Prevent building always-enabled PHP extensions as standalone

Author: petk

cmake/ext/date/CMakeLists.txt

@@ -15,6 +15,14 @@ project(
   LANGUAGES C
 )
 
+if(PROJECT_IS_TOP_LEVEL)
+  message(
+    FATAL_ERROR
+    "The PHP date extension is intended to be built only within the "
+    "top-level PHP source tree (php-src)."
+  )
+endif()
+
 include(FeatureSummary)
 
 add_feature_info(

cmake/ext/hash/CMakeLists.txt

@@ -23,6 +23,14 @@ project(
   LANGUAGES C
 )
 
+if(PROJECT_IS_TOP_LEVEL)
+  message(
+    FATAL_ERROR
+    "The PHP hash extension is intended to be built only within the "
+    "top-level PHP source tree (php-src)."
+  )
+endif()
+
 include(FeatureSummary)
 include(PHP/CheckCompilerFlag)
 

cmake/ext/json/CMakeLists.txt

@@ -14,6 +14,14 @@ project(
   LANGUAGES C
 )
 
+if(PROJECT_IS_TOP_LEVEL)
+  message(
+    FATAL_ERROR
+    "The PHP json extension is intended to be built only within the "
+    "top-level PHP source tree (php-src)."
+  )
+endif()
+
 include(FeatureSummary)
 
 add_feature_info(

cmake/ext/pcre/CMakeLists.txt

@@ -31,6 +31,14 @@ project(
   LANGUAGES C
 )
 
+if(PROJECT_IS_TOP_LEVEL)
+  message(
+    FATAL_ERROR
+    "The PHP pcre extension is intended to be built only within the "
+    "top-level PHP source tree (php-src)."
+  )
+endif()
+
 include(CheckSourceRuns)
 include(CheckSymbolExists)
 include(CMakePushCheckState)

cmake/ext/random/CMakeLists.txt

@@ -14,6 +14,14 @@ project(
   LANGUAGES C
 )
 
+if(PROJECT_IS_TOP_LEVEL)
+  message(
+    FATAL_ERROR
+    "The PHP random extension is intended to be built only inside the PHP top "
+    "level project (php-src)."
+  )
+endif()
+
 include(CheckIncludeFiles)
 include(CheckSymbolExists)
 include(FeatureSummary)

cmake/ext/reflection/CMakeLists.txt

@@ -14,6 +14,14 @@ project(
   LANGUAGES C
 )
 
+if(PROJECT_IS_TOP_LEVEL)
+  message(
+    FATAL_ERROR
+    "The PHP reflection extension is intended to be built only within the "
+    "top-level PHP source tree (php-src)."
+  )
+endif()
+
 include(FeatureSummary)
 
 add_feature_info(

cmake/ext/spl/CMakeLists.txt

@@ -13,6 +13,14 @@ project(
   LANGUAGES C
 )
 
+if(PROJECT_IS_TOP_LEVEL)
+  message(
+    FATAL_ERROR
+    "The PHP spl extension is intended to be built only within the "
+    "top-level PHP source tree (php-src)."
+  )
+endif()
+
 include(FeatureSummary)
 
 add_feature_info(

cmake/ext/standard/CMakeLists.txt

@@ -27,6 +27,14 @@ project(
   LANGUAGES C
 )
 
+if(PROJECT_IS_TOP_LEVEL)
+  message(
+    FATAL_ERROR
+    "The PHP standard extension is intended to be built only within the "
+    "top-level PHP source tree (php-src)."
+  )
+endif()
+
 include(CheckIncludeFiles)
 include(CheckSymbolExists)
 include(FeatureSummary)