I want my code to compile with the Intel compiler(s) or with gcc/g++ depending on a configure argument. Is this possible? What do I need to put in my configure.ac and Makefile.am files to make this happen?
+2
A:
Of course it is. You can configure a default compiler in configure.ac and if the user wants to use another compiler, he (or she) can pass it to the ./configure script.
You'll find more about it here: How to use autotools.
The part that might be interesting for you is at the middle of the page:
#if a compiler is not specified by the user use intel compilers
AC_PATH_PROG(CC_PATH, $CC, NO_PATH)
if test "$CC_PATH" = NO_PATH; then
CC="icc"
fi
HTH, flokra
flokra
2009-08-14 23:15:45
+1
A:
Usually you can just run
bash $ CC=icc ./configure
to use lcc, or any other compiler as the C compiler, provided the rest of the configure and build process doesn't use any gcc'ism.
nos
2009-08-15 00:19:19
It is better to use: $ ./configure CC=icc. If you pass CC as an argument to configure then re-configuring with config-status will work. If you set CC in the environment, then it will not.
William Pursell
2009-08-15 12:05:42
+2
A:
If you want to use a compiler other than gcc when you compile, pass 'CC=/path/to/compiler' as an argument to configure. (That is, run ./configure CC=/path. Do not use the form CC=/path ./configure.) If you want the default compiler to be something other than gcc, you can put
CC=${CC-/path/to/default/compiler}
in configure.ac before the invocation of AC_PROG_CC.
William Pursell
2009-08-15 12:18:21