From 17c605e07c468e9cc1d795e4770865bb92366822 Mon Sep 17 00:00:00 2001
From: Brad Aagaard <baagaard@usgs.gov>
Date: Tue, 11 Aug 2026 21:53:23 -0600
Subject: [PATCH] FIX: Add configure option to control pip build isolation.

---
 configure.ac            | 8 ++++++++
 spatialdata/Makefile.am | 7 +++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 183db8b..a88d08e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -50,6 +50,14 @@ AC_ARG_ENABLE([scec-cvm-h],
 	[],
 	[enable_scec_cvm_h=no])
 
+dnl pip install with build isolation
+AC_ARG_WITH([build-isolation],
+    [AC_HELP_STRING([--with-build-isolation],
+        [run pip with build-isolation @<:@default=yes@:>@])],
+	[build_isolation=$withval],
+	[build_isolation="yes"])
+AM_CONDITIONAL([PIP_BUILD_ISOLATION], [test "$build_isolation" = yes])
+
 dnl ----------------------------------------------------------------------
 AC_PROG_CXX
 AC_PROG_CC
diff --git a/spatialdata/Makefile.am b/spatialdata/Makefile.am
index 45cccd0..771a1b2 100644
--- a/spatialdata/Makefile.am
+++ b/spatialdata/Makefile.am
@@ -9,9 +9,12 @@
 # See https://mit-license.org/ and LICENSE.md and for license information. 
 # =================================================================================================
 
+if PIP_BUILD_ISOLATION
+else
+PIP_ISOLATION_FLAG=--no-build-isolation
+endif
 install-exec-local:
-	echo $(top_srcdir)
-	$(PYTHON) -m pip install --no-build-isolation --prefix=$(prefix) $(top_srcdir)
+	$(PYTHON) -m pip install --prefix=$(prefix) $(PIP_ISOLATION_FLAG) $(top_srcdir)
 
 EXTRA_DIST = \
 	__init__.py \