[vcpkg-find-acquire-program] Revise test port

scripts/test_ports/vcpkg-find-acquire-program/portfile.cmake

@@ -1,21 +1,62 @@
-set(VCPKG_POLICY_EMPTY_PACKAGE enabled)
-
-if(CMAKE_HOST_WIN32)
-    foreach(PROG GO JOM NASM PERL YASM GIT PYTHON3 PYTHON2 RUBY 7Z NUGET FLEX BISON GPERF GASPREPROCESSOR DARK SCONS SWIG DOXYGEN ARIA2 PKGCONFIG)
-        vcpkg_find_acquire_program(${PROG})
-        foreach(SUBPROG IN LISTS ${PROG})
-            if(NOT EXISTS "${SUBPROG}")
-                message(FATAL_ERROR "Program ${SUBPROG} did not exist.")
-            endif()
-        endforeach()
-    endforeach()
-endif()
-
-foreach(PROG GN NINJA MESON BAZEL)
-    vcpkg_find_acquire_program(${PROG})
-    foreach(SUBPROG IN LISTS ${PROG})
-        if(NOT EXISTS "${SUBPROG}")
-            message(FATAL_ERROR "Program ${SUBPROG} did not exist.")
-        endif()
-    endforeach()
-endforeach()
+set(VCPKG_POLICY_EMPTY_PACKAGE enabled)
+
+# For each vcpkg_find_acquire_program(NAME).cmake script,
+# there must be a literal call to vcpkg_find_acquire_program(NAME).cmake
+
+set(variables BAZEL BISON FLEX GIT GN NINJA PERL PKGCONFIG PYTHON2 PYTHON3 YASM)
+vcpkg_find_acquire_program(BAZEL)
+vcpkg_find_acquire_program(BISON)
+vcpkg_find_acquire_program(FLEX)
+vcpkg_find_acquire_program(GIT)
+vcpkg_find_acquire_program(GN)
+vcpkg_find_acquire_program(NINJA)
+vcpkg_find_acquire_program(PERL)
+vcpkg_find_acquire_program(PKGCONFIG)
+vcpkg_find_acquire_program(PYTHON2)
+vcpkg_find_acquire_program(PYTHON3)
+vcpkg_find_acquire_program(YASM)
+
+if(NOT VCPKG_TARGET_IS_OSX)
+    # System python too old (3.9; meson needs 3.10)
+    list(APPEND variables MESON)
+    vcpkg_find_acquire_program(MESON)
+endif()
+
+if(VCPKG_HOST_IS_LINUX)
+    list(APPEND variables PATCHELF)
+    vcpkg_find_acquire_program(PATCHELF)
+endif()
+
+if(VCPKG_HOST_IS_WINDOWS)
+    list(APPEND variables 7Z ARIA2 CLANG DARK DOXYGEN GASPREPROCESSOR GO GPERF JOM NASM NUGET RUBY SCONS SWIG)
+    vcpkg_find_acquire_program(7Z)
+    vcpkg_find_acquire_program(ARIA2)
+    vcpkg_find_acquire_program(CLANG)
+    vcpkg_find_acquire_program(DARK)
+    vcpkg_find_acquire_program(DOXYGEN)
+    vcpkg_find_acquire_program(GASPREPROCESSOR)
+    vcpkg_find_acquire_program(GO)
+    vcpkg_find_acquire_program(GPERF)
+    vcpkg_find_acquire_program(JOM)
+    vcpkg_find_acquire_program(NASM)
+    vcpkg_find_acquire_program(NUGET)
+    vcpkg_find_acquire_program(RUBY)
+    vcpkg_find_acquire_program(SCONS)
+    vcpkg_find_acquire_program(SWIG)
+endif()
+
+set(missing "")
+foreach(variable IN LISTS variables)
+    list(POP_BACK "${variable}" program)
+    if(NOT EXISTS "${program}")
+        list(APPEND missing "${variable}: ${program}")
+    endif()
+    list(POP_FRONT "${variable}" interpreter)
+    if(interpreter AND NOT EXISTS "${interpreter}")
+        list(APPEND missing "${variable} (interpreter): ${interpreter}")
+    endif()
+endforeach()
+if(missing)
+    list(JOIN missing "\n   " missing)
+    message(FATAL_ERROR "The following programs do not exist:\n   ${missing}")
+endif()

scripts/test_ports/vcpkg-find-acquire-program/vcpkg.json

@@ -3,5 +3,5 @@
   "version-string": "0",
   "port-version": 1,
   "description": "Test port to exercise vcpkg_find_acquire_program",
-  "supports": "windows"
+  "supports": "native"
 }