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-rw-r--r--configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 4d94592..172d43c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -79,7 +79,7 @@ AC_ARG_ENABLE([output_uhd],
[AS_HELP_STRING([--disable-output-uhd], [Disable UHD output])],
[], [enable_output_uhd=yes])
-PKG_CHECK_MODULES([FFTW], [fftw3f], enable_fftw=yes, enable_fftw=no)
+PKG_CHECK_MODULES([FFTW], [fftw3f], [], [AC_MSG_ERROR([FFTW is required])])
echo "Checking zeromq"