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-rw-r--r--libcrystfel/CMakeLists.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/libcrystfel/CMakeLists.txt b/libcrystfel/CMakeLists.txt
index 87b621b0..9f79b0c4 100644
--- a/libcrystfel/CMakeLists.txt
+++ b/libcrystfel/CMakeLists.txt
@@ -16,6 +16,11 @@ set(HAVE_XGANDALF ${XGANDALF_FOUND})
set(HAVE_PINKINDEXER ${PINKINDEXER_FOUND})
set(HAVE_FDIP ${FDIP_FOUND})
+# Recent enough version of zlib?
+set(CMAKE_REQUIRED_LIBRARIES "-lz")
+check_symbol_exists(gzbuffer "zlib.h" HAVE_GZBUFFER)
+unset(CMAKE_REQUIRED_LIBRARIES)
+
# Find out where forkpty() is declared
set(CMAKE_REQUIRED_LIBRARIES "-lutil")
check_symbol_exists(forkpty "pty.h" HAVE_FORKPTY_PTY_H)