Added support for the icx Intel compiler.

INSTALL

@@ -83,18 +83,19 @@ locations:
    $ ./configure
 
 Compared to "gcc" and the librairies above, the combination of the
-Intel compiler ("icc") and the MKL (Math Kernel Library) libraries
-can give the PSFEx executable a strong boost in performance,
-thanks to better vectorized code. If "icc" and the MKL (Math Kernel
-Library) are installed on your system [4] , you can take advantage of
-those using instead
+Intel compiler ("icc" or "icx") and the MKL (Math Kernel Library)
+libraries can give the PSFEx executable a significant boost in
+performance, thanks to better vectorized code, and reduced memory
+usage. If "icc" (or "icx") and the MKL (Math Kernel Library) are
+installed on your system [4], you can take advantage of those using
+instead
 
    $ ./configure --enable-mkl
 
 Additionally, if the PSFEx binary is to be run on a different
-machine that does not have "icc" and the MKL (Math Kernel Library)
-installed (e.g., a cluster computing node), you must configure a
-partially statically linked executable using
+machine that does not have "icc" (or "icx") and the MKL installed
+(e.g., a cluster computing node), you must configure a partially
+statically linked executable using
 
    $ ./configure --enable-mkl --enable-auto-flags --enable-best-link
 
@@ -126,6 +127,5 @@ path).
     options "--enable-threads --enable-float".
 
 [4] The Linux versions of the Intel compiler and MKL (Math
-    Kernel Library) are available for free to academic researchers,
-    students, educators and open source contributors.
+    Kernel Library) are now available for free on Intel's website.
 

configure.ac

@@ -22,7 +22,7 @@
 #	You should have received a copy of the GNU General Public License
 #	along with PSFEx.  If not, see <http://www.gnu.org/licenses/>.
 #
-#	Last modified:		12/01/2022
+#	Last modified:		20/09/2022
 #
 #%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
@@ -31,7 +31,7 @@ define([AC_CACHE_LOAD],)
 define([AC_CACHE_SAVE],)
 
 # This is your standard AstrOmatic source code...
-AC_INIT(PSFEx, 3.23.0, [[email protected]],
+AC_INIT(PSFEx, 3.24.0, [[email protected]],
 	psfex, [http://astromatic.net/software/psfex])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR(autoconf)
@@ -80,24 +80,38 @@ AC_ARG_ENABLE(auto-flags,
 	AC_MSG_RESULT([yes]),
 	AC_MSG_RESULT([no]))
 
-# Provide special option for the Linux Intel C compiler
-AC_MSG_CHECKING([whether the INTEL compiler is enabled])
+# Provide special option for the Linux Intel C "classic" compiler
+AC_MSG_CHECKING([whether the classic INTEL compiler is enabled])
 AC_ARG_ENABLE(icc,
 	[AS_HELP_STRING([--enable-icc],
 	[Use the Intel compiler (default = no)])],
         CC="icc"
+        enable_iccx="yes"
+	AC_MSG_RESULT([yes]),
+	AC_MSG_RESULT([no]))
+
+# Provide special option for the Linux Intel OneAPI C compiler
+AC_MSG_CHECKING([whether the INTEL compiler is enabled])
+AC_ARG_ENABLE(icx,
+	[AS_HELP_STRING([--enable-icx],
+	[Use the Intel compiler (default = no)])],
+        CC="icx"
+        enable_iccx="yes"
 	AC_MSG_RESULT([yes]),
 	AC_MSG_RESULT([no]))
 
 # Provide special options for INTEL MKL
-# We force the use of icc
+# We use icc if available, if not Intel OneAPI's icx
+# (we don't use AC_PROG_CC as it does not play nice
+# in a conditional block)
 AC_MSG_CHECKING([whether INTEL's MKL is enabled])
 AC_ARG_ENABLE(mkl,
 	[AS_HELP_STRING([--enable-mkl],
 	[Use INTEL's MKL for solvers and FFTs (default = no)])],
-        enable_icc="yes"
-        CC="icc"
-	AC_MSG_RESULT([yes]),
+	    AC_MSG_RESULT([yes])
+        CC=""
+        [AC_CHECK_PROGS(CC, [icc icx cc])]
+        enable_iccx="yes",
 	AC_MSG_RESULT([no]))
 
 # Checks for programs.
@@ -116,10 +130,10 @@ AC_PROG_INSTALL
 AC_CHECK_LIB(m, sin)
 
 # Checks for header files.
-AC_HEADER_STDC
 AC_CHECK_HEADERS([dlfcn.h fcntl.h limits.h malloc.h stdlib.h string.h \
 		sys/mman.h sys/types.h unistd.h])
-if test "$enable_icc" = "yes"; then
+# Checks for INTEL math header files.
+if test "$enable_iccx" = "yes"; then
   AC_CHECK_HEADERS(mathimf.h)
 fi
 
@@ -154,8 +168,8 @@ AC_ARG_WITH(atlas-libdir,
 	[AS_HELP_STRING([--with-atlas-libdir=<ATLAS library path>],
 	[Provide an alternative path to the ATLAS library])])
 AC_ARG_WITH(atlas-incdir,
-	[AS_HELP_STRING([--with-atlas-incdir=<ATLAS header dir>],
-	[Provide an alternative path to the ATLAS header directory])])
+	[AS_HELP_STRING([--with-atlas-incdir=<ATLAS include dir>],
+	[Provide an alternative path to the ATLAS include directory])])
 
 # Provide special options for FFTW
 AC_ARG_WITH(fftw-libdir,
@@ -227,7 +241,7 @@ AC_ARG_ENABLE(threads,
 AC_MSG_CHECKING([for profiler mode])
 AC_ARG_ENABLE(profiling,
 	[AS_HELP_STRING([--enable-profiling],
-	[Enable special mode for profiling (default = no)])]
+	[Enable special mode for profiling (default = no)])],
 	AC_MSG_RESULT([yes]),
 	AC_MSG_RESULT([no]))
 
@@ -250,19 +264,15 @@ if test "$use_pthreads" = "yes"; then
   ACX_PTHREAD
   CC="$PTHREAD_CC"
   [AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS -D_REENTRANT"]
-  LIBS="$PTHREAD_LIBS $LIBS"
+  LIBS="$LIBS $PTHREAD_LIBS"
 fi
 AM_CONDITIONAL(USE_THREADS, test $use_pthreads = "yes")
 
 ############ handle the INTEL MKL library (FFTW + LAPACKe) ###########
 if test "$enable_mkl" = "yes"; then
   convlibs="${srcdir}/../src/wcs/libwcs_c.a,${srcdir}/../src/levmar/liblevmar.a"
   ACX_MKL($with_mkl_dir,no,$enable_best_link,$convlibs)
-  AC_MSG_CHECKING([for the INTEL MKL])
-  if test "$MKL_WARN" == ""; then
-    AC_MSG_RESULT([yes])
-  else
-    AC_MSG_RESULT([no])
+  if test "$MKL_WARN" != ""; then
     AC_MSG_WARN([$MKL_WARN])
   fi
   AM_CFLAGS="$AM_CFLAGS $MKL_CFLAGS "
@@ -323,7 +333,7 @@ AM_CONDITIONAL(USE_PLPLOT, test "$use_plplot" = "yes")
 
 # Compile with profiling option
 if test "$enable_profiling" = "yes"; then
-  if test "$enable_icc" = "yes"; then
+  if test "$enable_iccx" = "yes"; then
     AM_CFLAGS="$AM_CFLAGS -pq"
   else
     AM_CFLAGS="$AM_CFLAGS -pg"
@@ -333,9 +343,9 @@ fi
 
 # "Best" linking option
 if test "$enable_best_link" = "yes"; then
-  if test "$enable_icc" = "yes"; then
-    AM_LDFLAGS="-static-intel -qopenmp-link static -shared-libgcc \
-	-static-libtool-libs -no-intel-extensions -avoid-version $AM_LDFLAGS"
+  if test "$enable_iccx" = "yes"; then
+    AM_LDFLAGS="-static-intel -qopenmp-link=static -shared-libgcc \
+	-static-libtool-libs -avoid-version $AM_LDFLAGS"
   else
     AM_LDFLAGS="-shared-libgcc -static-libtool-libs -avoid-version $AM_LDFLAGS"
   fi

debian/rules

@@ -15,7 +15,7 @@ ifeq ($(USE_BEST),1)
 	dh_auto_configure -- --host=$(DEB_HOST_GNU_TYPE) \
 			--build=$(DEB_BUILD_GNU_TYPE) \
 			--prefix=/usr --mandir=\$${prefix}/share/man \
-			--enable-icc --enable-mkl \
+			--enable-icx --enable-mkl \
 			--enable-auto-flags --enable-best-link \
 			--with-release=$(PACKAGE_RELEASE)
 else

doc/src/conf.py

@@ -63,9 +63,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '3.23.0'
+version = '3.24.0'
 # The full version, including alpha/beta/rc tags.
-release = '3.23.0'
+release = '3.24.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -76,7 +76,7 @@
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:
-today = 'Thu Jan 13 2022'
+today = 'Tue Sep 20 2022'
 # Else, today_fmt is used as the format for a strftime call.
 #today_fmt = '%B %d, %Y'
 

m4/acx_mkl.m4

@@ -7,7 +7,7 @@ dnl %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 dnl
 dnl	This file part of:	AstrOmatic software
 dnl
-dnl	Copyright:		(C) 2003-2016 IAP/CNRS/UPMC
+dnl	Copyright:		(C) 2003-2022 IAP/CNRS/SorbonneU
 dnl
 dnl	License:		GNU General Public License
 dnl
@@ -23,7 +23,7 @@ dnl	You should have received a copy of the GNU General Public License
 dnl	along with AstrOmatic software.
 dnl	If not, see <http://www.gnu.org/licenses/>.
 dnl
-dnl	Last modified:		16/03/2016
+dnl	Last modified:		15/09/2022
 dnl
 dnl %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 dnl
@@ -73,11 +73,11 @@ dnl Set architecture flags
 dnl ----------------------
 
 dnl check if INTEL compiler is present
-icc -V 2>&1 | grep -i "Intel" > /dev/null 2>&1 && flagicc=yes
+$CC -V 2>&1 | grep -i "Intel" > /dev/null 2>&1 && flagicc=yes
 dnl check if INTEL compiler uses x86_64 architecture
-icc -V 2>&1 | grep -i "Intel(R) 64" > /dev/null 2>&1 && flag64=yes
+$CC -V 2>&1 | grep -i "Intel(R) 64" > /dev/null 2>&1 && flag64=yes
 dnl check if the platform is OSX
-icc -dumpmachine 2>&1 | grep -i "darwin" > /dev/null 2>&1 && flagosx=yes
+$CC -dumpmachine 2>&1 | grep -i "darwin" > /dev/null 2>&1 && flagosx=yes
 
 dnl ----------------------
 dnl Exit if INTEL compiler is not found

m4/acx_prog_cc_optim.m4

@@ -7,7 +7,7 @@ dnl %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 dnl
 dnl	This file part of:	AstrOmatic software
 dnl
-dnl	Copyright:		(C) 2002-2013 Emmanuel Bertin -- IAP/CNRS/UPMC
+dnl	Copyright:		(C) 2002-2022 Emmanuel Bertin -- IAP/CNRS/SorbonneU
 dnl				(C) 2002 Ville Lauriki (original version)
 dnl
 dnl	Licenses:		GPL (this version)
@@ -25,7 +25,7 @@ dnl	You should have received a copy of the GNU General Public License
 dnl	along with AstrOmatic software.
 dnl	If not, see <http://www.gnu.org/licenses/>.
 dnl
-dnl	Last modified:		13/03/2013
+dnl	Last modified:		07/09/2022
 dnl
 dnl %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 dnl
@@ -60,14 +60,14 @@ EOF
       if $CC -V 2>&1 | grep -i "Intel(R) 64" > /dev/null 2>&1 &&
            $CC -c -O conftest.c > /dev/null 2>&1 &&
            test -f conftest.o; then
-        prog_cc_optim_cv_flags="-O3 -axSSSE3,SSE4.1,SSE4.2,AVX,CORE-AVX2,CORE-AVX-I -no-prec-div -unroll"
+        prog_cc_optim_cv_flags="-O3 -axSSSE3,SSE4.1,SSE4.2,AVX,CORE-AVX2,CORE-AVX-I"
         prog_ld_optim_cv_flags=""
 
       dnl INTEL C 32bits compiler
       elif $CC -V 2>&1 | grep -i "Intel(R)" > /dev/null 2>&1 &&
            $CC -c -O conftest.c > /dev/null 2>&1 &&
            test -f conftest.o; then
-        prog_cc_optim_cv_flags="-O3 -axSSE2,SSE3,SSE4.1,SSE4.2,AVX,CORE-AVX2,CORE-AVX-I -no-prec-div -unroll"
+        prog_cc_optim_cv_flags="-O3 -axSSE2,SSE3,SSE4.1,SSE4.2,AVX,CORE-AVX2,CORE-AVX-I"
         prog_ld_optim_cv_flags=""
 
       dnl GCC