Ticket #47882: patch-configure.diff

configure

@@ -177 +177 @@
  exit
 fi
 
-# 11. CHECK TO SEE WHETHER THIS SYSTEM HAS GCC INSTALLED
+# 11. CHECK TO SEE WHETHER THIS SYSTEM HAS GCC/CLANG INSTALLED
 
-echo $ECHO_N "Checking for gcc               ............. $ECHO_C"
-whichout=`which gcc 2> conf.stderr`
+echo $ECHO_N "Checking for gcc/clang          ............. $ECHO_C"
+whichout=`echo $CC 2> conf.stderr`
 rm -f conf.*
 if test "`echo $whichout | sed 's/\([a-z]*\).*/\1/'`" = "no" ; then whichout="" ; fi
 if test "$whichout" != "" ; then
  echo "YES"
 else
- echo "NO" ; echo "ERROR: Required program gcc could not be found." >&2 ; exit
+ echo "NO" ; echo "ERROR: Required program cc could not be found." >&2 ; exit
 fi
 
 # 12. CHECK TO SEE WHETHER THIS SYSTEM HAS GNU READLINE HEADERS
 
 echo $ECHO_N "Checking for libreadline-dev   ............. $ECHO_C"
-if printf '#include <stdio.h>\n#include <readline/readline.h>\nint main() { return 0; }\n' | gcc -x c - -o conf.out > conf.stdout 2> conf.stderr
+if printf '#include <stdio.h>\n#include <readline/readline.h>\nint main() { return 0; }\n' | $CC -x c - -o conf.out > conf.stdout 2> conf.stderr
 then
  rm -f conf.*
  echo "YES"
@@ -208 +208 @@
 # 13. CHECK TO SEE WHETHER THIS SYSTEM HAS CFITSIO HEADERS
 
 echo $ECHO_N "Checking for libcfitsio-dev    ............. $ECHO_C"
-if printf '#include <fitsio.h>\nint main() { return 0; }\n' | gcc -x c - -o conf.out > conf.stdout 2> conf.stderr
+if printf '#include <fitsio.h>\nint main() { return 0; }\n' | $CC -x c - -o conf.out > conf.stdout 2> conf.stderr
 then
  rm -f conf.*
  echo "YES"
@@ -224 +224 @@
 # 14. CHECK TO SEE WHETHER THIS SYSTEM HAS GSL HEADERS
 
 echo $ECHO_N "Checking for libgsl0-dev       ............. $ECHO_C"
-if printf '#include <gsl/gsl_version.h>\nint main() { return 0; }\n' | gcc `gsl-config --cflags` -x c - -o conf.out > conf.stdout 2> conf.stderr
+if printf '#include <gsl/gsl_version.h>\nint main() { return 0; }\n' | $CC `gsl-config --cflags` -x c - -o conf.out > conf.stdout 2> conf.stderr
 then
  rm -f conf.*
  echo "YES"
@@ -250 +250 @@
 # 15. CHECK TO SEE WHETHER THIS SYSTEM HAS FFTW HEADERS
 
 echo $ECHO_N "Checking for libfftw3-dev      ............. $ECHO_C"
-if printf '#include <fftw3.h>\nint main() { return 0; }\n' | gcc -x c - -o conf.out > conf.stdout 2> conf.stderr
+if printf '#include <fftw3.h>\nint main() { return 0; }\n' | $CC -x c - -o conf.out > conf.stdout 2> conf.stderr
 then
  rm -f conf.*
  echo "YES"
@@ -260 +260 @@
  rm -f conf.*
  echo "NO"
  echo $ECHO_N "Checking for libfftw2-dev      ............. $ECHO_C"
- if printf '#include <fftw.h>\nint main() { return 0; }\n' | gcc -x c - -o conf.out > conf.stdout 2> conf.stderr
+ if printf '#include <fftw.h>\nint main() { return 0; }\n' | $CC -x c - -o conf.out > conf.stdout 2> conf.stderr
  then
   rm -f conf.*
   echo "YES"
@@ -290 +290 @@
 # 17. CHECK TO SEE WHETHER THIS SYSTEM HAS LIBPNG HEADERS
 
 echo $ECHO_N "Checking for libpng-dev        ............. $ECHO_C"
-if printf '#include <stdlib.h>\n#include <stdio.h>\n#include <png.h>\nint main() { return 0; }\n' | gcc -x c - -o conf.out > conf.stdout 2> conf.stderr
+if printf '#include <stdlib.h>\n#include <stdio.h>\n#include <png.h>\nint main() { return 0; }\n' | $CC -x c - -o conf.out > conf.stdout 2> conf.stderr
 then
  rm -f conf.*
  echo "YES"
@@ -304 +304 @@
 # 18. CHECK TO SEE WHETHER THIS SYSTEM HAS KPATHSEA HEADERS
 
 echo $ECHO_N "Checking for libkpathsea-dev   ............. $ECHO_C"
-if printf '#include <stdlib.h>\n#include <stdio.h>\n#include <kpathsea/kpathsea.h>\nint main() { return 0; }\n' | gcc -x c - -o conf.out > conf.stdout 2> conf.stderr
+if printf '#include <stdlib.h>\n#include <stdio.h>\n#include <kpathsea/kpathsea.h>\nint main() { return 0; }\n' | $CC -x c - -o conf.out > conf.stdout 2> conf.stderr
 then
  rm -f conf.*
  echo "YES"