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authorwarren <warren.weckesser@gmail.com>2021-09-27 19:40:42 -0400
committerwarren <warren.weckesser@gmail.com>2021-09-27 19:40:42 -0400
commitb8eaf4136e4b991bf02dfaf27616106ebc170e1c (patch)
tree29c8ce4d5cfbbda11491d296a37c58f3b6115d05
parent00dce9825baa3184d26a3f5f56beed67809aef87 (diff)
downloadnumpy-b8eaf4136e4b991bf02dfaf27616106ebc170e1c.tar.gz
DOC: Specifically mention the C99 requirement in 'Building from source'
-rw-r--r--doc/source/user/building.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/source/user/building.rst b/doc/source/user/building.rst
index 10983ce8f..22efca4a6 100644
--- a/doc/source/user/building.rst
+++ b/doc/source/user/building.rst
@@ -45,6 +45,9 @@ Building NumPy requires the following software installed:
2) Compilers
+ Much of NumPy is written in C. You will need a C compiler that complies
+ with the C99 standard.
+
While a FORTRAN 77 compiler is not necessary for building NumPy, it is
needed to run the ``numpy.f2py`` tests. These tests are skipped if the
compiler is not auto-detected.