Fix: configure now also tries "-qopenmp-simd" in case the intel compiler is used.

README.md

@@ -78,6 +78,9 @@ DOCUMENTATION:
 CHANGE LOG:
 -----------
 
+* v3.4.1  (22 Jun 2020)
+	- fix several bugs (segfaults and compilation issues), thanks to 3 reporters.
+
 * v3.4  (10 Jun 2020)
 	- Change in API/ABI (`shtns.h`, `shtns.f03`): removal of `lmidx` array and new `nlat_padded` member
 	  in `shtns_cfg` structure; function names and signatures remain unchanged.

configure

 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for SHTns 3.4.
+# Generated by GNU Autoconf 2.69 for SHTns 3.4.1.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -577,8 +577,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='SHTns'
 PACKAGE_TARNAME='shtns'
-PACKAGE_VERSION='3.4'
-PACKAGE_STRING='SHTns 3.4'
+PACKAGE_VERSION='3.4.1'
+PACKAGE_STRING='SHTns 3.4.1'
 PACKAGE_BUGREPORT=''
 PACKAGE_URL='https://bitbucket.org/nschaeff/shtns'
 
@@ -1253,7 +1253,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures SHTns 3.4 to adapt to many kinds of systems.
+\`configure' configures SHTns 3.4.1 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1314,7 +1314,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of SHTns 3.4:";;
+     short | recursive ) echo "Configuration of SHTns 3.4.1:";;
    esac
   cat <<\_ACEOF
 
@@ -1422,7 +1422,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-SHTns configure 3.4
+SHTns configure 3.4.1
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1879,7 +1879,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by SHTns $as_me 3.4, which was
+It was created by SHTns $as_me 3.4.1, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -3630,6 +3630,35 @@ $as_echo "no" >&6; }
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -qopenmp-simd" >&5
+$as_echo_n "checking whether $CC accepts -qopenmp-simd... " >&6; }
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -qopenmp-simd"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  CFLAGS=$ax_check_save_flags
+     { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+     CFLAGS="$CFLAGS -qopenmp-simd"
+else
+  CFLAGS=$ax_check_save_flags
+     { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+     :
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
 # the following prevents gcc from inserting memset in tight loops for zeroing stuff. Must appear after -O3
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -fno-tree-loop-distribute-patterns" >&5
@@ -5928,7 +5957,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by SHTns $as_me 3.4, which was
+This file was extended by SHTns $as_me 3.4.1, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -5991,7 +6020,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-SHTns config.status 3.4
+SHTns config.status 3.4.1
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 

configure.ac

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.62])
-AC_INIT([SHTns],[3.4],[],[shtns],[https://bitbucket.org/nschaeff/shtns])
+AC_INIT([SHTns],[3.4.1],[],[shtns],[https://bitbucket.org/nschaeff/shtns])
 AC_LANG([C])
 AC_CONFIG_SRCDIR([sht_init.c])
 AC_CONFIG_HEADERS([sht_config.h])
@@ -98,6 +98,7 @@ CFLAGS="$CFLAGS -O3"
 AX_CHECK_COMPILE_FLAG([-ffast-math])
 AX_CHECK_COMPILE_FLAG([-std=gnu99])
 AX_CHECK_COMPILE_FLAG([-fopenmp-simd])
+AX_CHECK_COMPILE_FLAG([-qopenmp-simd])
 # the following prevents gcc from inserting memset in tight loops for zeroing stuff. Must appear after -O3
 AX_CHECK_COMPILE_FLAG([-fno-tree-loop-distribute-patterns])
 # avoid insering VZEROUPPER instructions everywhere.