build: fix IGNORE_PCH option for modules and sort the PCH header list

build-support/custom-modules/ns3-module-macros.cmake

@@ -66,7 +66,7 @@ function(build_lib)
                                        "${BLIB_HEADER_FILES}"
     )
 
-    if(${PRECOMPILE_HEADERS_ENABLED} AND (NOT ${IGNORE_PCH}))
+    if(${PRECOMPILE_HEADERS_ENABLED} AND (NOT ${BLIB_IGNORE_PCH}))
       target_precompile_headers(${lib${BLIB_LIBNAME}-obj} REUSE_FROM stdlib_pch)
     endif()
 
@@ -80,7 +80,7 @@ function(build_lib)
     # specific path for that
     add_library(${lib${BLIB_LIBNAME}} SHARED "${BLIB_SOURCE_FILES}")
 
-    if(${PRECOMPILE_HEADERS_ENABLED} AND (NOT ${IGNORE_PCH}))
+    if(${PRECOMPILE_HEADERS_ENABLED} AND (NOT ${BLIB_IGNORE_PCH}))
       target_precompile_headers(${lib${BLIB_LIBNAME}} REUSE_FROM stdlib_pch)
     endif()
   endif()
@@ -245,7 +245,7 @@ function(build_lib)
       target_compile_definitions(
         ${test${BLIB_LIBNAME}} PRIVATE NS_TEST_SOURCEDIR="${FOLDER}/test"
       )
-      if(${PRECOMPILE_HEADERS_ENABLED} AND (NOT ${IGNORE_PCH}))
+      if(${PRECOMPILE_HEADERS_ENABLED} AND (NOT ${BLIB_IGNORE_PCH}))
         target_precompile_headers(${test${BLIB_LIBNAME}} REUSE_FROM stdlib_pch)
       endif()
     endif()

build-support/macros-and-definitions.cmake

@@ -1237,23 +1237,23 @@ macro(process_options)
 
   if(${PRECOMPILE_HEADERS_ENABLED})
     set(precompiled_header_libraries
-        <iostream>
-        <stdint.h>
-        <stdlib.h>
-        <map>
-        <unordered_map>
-        <vector>
-        <list>
         <algorithm>
-        <string>
+        <cstdlib>
+        <cstring>
+        <exception>
+        <fstream>
+        <iostream>
+        <limits>
+        <list>
+        <map>
+        <math.h>
         <set>
         <sstream>
-        <fstream>
-        <cstdlib>
-        <exception>
-        <cstring>
-        <limits>
-        <math.h>
+        <stdint.h>
+        <stdlib.h>
+        <string>
+        <unordered_map>
+        <vector>
     )
     add_library(stdlib_pch OBJECT ${PROJECT_SOURCE_DIR}/build-support/empty.cc)
     target_precompile_headers(