transport: clarify error message when transport is not selected

[openocd] / configure.ac

diff --git a/configure.ac b/configure.ac
index 13d25591f7f872c9946a14ddbf092b6a0f1278ce..ce28633812d909fdcc0a2e27223a938d6a5f6b73 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -5,6 +5,14 @@ AC_CONFIG_SRCDIR([src/openocd.c])
 
 m4_include([config_subdir.m4])dnl
 
+# check for makeinfo before calling AM_INIT_AUTOMAKE
+AC_CHECK_PROG([MAKEINFO], [makeinfo], [makeinfo])
+if test "x$MAKEINFO" = "x"; then
+  MAKEINFO='echo makeinfo missing; true'
+  AC_MSG_WARN([Info documentation will not be built.])
+fi
+AC_SUBST([MAKEINFO])
+
 AM_INIT_AUTOMAKE([-Wall -Wno-portability dist-bzip2 dist-zip subdir-objects])
 
 AC_CONFIG_HEADERS([config.h])
@@ -1248,47 +1256,6 @@ if test $gcc_warnings = yes; then
   CFLAGS="$CFLAGS $GCC_WARNINGS"
 fi
 
-# Setup for compiling build tools
-AC_MSG_CHECKING([for a C compiler for build tools])
-if test $cross_compiling = yes; then
-  AC_CHECK_PROGS(CC_FOR_BUILD, gcc cc)
-  CFLAGS_FOR_BUILD="-g -O2 $GCC_WARNINGS"
-else
-  CC_FOR_BUILD=$CC
-  CFLAGS_FOR_BUILD=$CFLAGS
-fi
-
-AC_MSG_RESULT([$CC_FOR_BUILD])
-AC_SUBST([CC_FOR_BUILD])
-AC_SUBST([CFLAGS_FOR_BUILD])
-
-AC_MSG_CHECKING([for suffix of executable build tools])
-if test $cross_compiling = yes; then
-  cat >conftest.c <<\_______EOF
-int main ()
-{
-  exit (0);
-}
-_______EOF
-  for i in .exe ""; do
-    compile="$CC_FOR_BUILD conftest.c -o conftest$i"
-    if AC_TRY_EVAL(compile); then
-      if (./conftest) 2>&AC_FD_CC; then
-        EXEEXT_FOR_BUILD=$i
-        break
-      fi
-    fi
-  done
-  rm -f conftest*
-  if test "${EXEEXT_FOR_BUILD+set}" != set; then
-    AC_MSG_ERROR([Cannot determine suffix of executable build tools])
-  fi
-else
-  EXEEXT_FOR_BUILD=$EXEEXT
-fi
-AC_MSG_RESULT([$EXEEXT_FOR_BUILD])
-AC_SUBST([EXEEXT_FOR_BUILD])
-
 AC_CONFIG_FILES([
   Makefile
   src/Makefile