Created unit test to ensure linker arguments from consecutive dependencies are kept in order.

run_unittests.py

@@ -1755,6 +1755,22 @@ class LinuxlikeTests(BasePlatformTests):
         env['LD_LIBRARY_PATH'] = installed_libdir
         self.assertEqual(subprocess.call(installed_exe, env=env), 0)
 
+    def test_order_of_l_arguments(self):
+        testdir = os.path.join(self.unit_test_dir, '8 L order')
+        os.environ['PKG_CONFIG_PATH'] = testdir
+        self.init(testdir)
+        expected_order = ['-L/me/first', '-L/me/second', '-L/me/third', '-L/me/fourth']
+        with open(os.path.join(self.builddir, 'build.ninja')) as ifile:
+            for line in ifile:
+                if expected_order[0] in line:
+                    previous_index = line.index(expected_order[0])
+                    for entry in expected_order[1:]:
+                        current_index = line.index(entry)
+                        self.assertLess(previous_index, current_index)
+                        previous_index = current_index
+                    return
+        raise RuntimeError('Linker entries not found in the Ninja file.')
+
 class LinuxArmCrossCompileTests(BasePlatformTests):
     '''
     Tests that verify cross-compilation to Linux/ARM

test cases/unit/8 L order/first.pc

@@ -0,0 +1,13 @@
+prefix=/usr
+exec_prefix=${prefix}
+libdir=${prefix}/lib/x86_64-linux-gnu
+sharedlibdir=${libdir}
+includedir=${prefix}/include
+
+Name: jonne
+Description: jonne library
+Version: 1.0.0
+
+Requires:
+Libs: -L/me/first -L/me/second
+Cflags: -I${includedir}

test cases/unit/8 L order/meson.build

@@ -0,0 +1,6 @@
+project('jonne', 'c')
+
+firstdep = dependency('first')
+seconddep = dependency('second')
+
+executable('lprog', 'prog.c', dependencies : [firstdep, seconddep])

test cases/unit/8 L order/prog.c

@@ -0,0 +1,5 @@
+#include<stdio.h>
+
+int main(int argc, char **argv) {
+  return 0;
+}

test cases/unit/8 L order/second.pc

@@ -0,0 +1,13 @@
+prefix=/usr
+exec_prefix=${prefix}
+libdir=${prefix}/lib/x86_64-linux-gnu
+sharedlibdir=${libdir}
+includedir=${prefix}/include
+
+Name: jonne2
+Description: jonne2 library
+Version: 1.0.0
+
+Requires:
+Libs: -L/me/third -L/me/fourth
+Cflags: -I${includedir}