build: define 'ptrace' option

Define a new 'ptrace' option to replace the old TEST_RUN_PTRACE
environment variable. This is much cleaner and avoids relying on random
environment variables for communication.

Signed-off-by: David Rheinsberg <david.rheinsberg@gmail.com>

meson.build

@@ -12,6 +12,7 @@ project_description = 'Intrusive Red-Black Tree Collection'
 
 add_project_arguments('-D_GNU_SOURCE', language: 'c')
 mod_pkgconfig = import('pkgconfig')
+use_ptrace = get_option('ptrace')
 
 dep_cstdaux = dependency('libcstdaux-1')
 add_project_arguments(dep_cstdaux.get_variable('cflags').split(' '), language: 'c')

meson_options.txt

@@ -0,0 +1 @@
+option('ptrace', type: 'boolean', value: false, description: 'Allow ptrace in test suite')

src/meson.build

@@ -62,8 +62,10 @@ test('Generic Map', test_map)
 test_misc = executable('test-misc', ['test-misc.c'], dependencies: libcrbtree_dep)
 test('Miscellaneous', test_misc)
 
-test_parallel = executable('test-parallel', ['test-parallel.c'], dependencies: libcrbtree_dep)
-test('Lockless Parallel Readers', test_parallel)
+if use_ptrace
+        test_parallel = executable('test-parallel', ['test-parallel.c'], dependencies: libcrbtree_dep)
+        test('Lockless Parallel Readers', test_parallel)
+endif
 
 test_posix = executable('test-posix', ['test-posix.c'], dependencies: libcrbtree_dep)
 test('Posix tsearch(3p) Comparison', test_posix)