[project @ 2004-12-16 10:36:57 by simonmar]

Sanity check when configuring for mingw32: make sure that $CC is a
mingw gcc before proceeding.

aclocal.m4

@@ -511,6 +511,19 @@ AC_SUBST([HaveGcc], [`echo $fp_cv_have_gcc | sed 'y/yesno/YESNO/'`])
 AC_SUBST([GccVersion], [`gcc --version | grep mingw | cut -f 3 -d ' '`])
 ])# FP_HAVE_GCC
 
+AC_DEFUN([FP_MINGW_GCC],
+[
+  case $HostOS_CPP in
+    mingw*)  AC_MSG_CHECKING([whether $CC is a mingw gcc])
+	     if $CC -v 2>&1 | grep mingw >/dev/null; then
+		AC_MSG_RESULT([yes])
+	     else
+		AC_MSG_RESULT([no])
+		AC_MSG_ERROR([Please use --with-gcc to specify a mingw gcc])
+	     fi;;
+    *) ;;	
+  esac
+])
 
 dnl Small feature test for perl version. Assumes PerlCmd
 dnl contains path to perl binary

configure.ac

@@ -805,6 +805,7 @@ dnl     Figure out which C compiler to use.  Gcc is preferred.
 dnl     If gcc, make sure it's at least 2.1
 dnl
 FP_HAVE_GCC
+FP_MINGW_GCC
 
 dnl ** figure out how to invoke cpp directly (gcc -E is no good)
 AC_PROG_CPP