BUG: Fix finding PROJ version with PROJ_LIB and PROJ 9.1+

docs/history.rst

@@ -15,6 +15,7 @@ Latest
 - BUG: Add support for `PROJ_DATA` environment variable (issue #1097)
 - BUG: Ensure numpy masked arrays stay masked after projection (issue #1102)
 - BLD: Don't specify runtime_library_dirs on Cygwin (pull #1120)
+- BUG: Fix finding PROJ version with PROJ_LIB and PROJ 9.1+ (issue #1127)
 
 3.3.1
 -------

setup.py

@@ -1,5 +1,6 @@
 import os
 import platform
+import re
 import shutil
 import subprocess
 import sys
@@ -13,6 +14,7 @@
 CURRENT_FILE_PATH = Path(__file__).absolute().parent
 BASE_INTERNAL_PROJ_DIR = Path("proj_dir")
 INTERNAL_PROJ_DIR = CURRENT_FILE_PATH / "pyproj" / BASE_INTERNAL_PROJ_DIR
+PROJ_VERSION_SEARCH = re.compile(r".*Rel\.\s+(?P<version>\d+\.\d+\.\d+).*")
 
 
 def get_proj_version(proj_dir: Path) -> str:
@@ -23,7 +25,13 @@ def get_proj_version(proj_dir: Path) -> str:
     proj_ver = subprocess.check_output(str(proj), stderr=subprocess.STDOUT).decode(
         "ascii"
     )
-    return (proj_ver.split()[1]).strip(",")
+    match = PROJ_VERSION_SEARCH.search(proj_ver)
+    if not match:
+        raise RuntimeError(
+            "PROJ version unable to be determined. "
+            "Please set the PROJ_VERSION environment variable."
+        )
+    return match.groupdict()["version"]
 
 
 def check_proj_version(proj_version: str) -> None: