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-rw-r--r--Makefile.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile.in b/Makefile.in
index 9b1176c..f964e19 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -38,7 +38,7 @@ scripts_dir := $(src_dir)/scripts
HAVE_INT128 := @HAVE_INT128@
HAVE_DLOPEN := @HAVE_DLOPEN@
-HAVE_CLANG_PCH := @HAVE_CLANG_PCH@
+HAVE_CLANG_PCH := $(and @HAVE_CLANG_PCH@, $(if @BOOST_ASIO_LIB@,,yes))
# If the version information is not in the configure script, then we
# assume that we are in a working directory. We use the vcs-version.sh