Merge branch 'doc/eclipse_parallel_build' into 'master'

doc: Add parallel builds to the Eclipse setup guide

See merge request idf/esp-idf!3209

docs/en/get-started/eclipse-setup-windows.rst

@@ -67,6 +67,12 @@ Navigate to "C/C++ General" -> "Indexer" property page:
 
 * Uncheck "Allow heuristic resolution of includes". When this option is enabled Eclipse sometimes fails to find correct header directories.
 
+Navigate to "C/C++ Build" -> "Behavior" property page:
+
+* Check "Enable parallel build" to enable multiple build jobs in parallel.
+
+* Setting the number of jobs slightly higher than the "optimal" may give the absolute fastest builds under Windows, depending on the specific hardware being used.
+
 Building in Eclipse
 -------------------
 

docs/en/get-started/eclipse-setup.rst

@@ -69,6 +69,10 @@ Navigate to "C/C++ General" -> "Indexer" property page:
 
 * Uncheck "Allow heuristic resolution of includes". When this option is enabled Eclipse sometimes fails to find correct header directories.
 
+Navigate to "C/C++ Build" -> "Behavior" property page:
+
+* Check "Enable parallel build" to enable multiple build jobs in parallel.
+
 .. _eclipse-build-project:
 
 Building in Eclipse

docs/zh_CN/get-started/eclipse-setup-windows.rst

@@ -71,6 +71,12 @@ Windows 平台上的 Eclipse 配置
 
     取消选中 “Allow heuristic resolution of includes”。因为启用此选项时，有时会导致 Eclipse 无法找到正确的头文件目录。
 
+点击 “C/C++ Build” -> “Behavior” 属性页。
+
+* 选中 “Enable parallel build” 以启用多任务并行构建。
+
+* 将作业数设置为略高于“最佳”的推荐值，能够使得在 Windows 下的构建速度达到最快，不过这还要取决于您具体使用的硬件的配置。
+
 在 Eclipse IDE 中创建项目
 ---------------------------
 

docs/zh_CN/get-started/eclipse-setup.rst

@@ -75,6 +75,10 @@ Windows 用户
 
     取消选中 “Allow heuristic resolution of includes”。因为启用此选项时，有时会导致 Eclipse 无法找到正确的头文件目录。
 
+点击 “C/C++ Build” -> “Behavior” 属性页。
+
+* 选中 “Enable parallel build” 以启用多任务并行构建。
+
 .. _eclipse-build-project:
 
 在 Eclipse IDE 中创建项目