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authorTyler Reddy <tyler.je.reddy@gmail.com>2019-01-17 08:42:42 -0800
committerTyler Reddy <tyler.je.reddy@gmail.com>2019-01-18 09:19:33 -0800
commit189f007f5178c52e68d3acddd6f8545a82eb71d0 (patch)
treed62c6c7f075d8fd63f22cb1d887e464a465d23c1 /doc
parent5b22ee427e17706e3b765cf6c65e924d89f3bfce (diff)
downloadnumpy-189f007f5178c52e68d3acddd6f8545a82eb71d0.tar.gz
DOC: document C99 requirement in dev guide [ci skip]
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-rw-r--r--doc/source/dev/development_environment.rst4
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/source/dev/development_environment.rst b/doc/source/dev/development_environment.rst
index aa4326f63..f9b438bfd 100644
--- a/doc/source/dev/development_environment.rst
+++ b/doc/source/dev/development_environment.rst
@@ -8,7 +8,9 @@ Recommended development setup
Since NumPy contains parts written in C and Cython that need to be
compiled before use, make sure you have the necessary compilers and Python
-development headers installed - see :ref:`building-from-source`.
+development headers installed - see :ref:`building-from-source`. Building
+NumPy as of version ``1.17`` requires a C99 compliant compiler. For
+some older compilers this may require ``export CFLAGS='-std=c99'``.
Having compiled code also means that importing NumPy from the development
sources needs some additional steps, which are explained below. For the rest