FFTW: remove search for IBM XL threaded compiler when compiler is not gcc (#4187)

* Added magma package

* Incorporated Serban's change

* fftw: patch configuration file to remove search for xlc_r compiler
when compiler not gcc

FFTW assumes there are only 2 compilers: gcc and IBM XL.  When
building threaded fftw, the configuration file is looking for
the threaded IBM XL's xlc_r compiler when the compiler is not gcc.
The PGI compiler is not gcc.

2 files changed, 122 insertions, 0 deletions

diff --git a/var/spack/repos/builtin/packages/fftw/package.py b/var/spack/repos/builtin/packages/fftw/package.py
index 062b0a0eb0..ce45409581 100644
--- a/var/spack/repos/builtin/packages/fftw/package.py
+++ b/var/spack/repos/builtin/packages/fftw/package.py
@@ -44,6 +44,7 @@ class Fftw(AutotoolsPackage):
 
     patch('pfft-3.3.5.patch', when="@3.3.5:+pfft_patches", level=0)
     patch('pfft-3.3.4.patch', when="@3.3.4+pfft_patches", level=0)
+    patch('pgi-3.3.6-pl2.patch', when="@3.3.6-pl2%pgi", level=0)
 
     variant(
         'float', default=True,
diff --git a/var/spack/repos/builtin/packages/fftw/pgi-3.3.6-pl2.patch b/var/spack/repos/builtin/packages/fftw/pgi-3.3.6-pl2.patch
new file mode 100644
index 0000000000..1822db1231
--- /dev/null
+++ b/var/spack/repos/builtin/packages/fftw/pgi-3.3.6-pl2.patch
@@ -0,0 +1,121 @@
+--- configure	2017-01-27 16:08:52.000000000 -0500
++++ configure	2017-05-08 22:34:32.358821182 -0400
+@@ -21744,117 +21744,7 @@
+ 
+ # Various other checks:
+ if test "x$acx_pthread_ok" = xyes; then
+-        save_LIBS="$LIBS"
+-        LIBS="$PTHREAD_LIBS $LIBS"
+-        save_CFLAGS="$CFLAGS"
+-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+-
+-        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
+-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for joinable pthread attribute" >&5
+-$as_echo_n "checking for joinable pthread attribute... " >&6; }
+-	attr_name=unknown
+-	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+-	    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+-/* end confdefs.h.  */
+-#include <pthread.h>
+-#ifdef F77_DUMMY_MAIN
+-
+-#  ifdef __cplusplus
+-     extern "C"
+-#  endif
+-   int F77_DUMMY_MAIN() { return 1; }
+-
+-#endif
+-int
+-main ()
+-{
+-int attr=$attr; return attr;
+-  ;
+-  return 0;
+-}
+-_ACEOF
+-if ac_fn_c_try_link "$LINENO"; then :
+-  attr_name=$attr; break
+-fi
+-rm -f core conftest.err conftest.$ac_objext \
+-    conftest$ac_exeext conftest.$ac_ext
+-	done
+-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: $attr_name" >&5
+-$as_echo "$attr_name" >&6; }
+-        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
+-
+-cat >>confdefs.h <<_ACEOF
+-#define PTHREAD_CREATE_JOINABLE $attr_name
+-_ACEOF
+-
+-        fi
+-
+-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking if more special flags are required for pthreads" >&5
+-$as_echo_n "checking if more special flags are required for pthreads... " >&6; }
+-        flag=no
+-        case "${host_cpu}-${host_os}" in
+-            *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
+-            *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
+-        esac
+-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${flag}" >&5
+-$as_echo "${flag}" >&6; }
+-        if test "x$flag" != xno; then
+-            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
+-        fi
+-
+-        LIBS="$save_LIBS"
+-        CFLAGS="$save_CFLAGS"
+-
+-        # More AIX lossage: must compile with xlc_r or cc_r
+-	if test x"$GCC" != xyes; then
+-          for ac_prog in xlc_r cc_r
+-do
+-  # Extract the first word of "$ac_prog", so it can be a program name with args.
+-set dummy $ac_prog; ac_word=$2
+-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+-$as_echo_n "checking for $ac_word... " >&6; }
+-if ${ac_cv_prog_PTHREAD_CC+:} false; then :
+-  $as_echo_n "(cached) " >&6
+-else
+-  if test -n "$PTHREAD_CC"; then
+-  ac_cv_prog_PTHREAD_CC="$PTHREAD_CC" # Let the user override the test.
+-else
+-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+-for as_dir in $PATH
+-do
+-  IFS=$as_save_IFS
+-  test -z "$as_dir" && as_dir=.
+-    for ac_exec_ext in '' $ac_executable_extensions; do
+-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+-    ac_cv_prog_PTHREAD_CC="$ac_prog"
+-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+-    break 2
+-  fi
+-done
+-  done
+-IFS=$as_save_IFS
+-
+-fi
+-fi
+-PTHREAD_CC=$ac_cv_prog_PTHREAD_CC
+-if test -n "$PTHREAD_CC"; then
+-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PTHREAD_CC" >&5
+-$as_echo "$PTHREAD_CC" >&6; }
+-else
+-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+-$as_echo "no" >&6; }
+-fi
+-
+-
+-  test -n "$PTHREAD_CC" && break
+-done
+-test -n "$PTHREAD_CC" || PTHREAD_CC="${CC}"
+-
+-        else
+-          PTHREAD_CC=$CC
+-	fi
+-else
+-        PTHREAD_CC="$CC"
++    PTHREAD_CC="$CC"
+ fi
+
+