ELPA_development_version_qr: Abort in configure step if no kernel set

ELPA_development_version_qr/Makefile.am

@@ -146,9 +146,9 @@ endif
 endif
 
 if WITH_OPENMP
-libelpa_la_LDFLAGS = -version-info $(ELPA_SO_VERSION)
-else
 libelpa_mt_la_LDFLAGS = -version-info $(ELPA_SO_VERSION)
+else
+libelpa_la_LDFLAGS = -version-info $(ELPA_SO_VERSION)
 endif
 
 # install any .mod files in the include/ dir

ELPA_development_version_qr/Makefile.in

@@ -881,8 +881,8 @@ ACLOCAL_AMFLAGS = ${ACLOCAL_FLAGS} -I m4
 @WITH_OPENMP_FALSE@@WITH_QR_TRUE@	$(am__append_20) \
 @WITH_OPENMP_FALSE@@WITH_QR_TRUE@	$(am__append_22) \
 @WITH_OPENMP_FALSE@@WITH_QR_TRUE@	$(am__append_24)
-@WITH_OPENMP_TRUE@libelpa_la_LDFLAGS = -version-info $(ELPA_SO_VERSION)
-@WITH_OPENMP_FALSE@libelpa_mt_la_LDFLAGS = -version-info $(ELPA_SO_VERSION)
+@WITH_OPENMP_TRUE@libelpa_mt_la_LDFLAGS = -version-info $(ELPA_SO_VERSION)
+@WITH_OPENMP_FALSE@libelpa_la_LDFLAGS = -version-info $(ELPA_SO_VERSION)
 
 # install any .mod files in the include/ dir
 elpa_includedir = $(includedir)/elpa

ELPA_development_version_qr/configure

@@ -4931,6 +4931,8 @@ fi
 
 
 
+ELPA_KERNEL_SET=no
+
 
 
 
@@ -4958,6 +4960,7 @@ fi
 
 $as_echo "#define WITH_GENERIC 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_GENERIC], [0], [use generic kernel for all architectures (with some hand-coded optimizations)])
   fi
@@ -4988,6 +4991,7 @@ fi
 
 $as_echo "#define WITH_GENERIC_SIMPLE 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_GENERIC_SIMPLE], [0], [use generic simple kernel for all architectures (without any hand-coded optimizations)])
   fi
@@ -5018,6 +5022,7 @@ fi
 
 $as_echo "#define WITH_BGP 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_BGP], [0], [use optimized kernel for IBM BG/P])
   fi
@@ -5048,6 +5053,7 @@ fi
 
 $as_echo "#define WITH_BGQ 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_BGQ], [0], [use optimized kernel for IBM BG/Q])
   fi
@@ -5078,6 +5084,7 @@ fi
 
 $as_echo "#define WITH_SSE_AS 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_SSE_AS], [0], [use kernel tuned for SSE (written in gcc assembler)])
   fi
@@ -5108,6 +5115,7 @@ fi
 
 $as_echo "#define WITH_AVX_SANDYBRIDGE 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_AVX_SANDYBRIDGE], [0], [use kernel tuned for AVX on Intel Sandybridge (written in gcc assembler)])
   fi
@@ -5138,6 +5146,7 @@ fi
 
 $as_echo "#define WITH_AMD_BULLDOZER 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_AMD_BULLDOZER], [0], [use kernel tuned for AVX on AMD Bulldozer (written in gcc assembler)])
   fi
@@ -5168,6 +5177,7 @@ fi
 
 $as_echo "#define WITH_AVX_COMPLEX_BLOCK1 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_AVX_COMPLEX_BLOCK1], [0], [use AVX optimized complex kernel with blocking 1 (written in gcc assembler)])
   fi
@@ -5198,6 +5208,7 @@ fi
 
 $as_echo "#define WITH_AVX_COMPLEX_BLOCK2 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_AVX_COMPLEX_BLOCK2], [0], [use AVX optimized complex kernel with blocking 2 (written in gcc assembler)])
   fi
@@ -5228,6 +5239,7 @@ fi
 
 $as_echo "#define WITH_AVX_REAL_BLOCK2 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_AVX_REAL_BLOCK2], [0], [use AVX optimized real kernel with blocking 2 (written in gcc assembler)])
   fi
@@ -5258,6 +5270,7 @@ fi
 
 $as_echo "#define WITH_AVX_REAL_BLOCK4 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_AVX_REAL_BLOCK4], [0], [use AVX optimized real kernel with blocking 4 (written in gcc assembler)])
   fi
@@ -5288,11 +5301,20 @@ fi
 
 $as_echo "#define WITH_AVX_REAL_BLOCK6 1" >>confdefs.h
 
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([WITH_AVX_REAL_BLOCK6], [0], [use AVX optimized real kernel with blocking 6 (written in gcc assembler)])
   fi
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the user defined an ELPA kernel" >&5
+$as_echo_n "checking whether the user defined an ELPA kernel... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${with_option}" >&5
+$as_echo "${with_option}" >&6; }
+if test "x${ELPA_KERNEL_SET}" = xno; then
+   as_fn_error $? "no ELPA kernel choosen by user! Please look at the manual! Aborting..." "$LINENO" 5
+fi
+
 
 if test "x${with_avx_sandybridge}" = xyes; then
   check_avx_compilation=yes

ELPA_development_version_qr/configure.ac

@@ -28,6 +28,9 @@ AM_PROG_AR
 AM_PROG_AS
 AC_PROG_CXX
 
+dnl necessary for later checking
+ELPA_KERNEL_SET=no
+
 dnl  macro for an --with-$2 switch that sets the
 dnl  preprocessor define $1, with description $3, default $4, possible values $5
 AC_DEFUN([DEFINE_OPTION],[
@@ -41,6 +44,7 @@ AC_DEFUN([DEFINE_OPTION],[
   AM_CONDITIONAL([$1],[test x"$with_option" = x"yes"])
   if test "x${with_option}" = xyes; then
 	AC_DEFINE([$1], [1], [$3])
+        ELPA_KERNEL_SET=yes
 #  elif test "x${with_option}" = xno; then
 #	AC_DEFINE([$1], [0], [$3])
   fi
@@ -94,6 +98,13 @@ DEFINE_OPTION([WITH_AVX_REAL_BLOCK6], [avx-real-block6],
 	      [use AVX optimized real kernel with blocking 6 (written in gcc assembler)],
 	      [no],[])
 
+dnl check whether any kernel was specified
+AC_MSG_CHECKING(whether the user defined an ELPA kernel)
+AC_MSG_RESULT([${with_option}])
+if test "x${ELPA_KERNEL_SET}" = xno; then
+   AC_MSG_ERROR(no ELPA kernel choosen by user! Please look at the manual! Aborting...)
+fi
+
 
 dnl check whether we better check if AVX compilation should work
 if test "x${with_avx_sandybridge}" = xyes; then