<EOF
+  > (dirs :standard \ mycamlsources shadowsystemocaml stdlib)
+  > (rule
+  >  (alias foo)
+  >  (action (system "command -v ocamlc foo")))
+  > EOF
+
+This should display the ocaml from the lock file rather than shadowsystemocaml
+
+  $ DUNE_CONFIG__SYS_OCAML_VERSION=4.14.1 dune build @foo
+  $TESTCASE_ROOT/_build/_private/default/.pkg/mycaml/target/bin/ocamlc