Merge topic 'CMakeDependentOption-revert-parens' into release-3.21 d777ca12f6 CMakeDependentOption: Revert "Allow parentheses in the depends string" Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !6368

diff --git a/Source/cmCoreTryCompile.cxx b/Source/cmCoreTryCompile.cxx
index 8ecf264..bf18143 100644
--- a/Source/cmCoreTryCompile.cxx
+++ b/Source/cmCoreTryCompile.cxx

@@ -570,6 +570,13 @@
               *cmp0123 == "NEW"_s ? "NEW" : "OLD");
     }
 
+    /* Set cache/normal variable policy to match outer project.
+       It may affect toolchain files.  */
+    if (this->Makefile->GetPolicyStatus(cmPolicies::CMP0126) !=
+        cmPolicies::NEW) {
+      fprintf(fout, "cmake_policy(SET CMP0126 OLD)\n");
+    }
+
     std::string projectLangs;
     for (std::string const& li : testLangs) {
       projectLangs += " " + li;

diff --git a/Tests/RunCMake/ToolchainFile/CMP0126-NEW-stderr.txt b/Tests/RunCMake/ToolchainFile/CMP0126-NEW-stderr.txt
new file mode 100644
index 0000000..7b91b43
--- /dev/null
+++ b/Tests/RunCMake/ToolchainFile/CMP0126-NEW-stderr.txt

@@ -0,0 +1 @@
+^try_compile CMP0126='NEW' VAR='1'

diff --git a/Tests/RunCMake/ToolchainFile/CMP0126-NEW-toolchain.cmake b/Tests/RunCMake/ToolchainFile/CMP0126-NEW-toolchain.cmake
new file mode 100644
index 0000000..2f1ec86
--- /dev/null
+++ b/Tests/RunCMake/ToolchainFile/CMP0126-NEW-toolchain.cmake

@@ -0,0 +1 @@
+include("${CMAKE_CURRENT_LIST_DIR}/CMP0126-toolchain.cmake")

diff --git a/Tests/RunCMake/ToolchainFile/CMP0126-NEW.cmake b/Tests/RunCMake/ToolchainFile/CMP0126-NEW.cmake
new file mode 100644
index 0000000..62d4df1
--- /dev/null
+++ b/Tests/RunCMake/ToolchainFile/CMP0126-NEW.cmake

@@ -0,0 +1,2 @@
+cmake_policy(SET CMP0126 NEW)
+enable_language(C)

diff --git a/Tests/RunCMake/ToolchainFile/CMP0126-OLD-stderr.txt b/Tests/RunCMake/ToolchainFile/CMP0126-OLD-stderr.txt
new file mode 100644
index 0000000..f3c068a
--- /dev/null
+++ b/Tests/RunCMake/ToolchainFile/CMP0126-OLD-stderr.txt

@@ -0,0 +1 @@
+^try_compile CMP0126='OLD' VAR='2'

diff --git a/Tests/RunCMake/ToolchainFile/CMP0126-OLD-toolchain.cmake b/Tests/RunCMake/ToolchainFile/CMP0126-OLD-toolchain.cmake
new file mode 100644
index 0000000..2f1ec86
--- /dev/null
+++ b/Tests/RunCMake/ToolchainFile/CMP0126-OLD-toolchain.cmake

@@ -0,0 +1 @@
+include("${CMAKE_CURRENT_LIST_DIR}/CMP0126-toolchain.cmake")

diff --git a/Tests/RunCMake/ToolchainFile/CMP0126-OLD.cmake b/Tests/RunCMake/ToolchainFile/CMP0126-OLD.cmake
new file mode 100644
index 0000000..ef821fe
--- /dev/null
+++ b/Tests/RunCMake/ToolchainFile/CMP0126-OLD.cmake

@@ -0,0 +1,2 @@
+cmake_policy(SET CMP0126 OLD)
+enable_language(C)

diff --git a/Tests/RunCMake/ToolchainFile/CMP0126-WARN-stderr.txt b/Tests/RunCMake/ToolchainFile/CMP0126-WARN-stderr.txt
new file mode 100644
index 0000000..f3c068a
--- /dev/null
+++ b/Tests/RunCMake/ToolchainFile/CMP0126-WARN-stderr.txt

@@ -0,0 +1 @@
+^try_compile CMP0126='OLD' VAR='2'

diff --git a/Tests/RunCMake/ToolchainFile/CMP0126-WARN-toolchain.cmake b/Tests/RunCMake/ToolchainFile/CMP0126-WARN-toolchain.cmake
new file mode 100644
index 0000000..2f1ec86
--- /dev/null
+++ b/Tests/RunCMake/ToolchainFile/CMP0126-WARN-toolchain.cmake

@@ -0,0 +1 @@
+include("${CMAKE_CURRENT_LIST_DIR}/CMP0126-toolchain.cmake")

diff --git a/Tests/RunCMake/ToolchainFile/CMP0126-WARN.cmake b/Tests/RunCMake/ToolchainFile/CMP0126-WARN.cmake
new file mode 100644
index 0000000..426e2b1
--- /dev/null
+++ b/Tests/RunCMake/ToolchainFile/CMP0126-WARN.cmake

@@ -0,0 +1,2 @@
+# leave CMP0126 unset
+enable_language(C)

diff --git a/Tests/RunCMake/ToolchainFile/CMP0126-toolchain.cmake b/Tests/RunCMake/ToolchainFile/CMP0126-toolchain.cmake
new file mode 100644
index 0000000..d5af14f
--- /dev/null
+++ b/Tests/RunCMake/ToolchainFile/CMP0126-toolchain.cmake

@@ -0,0 +1,7 @@
+get_property(_IN_TC GLOBAL PROPERTY IN_TRY_COMPILE)
+if(_IN_TC)
+  cmake_policy(GET CMP0126 cmp0126)
+  set(VAR 1)
+  set(VAR 2 CACHE STRING "")
+  message("try_compile CMP0126='${cmp0126}' VAR='${VAR}'")
+endif()

diff --git a/Tests/RunCMake/ToolchainFile/RunCMakeTest.cmake b/Tests/RunCMake/ToolchainFile/RunCMakeTest.cmake
index 304c105..7744ee8 100644
--- a/Tests/RunCMake/ToolchainFile/RunCMakeTest.cmake
+++ b/Tests/RunCMake/ToolchainFile/RunCMakeTest.cmake

@@ -11,6 +11,9 @@
 run_cmake_toolchain(FlagsInit)
 run_cmake_toolchain(LangVars)
 run_cmake_toolchain(LinkFlagsInit)
+run_cmake_toolchain(CMP0126-NEW)
+run_cmake_toolchain(CMP0126-OLD)
+run_cmake_toolchain(CMP0126-WARN)
 
 function(run_IncludeDirectories)
   run_cmake_toolchain(IncludeDirectories)