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-rw-r--r--configure.ac5
1 files changed, 5 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 9dd0acd86..99248b90c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -209,6 +209,11 @@ PKG_CHECK_MODULES([LIBLZMA], [liblzma], [CXXFLAGS="$LIBLZMA_CFLAGS $CXXFLAGS"])
AC_CHECK_LIB([lzma], [lzma_stream_encoder_mt],
[AC_DEFINE([HAVE_LZMA_MT], [1], [xz multithreaded compression support])])
+# Look for zlib, a required dependency.
+PKG_CHECK_MODULES([ZLIB], [zlib], [CXXFLAGS="$ZLIB_CFLAGS $CXXFLAGS"])
+AC_CHECK_HEADER([zlib.h],[:],[AC_MSG_ERROR([could not find the zlib.h header])])
+LDFLAGS="-lz $LDFLAGS"
+
# Look for libbrotli{enc,dec}.
PKG_CHECK_MODULES([LIBBROTLI], [libbrotlienc libbrotlidec], [CXXFLAGS="$LIBBROTLI_CFLAGS $CXXFLAGS"])