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README.md: add compile details when using long long type

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No Default Name 2022-05-24 21:42:03 +02:00
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@ -555,7 +555,13 @@ While the JSON standard only specifies floating point numbers, cJSON also suppor
cJSON number items can be accessed using either the floating point or the integer function calls. Especially **writing** to the `valuedouble` or `valueint` members is deprecated, since writing to either one will not update the other, and will not update the integer representation flag. cJSON number items can be accessed using either the floating point or the integer function calls. Especially **writing** to the `valuedouble` or `valueint` members is deprecated, since writing to either one will not update the other, and will not update the integer representation flag.
The integer type defaults to `int`, and can be switched to `long long` by defining `CJSON_INT_USE_LONGLONG` in `cJSON.h`. The integer type defaults to `int`, and can be switched to `long long` by defining `CJSON_INT_USE_LONGLONG` in `cJSON.h`. Since `long long` is not a C89 data type, a default cmake compile will fail. Either remove `-std=c89` from `CMakeLists.txt`, or force compiler flags e.g.:
```
mkdir build
cd build
CFLAGS="-Wall -Werror" cmake -DENABLE_CUSTOM_COMPILER_FLAGS=Off ..
```
#### Deep Nesting Of Arrays And Objects #### Deep Nesting Of Arrays And Objects