Move down a directory

src/meson.build

+executable('add', 'add.c')
+executable('add2', 'add2.c', dependencies: utils_dep)
+executable('angle', 'angle.c', dependencies: libm)
+executable('binary', 'binary.c')
+executable('complex', 'complex.c', dependencies: libm)
+executable('einstein', 'einstein.c')
+executable('fib', 'fib.c')
+executable('fixed-sizeof', 'fixed-sizeof.c')
+executable('fgets', 'fgets.c')
+executable('gcd', 'gcd.c')
+executable('getchar', 'getchar.c')
+executable('kepler', 'kepler.c', dependencies: libm)
+executable('next', 'next.c', dependencies: libm)
+executable('parrot', 'parrot.c')
+executable('sizeof', 'sizeof.c')
+executable('snprintf', 'snprintf.c')
+executable('strtol', 'strtol.c')
+executable('taylor', 'taylor.c')
+executable('world', 'world.c')
+
+subdir('array')
+subdir('hashtable')
+subdir('list')
+subdir('sockets')
+subdir('winter')
+
+if openmp_dep.found()
+    subdir('openmp')
+endif
+
+if thread_dep.found()
+    subdir('pthread')
+endif