CMake find_package dependency backend (#4444)

4 files changed, 78 insertions, 0 deletions

diff --git a/test cases/linuxlike/13 cmake dependency/incdir/myinc.h b/test cases/linuxlike/13 cmake dependency/incdir/myinc.h
new file mode 100644
index 000000000..4b66a6caa
--- /dev/null
+++ b/test cases/linuxlike/13 cmake dependency/incdir/myinc.h
@@ -0,0 +1,3 @@
+#pragma once
+
+#include<zlib.h>
diff --git a/test cases/linuxlike/13 cmake dependency/meson.build b/test cases/linuxlike/13 cmake dependency/meson.build
new file mode 100644
index 000000000..1cf667a8e
--- /dev/null
+++ b/test cases/linuxlike/13 cmake dependency/meson.build
@@ -0,0 +1,52 @@
+project('external CMake dependency', 'c')
+
+# Zlib is probably on all dev machines.
+
+dep = dependency('ZLIB', version : '>=1.2', method : 'cmake')
+exe = executable('zlibprog', 'prog-checkver.c',
+  dependencies : dep,
+  c_args : '-DFOUND_ZLIB="' + dep.version() + '"')
+
+assert(dep.version().version_compare('>=1.2'), 'CMake version numbers exposed incorrectly.')
+
+# Check that CMake targets are extracted
+dept = dependency('ZLIB', version : '>=1.2', method : 'cmake', modules : 'ZLIB::ZLIB')
+exet = executable('zlibprog_target', 'prog-checkver.c',
+  dependencies : dep,
+  c_args : '-DFOUND_ZLIB="' + dep.version() + '"')
+
+# Check that the version exposed by zlib internally is the same as the one we
+# retrieve from the pkg-config file. This assumes that the packager didn't mess
+# up, but we can be reasonably sure of that.
+test('zlibtest', exe)
+
+# Test that dependencies of dependencies work.
+dep2 = declare_dependency(dependencies : dep)
+exe2 = executable('zlibprog2', 'prog.c', dependencies : dep2)
+test('zlibtest2', exe2)
+
+# Try to find a nonexistent library to ensure requires:false works.
+
+depf1 = dependency('nvakuhrabnsdfasdf', required : false, method : 'cmake')
+depf2 = dependency('ZLIB', required : false, method : 'cmake', modules : 'dfggh::hgfgag')
+
+assert(depf2.found() == false, 'Invalid CMake targets should fail')
+
+# Try to compile a test that takes a dep and an include_directories
+
+cc = meson.get_compiler('c')
+zlibdep = cc.find_library('z')
+code = '''#include<myinc.h>
+
+int main(int argc, char **argv) {
+    void * something = deflate;
+    if(something != 0)
+        return 0;
+    return 1;
+}
+'''
+
+inc = include_directories('incdir')
+
+r = cc.run(code, include_directories : inc, dependencies : zlibdep)
+assert(r.returncode() == 0, 'Running manual zlib test failed.')
diff --git a/test cases/linuxlike/13 cmake dependency/prog-checkver.c b/test cases/linuxlike/13 cmake dependency/prog-checkver.c
new file mode 100644
index 000000000..16b717059
--- /dev/null
+++ b/test cases/linuxlike/13 cmake dependency/prog-checkver.c
@@ -0,0 +1,15 @@
+#include <zlib.h>
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, char **argv) {
+    void * something = deflate;
+    if(strcmp(ZLIB_VERSION, FOUND_ZLIB) != 0) {
+        printf("Meson found '%s' but zlib is '%s'\n", FOUND_ZLIB, ZLIB_VERSION);
+        return 2;
+    }
+    if(something != 0)
+        return 0;
+    printf("Couldn't find 'deflate'\n");
+    return 1;
+}
diff --git a/test cases/linuxlike/13 cmake dependency/prog.c b/test cases/linuxlike/13 cmake dependency/prog.c
new file mode 100644
index 000000000..cea986d50
--- /dev/null
+++ b/test cases/linuxlike/13 cmake dependency/prog.c
@@ -0,0 +1,8 @@
+#include<zlib.h>
+
+int main(int argc, char **argv) {
+    void * something = deflate;
+    if(something != 0)
+        return 0;
+    return 1;
+}