add autoconf stuff to detect problematic compiler options on sun studio

compilers

acinclude.m4

+dnl acinclude.m4
+dnl
+dnl autoconf macro to check for NA related errors by compiling with -xO1
+dnl on Sun Studio Compilers
+dnl
+AC_DEFUN([CHECK_SUN_COMPILER_OPTIMIZATION],[
+  AC_CACHE_CHECK([for correct optimization with SUN compilers],
+  r_cv_sun_opt5_$1,[
+if test -z "${R_HOME}" ; then
+ R_HOME=`R RHOME`
+fi
+
+if test -z "${R_HOME}" ; then
+  echo "Cannot find the R distribution!"
+  exit 1 
+fi
+
+CC=`"${R_HOME}/bin/R" CMD config CC`
+F77=`"${R_HOME}/bin/R" CMD config F77`
+PKG_CFLAGS=`"${R_HOME}/bin/R" CMD config CFLAGS`
+PKG_FFLAGS=`"${R_HOME}/bin/R" CMD config FFLAGS`
+
+
+case "${host}" in
+  *-sun-solaris*) 
+dnl use a hard coded call to src/tripack.f through R
+dnl to determine wether it returns all NA. 
+dnl then retry with -xO5
+dnl
+  cat >conftest.R <<EOT
+check <- function(){
+  dyn.load("src/tripack.so")
+  x1 <- c(-1.17182301840432, -0.738152338408028, 0.0724389527039489, 0.605106093471307, -2.16072259908434)
+  x2 <- c(0.76066459689394, 0.419761334644176, 1.04733588786577, 0.327582569290709, -3.35453228783072)
+  n <- length(x1)
+  ret <- .Fortran("trmesh",
+                  as.integer(n),
+                  x=as.double(x1),
+                  y=as.double(x2),
+                  tlist=integer(6*n-12),
+                  tlptr=integer(6*n-12),
+                  tlend=integer(n),
+                  tlnew=as.integer(0),
+                  tnear=integer(n),
+                  tnext=integer(n),
+                  tdist=double(n),
+                  ier=as.integer(0))
+  if(length(ret$tdist[[is.na(ret\$tdist)]])==5)
+    cat("export ALL_NAS=yes\n", file="conftest.out")
+  else
+    cat("export ALL_NAS=no\n", file="conftest.out")
+}
+check()
+EOT
+
+  rm -f src/tripack.o
+  rm -f src/tripack.so
+  $R_HOME/bin/R CMD SHLIB src/tripack.f
+
+  echo "source(\"conftest.R\")" | $R_HOME/bin/R --vanilla >/dev/null
+  rm -f conftest.R
+  rm -f src/tripack.o
+  rm -f src/tripack.so
+
+
+  eval "`cat ./conftest.out`"
+  rm -f ./conftest.out
+
+  if test -z "${ALL_NAS}" ; then
+    echo "Failed to check for NAs in return values." 
+    exit 1;
+  else
+    if test "${ALL_NAS}" = "yes"; then
+      echo "NAs produced, default compiler optimization too high, trying to relax to -xO5"
+      cat >conftest.R <<EOT
+check <- function(){
+  dyn.load("src/tripack.so")
+  x1 <- c(-1.17182301840432, -0.738152338408028, 0.0724389527039489, 0.605106093471307, -2.16072259908434)
+  x2 <- c(0.76066459689394, 0.419761334644176, 1.04733588786577, 0.327582569290709, -3.35453228783072)
+  n <- length(x1)
+  ret <- .Fortran("trmesh",
+                  as.integer(n),
+                  x=as.double(x1),
+                  y=as.double(x2),
+                  tlist=integer(6*n-12),
+                  tlptr=integer(6*n-12),
+                  tlend=integer(n),
+                  tlnew=as.integer(0),
+                  tnear=integer(n),
+                  tnext=integer(n),
+                  tdist=double(n),
+                  ier=as.integer(0))
+  if(length(ret$tdist[[is.na(ret\$tdist)]])==5)
+    cat("export ALL_NAS=yes\n", file="conftest.out")
+  else
+    cat("export ALL_NAS=no\n", file="conftest.out")
+}
+check()
+EOT
+
+      rm -f src/tripack.o
+      rm -f src/tripack.so
+      MAKEFLAGS='CFLAGS=-xO5 FFLAGS=-O0' $R_HOME/bin/R CMD SHLIB src/tripack.f
+    
+      echo "source(\"conftest.R\")" | $R_HOME/bin/R --vanilla >/dev/null
+      rm -f conftest.R
+      rm -f src/tripack.o
+      rm -f src/tripack.so
+    
+      eval "`cat ./conftest.out`"
+      rm -f ./conftest.out
+    
+      if test "${ALL_NAS}" = "yes"; then
+        echo "still NAs produced, giving up"
+        exit 1
+      else
+        echo -n "will use -xO5 to avoid problems with NAs"
+dnl strip out all -xO[1234] flags, add one -xO5 flag instead
+        NEW_PKG_CFLAGS="-xO5 "
+        for f in ${PKG_CFLAGS}; do
+          case $f in
+              -xO[[1234]])
+            break
+            ;;
+            *)
+              NEW_PKG_CFLAGS="${NEW_PKG_CFLAGS} $f"
+            ;;
+          esac
+        done
+        NEW_PKG_FFLAGS="-O0 "
+        for f in ${PKG_FFLAGS}; do
+          case $f in
+            -xO[[1234]])
+              break
+            ;;
+            *)
+              NEW_PKG_FFLAGS="${NEW_PKG_FFLAGS} $f"
+            ;;
+          esac
+        done
+        PKG_CFLAGS=${NEW_PKG_CFLAGS}
+        PKG_FFLAGS=${NEW_PKG_FFLAGS}
+      fi
+    fi
+  fi
+;;
+*)
+  echo -n "not running on x*-solaris*"
+esac
+
+    ]) # AC_CACHE_CHECK
+]) # AC_DEFUN

configure.ac

+# package/configure.in
+AC_PREREQ(2.50)
+AM_INIT_AUTOMAKE("akima",0.5-4)
+AC_INIT(src/tripack.f)
+#if you want to use more macros
+#AC_CONFIG_MACRO_DIR([m4]) 
+
+if test -z "${R_HOME}" ; then
+ R_HOME=`R RHOME`
+fi
+
+if test -z "${R_HOME}" ; then
+  echo "Cannot find the R distribution!"
+  exit 1 
+fi
+
+CC=`"${R_HOME}/bin/R" CMD config CC`
+F77=`"${R_HOME}/bin/R" CMD config F77`
+
+AC_PROG_CC
+AC_PROG_F77
+
+
+CHECK_SUN_COMPILER_OPTIMIZATION
+
+AC_SUBST(PKG_CFLAGS)
+AC_SUBST(PKG_FFLAGS)
+
+AC_OUTPUT(src/Makevars)
+

src/Makevars.in

+PKG_CFLAGS=@PKG_CFLAGS@ 
+PKG_FFLAGS=@PKG_FFLAGS@