BLD: set inplace in setup.cfg (#37973)

Dockerfile

@@ -43,5 +43,5 @@ RUN conda env update -n base -f "$pandas_home/environment.yml"
 
 # Build C extensions and pandas
 RUN cd "$pandas_home" \
-    && python setup.py build_ext --inplace -j 4 \
+    && python setup.py build_ext -j 4 \
     && python -m pip install -e .

Makefile

@@ -9,7 +9,7 @@ clean_pyc:
 	-find . -name '*.py[co]' -exec rm {} \;
 
 build: clean_pyc
-	python setup.py build_ext --inplace
+	python setup.py build_ext
 
 lint-diff:
 	git diff upstream/master --name-only -- "*.py" | xargs flake8

azure-pipelines.yml

@@ -40,7 +40,7 @@ jobs:
         . ~/virtualenvs/pandas-dev/bin/activate && \
         python -m pip install --no-deps -U pip wheel setuptools && \
         pip install cython numpy python-dateutil pytz pytest pytest-xdist hypothesis pytest-azurepipelines && \
-        python setup.py build_ext -q -i -j2 && \
+        python setup.py build_ext -q -j2 && \
         python -m pip install --no-build-isolation -e . && \
         pytest -m 'not slow and not network and not clipboard' pandas --junitxml=test-data.xml"
       displayName: 'Run 32-bit manylinux2014 Docker Build / Tests'

ci/azure/windows.yml

@@ -34,7 +34,7 @@ jobs:
     - bash: |
         source activate pandas-dev
         conda list
-        python setup.py build_ext -q -i -j 4
+        python setup.py build_ext -q -j 4
         python -m pip install --no-build-isolation -e .
       displayName: 'Build'
 

ci/setup_env.sh

@@ -131,7 +131,7 @@ conda list pandas
 # Make sure any error below is reported as such
 
 echo "[Build extensions]"
-python setup.py build_ext -q -i -j2
+python setup.py build_ext -q -j2
 
 echo "[Updating pip]"
 python -m pip install --no-deps -U pip wheel setuptools

doc/source/development/contributing.rst

@@ -183,7 +183,7 @@ See https://www.jetbrains.com/help/pycharm/docker.html for details.
 
 Note that you might need to rebuild the C extensions if/when you merge with upstream/master using::
 
-    python setup.py build_ext --inplace -j 4
+    python setup.py build_ext -j 4
 
 .. _contributing.dev_c:
 
@@ -268,7 +268,7 @@ We'll now kick off a three-step process:
    source activate pandas-dev
 
    # Build and install pandas
-   python setup.py build_ext --inplace -j 4
+   python setup.py build_ext -j 4
    python -m pip install -e . --no-build-isolation --no-use-pep517
 
 At this point you should be able to import pandas from your locally built version::
@@ -315,7 +315,7 @@ You'll need to have at least Python 3.6.1 installed on your system.
    python -m pip install -r requirements-dev.txt
 
    # Build and install pandas
-   python setup.py build_ext --inplace -j 4
+   python setup.py build_ext -j 4
    python -m pip install -e . --no-build-isolation --no-use-pep517
 
 **Unix**/**macOS with pyenv**
@@ -339,7 +339,7 @@ Consult the docs for setting up pyenv `here <https://github.com/pyenv/pyenv>`__.
    python -m pip install -r requirements-dev.txt
 
    # Build and install pandas
-   python setup.py build_ext --inplace -j 4
+   python setup.py build_ext -j 4
    python -m pip install -e . --no-build-isolation --no-use-pep517
 
 **Windows**
@@ -365,7 +365,7 @@ should already exist.
    python -m pip install -r requirements-dev.txt
 
    # Build and install pandas
-   python setup.py build_ext --inplace -j 4
+   python setup.py build_ext -j 4
    python -m pip install -e . --no-build-isolation --no-use-pep517
 
 Creating a branch

pandas/__init__.py

@@ -33,7 +33,7 @@
     raise ImportError(
         f"C extension: {module} not built. If you want to import "
         "pandas from the source directory, you may need to run "
-        "'python setup.py build_ext --inplace --force' to build the C extensions first."
+        "'python setup.py build_ext --force' to build the C extensions first."
     ) from e
 
 from pandas._config import (

setup.cfg

@@ -1,4 +1,7 @@
 
+[build_ext]
+inplace = 1
+
 # See the docstring in versioneer.py for instructions. Note that you must
 # re-run 'versioneer.py setup' after changing this section, and commit the
 # resulting files.