tests/common/145: Move each target into its own subdir

This helps test whether /WHOLEARCHIVE and --whole-archive arguments
resolve into the right subdirectories.

test cases/common/145 whole archive/allofme/meson.build

@@ -0,0 +1 @@
+stlib = static_library('allofme', '../libfile.c')

test cases/common/145 whole archive/exe/meson.build

@@ -0,0 +1,2 @@
+exe = executable('prog', '../prog.c',
+  link_with : dylib)

test cases/common/145 whole archive/exe2/meson.build

@@ -0,0 +1 @@
+exe2 = executable('prog2', '../prog.c', link_with : dylib2)

test cases/common/145 whole archive/meson.build

@@ -1,5 +1,7 @@
 project('whole archive', 'c')
 
+add_project_arguments('-I' + meson.source_root(), language : 'c')
+
 cc = meson.get_compiler('c')
 
 if cc.get_id() == 'msvc'
@@ -8,22 +10,15 @@ if cc.get_id() == 'msvc'
   endif
 endif
 
-stlib = static_library('allofme', 'libfile.c')
-
-# Nothing in dylib.c uses func1, so the linker would throw it
-# away and thus linking the exe would fail.
-dylib = shared_library('shlib', 'dylib.c',
-  link_whole : stlib)
-
-exe = executable('prog', 'prog.c',
-  link_with : dylib)
+subdir('allofme')
+subdir('shlib')
+subdir('exe')
 
 test('prog', exe)
 
 # link_whole only
-static = static_library('static', 'dylib.c')
-dylib2 = shared_library('link_whole', link_whole : [stlib, static])
-
-exe2 = executable('prog2', 'prog.c', link_with : dylib2)
+subdir('stlib')
+subdir('wholeshlib')
+subdir('exe2')
 
 test('prog2', exe2)

test cases/common/145 whole archive/shlib/meson.build

@@ -0,0 +1,4 @@
+# Nothing in dylib.c uses func1, so the linker would throw it
+# away and thus linking the exe would fail.
+dylib = shared_library('shlib', '../dylib.c',
+  link_whole : stlib)

test cases/common/145 whole archive/stlib/meson.build

@@ -0,0 +1 @@
+static = static_library('static', '../dylib.c')

test cases/common/145 whole archive/wholeshlib/meson.build

@@ -0,0 +1 @@
+dylib2 = shared_library('link_whole', link_whole : [stlib, static])