build(gtest): added gtest as a subproject in case it is not already installed on the system

tests/config/meson.build

@@ -11,7 +11,7 @@ foreach test_file : test_sources
   test_exe = executable(
       exe_name,
       test_file,
-      dependencies: [gtest_dep, config_dep],
+      dependencies: [gtest_dep, config_dep, gtest_main],
       include_directories: include_directories('../../src/config/public'),
       link_with: libconst,  # Link the dobj library
       install_rpath: '@loader_path/../../src'  # Ensure runtime library path resolves correctly

tests/const/meson.build

@@ -11,7 +11,7 @@ foreach test_file : test_sources
   test_exe = executable(
       exe_name,
       test_file,
-      dependencies: [gtest_dep, const_dep],
+      dependencies: [gtest_dep, const_dep, gtest_main],
       include_directories: include_directories('../../src/const/public'),
       link_with: libconst,  # Link the dobj library
       install_rpath: '@loader_path/../../src'  # Ensure runtime library path resolves correctly

tests/dobj/meson.build

@@ -13,7 +13,7 @@ foreach test_file : test_sources
   test_exe = executable(
       exe_name,
       test_file,
-      dependencies: gtest_dep,
+      dependencies: [gtest_dep, gtest_main],
       include_directories: include_directories('../../src/dobj/public'),
       link_with: libdobj,  # Link the dobj library
       install_rpath: '@loader_path/../../src'  # Ensure runtime library path resolves correctly

tests/eos/meson.build

@@ -11,7 +11,7 @@ foreach test_file : test_sources
   test_exe = executable(
       exe_name,
       test_file,
-      dependencies: [gtest_dep, eos_dep],
+      dependencies: [gtest_dep, eos_dep, gtest_main],
       install_rpath: '@loader_path/../../src'  # Ensure runtime library path resolves correctly
   )
 

tests/meshIO/meson.build

@@ -11,7 +11,7 @@ foreach test_file : test_sources
   test_exe = executable(
       exe_name,
       test_file,
-      dependencies: [gtest_dep, mfem_dep],
+      dependencies: [gtest_dep, mfem_dep, gtest_main],
       include_directories: include_directories('../../src/meshIO/public'),
       link_with: libmeshIO,  # Link the dobj library
       install_rpath: '@loader_path/../../src'  # Ensure runtime library path resolves correctly

tests/meson.build

@@ -1,5 +1,6 @@
 # Google Test dependency
 gtest_dep = dependency('gtest', main: true, required : true)
+gtest_main = dependency('gtest_main', required: true)
 gtest_nomain_dep = dependency('gtest', main: false, required : true)
 
 # Subdirectories for unit and integration tests

tests/opatIO/meson.build

@@ -13,7 +13,7 @@ foreach test_file : test_sources
   test_exe = executable(
       exe_name,
       test_file,
-      dependencies: [gtest_dep, picosha2_dep],
+      dependencies: [gtest_dep, picosha2_dep, gtest_main],
       include_directories: include_directories('../../src/opatIO/public'),
       link_with: libopatIO,  # Link the dobj library
       install_rpath: '@loader_path/../../src'  # Ensure runtime library path resolves correctly

tests/probe/meson.build

@@ -11,7 +11,7 @@ foreach test_file : test_sources
   test_exe = executable(
       exe_name,
       test_file,
-      dependencies: [gtest_dep, probe_dep, mfem_dep, quill_dep],
+      dependencies: [gtest_dep, probe_dep, mfem_dep, quill_dep, gtest_main],
       install_rpath: '@loader_path/../../src'  # Ensure runtime library path resolves correctly
   )