Add build script

.github/prepare_conda_build.py

@@ -37,8 +37,16 @@ def _run_parser(*args):
         *args,
     ]
     cmd = [str(x) for x in cmd]
-    print(" + " + shlex.join(cmd))
-    proc = subprocess.run(cmd, capture_output=True, check=True, text=True)
+    try:
+        proc = subprocess.run(
+            cmd, check=True, text=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT
+        )
+    except subprocess.CalledProcessError as p:
+        print("Error getting dependencies " + " ".join(args) + ":")
+        print(" + " + shlex.join(cmd))
+        print(p.stdout)
+        sys.exit(1)
+
     return proc.stdout
 
 

build.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+if [[ $CONDA_TOOLCHAIN_BUILD != $CONDA_TOOLCHAIN_HOST ]]; then
+    # Conda does some swizzling when cross compiling, including moving
+    # the site-packages folder to the build prefix. So let's just
+    # manually add this to the compiler search path.
+    CFLAGS="-isystem $BUILD_PREFIX/lib/python$PY_VER/site-packages $CXXFLAGS"
+    CXXFLAGS="-isystem $BUILD_PREFIX/lib/python$PY_VER/site-packages $CXXFLAGS"
+fi
+
+mkdir _build
+cd _build
+cmake ${CMAKE_ARGS} ../dxtbx "-DCMAKE_INSTALL_PREFIX=$PREFIX" "-DPython_EXECUTABLE=$PYTHON" -GNinja
+cmake --build .
+cmake --install .
+$PYTHON -mpip install ../dxtbx