Get FFTW version

src/common_io.c

@@ -314,6 +314,9 @@ void writeCodeDescription(hid_t h_file) {
   writeAttribute_s(h_grpcode, "Git Branch", git_branch());
   writeAttribute_s(h_grpcode, "Git Revision", git_revision());
   writeAttribute_s(h_grpcode, "HDF5 library version", hdf5_version());
+#ifdef HAVE_FFTW
+  writeAttribute_s(h_grpcode, "FFTW library version", fftw3_version());
+#endif
 #ifdef WITH_MPI
   writeAttribute_s(h_grpcode, "MPI library", mpi_version());
 #ifdef HAVE_METIS

src/version.c

@@ -33,6 +33,10 @@
 #include <hdf5.h>
 #endif
 
+#ifdef HAVE_FFTW
+#include <fftw.h>
+#endif
+
 /* Some standard headers. */
 #include <stdio.h>
 #include <string.h>
@@ -238,6 +242,22 @@ const char *metis_version(void) {
   return version;
 }
 
+/**
+ * @brief return the FFTW version used when SWIFT was built.
+ *
+ * @result description of the FFTW version.
+ */
+const char *fftw3_version(void) {
+
+  static char version[256] = {0};
+#if defined(HAVE_FFTW)
+  sprintf(version, "%s", "3.x (details not available)");
+#else
+  sprintf(version, "Unknown version");
+#endif
+  return version;
+}
+
 /**
  * @brief Prints a greeting message to the standard output containing code
  * version and revision number
@@ -259,6 +279,9 @@ void greetings(void) {
 #ifdef HAVE_HDF5
   printf(" HDF5 library version: %s\n", hdf5_version());
 #endif
+#ifdef HAVE_FFTW
+  printf(" FFTW library version: %s\n", fftw3_version());
+#endif
 #ifdef WITH_MPI
   printf(" MPI library: %s\n", mpi_version());
 #ifdef HAVE_METIS

src/version.h

@@ -27,8 +27,9 @@ const char* git_branch(void);
 const char* compiler_name(void);
 const char* compiler_version(void);
 const char* mpi_version(void);
-const char* hdf5_version(void);
 const char* metis_version(void);
+const char* hdf5_version(void);
+const char* fftw3_version(void);
 void greetings(void);
 
 #endif /* SWIFT_VERSION_H */