# ES Source code compilation

**URL:** <https://discuss.elastic.co/t/es-source-code-compilation/303137>\
**Category:** Elasticsearch\
**Created:** [April 25, 2022, 9:29am UTC](https://discuss.elastic.co/t/es-source-code-compilation/303137 "2022-04-25T09:29:36Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![casterQ](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/casterq/32/93257_2.png) [@casterQ](https://discuss.elastic.co/u/casterQ)\
**Post date:** [April 25, 2022, 9:29am UTC](https://discuss.elastic.co/t/es-source-code-compilation/303137/1 "2022-04-25T09:29:36Z")

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Should the parameter be specified with `- E` or `- D`?  
When i used `-D` like this ：`-Des.path.conf=/Users/caster/Desktop/elasticsearch-7.10.2-demo/config`，i got: `ERROR: D is not a recognized option`

When i used `-E` like this ：`-Ees.path.conf=/Users/caster/Desktop/elasticsearch-7.10.2-demo/config`，i got：`ERROR: the system property [es.path.conf] must be set`

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**Author:** ![casterQ](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/casterq/32/93257_2.png) [@casterQ](https://discuss.elastic.co/u/casterQ)\
**Post date:** [April 25, 2022, 9:30am UTC](https://discuss.elastic.co/t/es-source-code-compilation/303137/2 "2022-04-25T09:30:53Z")

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Must I use - d here?

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/7/d/7d9e382c13d161687c35d1b6555bdf0c60586dbc.png)

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<div class="post-metadata">

**Author:** ![casterQ](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/casterq/32/93257_2.png) [@casterQ](https://discuss.elastic.co/u/casterQ)\
**Post date:** [April 26, 2022, 9:24am UTC](https://discuss.elastic.co/t/es-source-code-compilation/303137/3 "2022-04-26T09:24:16Z")

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Looking forward to the answer

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**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\
**Post date:** [April 27, 2022, 8:26am UTC](https://discuss.elastic.co/t/es-source-code-compilation/303137/4 "2022-04-27T08:26:50Z")

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This is not enough information to help.

Please share the whole process of source code building you did including the whole command line you did to start Elasticsearch as well as complete error messages as properly formatted **text snippets** instead of images.

Thanks!

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 25, 2022, 8:27am UTC](https://discuss.elastic.co/t/es-source-code-compilation/303137/5 "2022-05-25T08:27:39Z")

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