Improve and update comments a bit, and also improve the error messages

[nmh] / configure.ac

diff --git a/configure.ac b/configure.ac
old mode 100755 (executable)
new mode 100644 (file)
index 9006625..f1dc37b
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,6 @@ dnl
 dnl configure.ac -- autoconf template for nmh
 dnl
 
 dnl configure.ac -- autoconf template for nmh
 dnl
 

-dnl Move this up a bit

 AC_PREREQ([2.68])
 
 AC_INIT([nmh], m4_normalize(m4_include([VERSION])), [nmh-workers@nongnu.org])
 AC_PREREQ([2.68])
 
 AC_INIT([nmh], m4_normalize(m4_include([VERSION])), [nmh-workers@nongnu.org])


@@ -135,24 +134,26 @@ if test "$GCC" != yes; then
   dnl better to use an autoconf test, except -v will probably succeed
   dnl with many other compilers but have different meaning.
   AS_CASE([`${CC} -V 2>&1`],
   dnl better to use an autoconf test, except -v will probably succeed
   dnl with many other compilers but have different meaning.
   AS_CASE([`${CC} -V 2>&1`],

-          [cc:\ Sun\ C*], [CFLAGS=\
-"${CFLAGS:+$CFLAGS }-v -errtags=yes -erroff=E_STATEMENT_NOT_REACHED"])
+          [cc:\ Sun\ C*], [AM_CFLAGS=\
+"${AM_CFLAGS:+$AM_CFLAGS }-v -errtags=yes -erroff=E_STATEMENT_NOT_REACHED"])

 fi
 
 AC_CACHE_CHECK([whether compiler supports -Wall], [nmh_cv_has_wall],
                [nmh_saved_cflags="$CFLAGS"
 fi
 
 AC_CACHE_CHECK([whether compiler supports -Wall], [nmh_cv_has_wall],
                [nmh_saved_cflags="$CFLAGS"

-               CFLAGS="$CFLAGS -Wall -Werror"
+               CFLAGS="$AM_CFLAGS $CFLAGS -Wall -Werror"

                AC_TRY_COMPILE([],[],nmh_cv_has_wall=yes,nmh_cv_has_wall=no)
                CFLAGS="$nmh_saved_cflags"])
                AC_TRY_COMPILE([],[],nmh_cv_has_wall=yes,nmh_cv_has_wall=no)
                CFLAGS="$nmh_saved_cflags"])

-test "$nmh_cv_has_wall" = "yes"  &&  CFLAGS="${CFLAGS:+$CFLAGS }-Wall"
+test "$nmh_cv_has_wall" = "yes"  &&  AM_CFLAGS="${AM_CFLAGS:+$AM_CFLAGS }-Wall"

 
 AC_CACHE_CHECK([whether compiler supports -Wextra], [nmh_cv_has_wextra],
                [nmh_saved_cflags="$CFLAGS"
 
 AC_CACHE_CHECK([whether compiler supports -Wextra], [nmh_cv_has_wextra],
                [nmh_saved_cflags="$CFLAGS"

-               CFLAGS="$CFLAGS -Wextra -Werror"
+               CFLAGS="$AM_CFLAGS $CFLAGS -Wextra -Werror"

                AC_TRY_COMPILE([],[],nmh_cv_has_wextra=yes,
                               nmh_cv_has_wextra=no)
                CFLAGS="$nmh_saved_cflags"])
                AC_TRY_COMPILE([],[],nmh_cv_has_wextra=yes,
                               nmh_cv_has_wextra=no)
                CFLAGS="$nmh_saved_cflags"])

-test "$nmh_cv_has_wextra" = "yes"  &&  CFLAGS="${CFLAGS:+$CFLAGS }-Wextra"
+test "$nmh_cv_has_wextra" = "yes"  &&  AM_CFLAGS="${AM_CFLAGS:+$AM_CFLAGS }-Wextra"
+
+AC_SUBST([AM_CFLAGS])

 
 dnl Check for any platform-specific additional AM_CPPFLAGS.  This depends on
 dnl MULTIBYTE_ENABLED having already been set.
 
 dnl Check for any platform-specific additional AM_CPPFLAGS.  This depends on
 dnl MULTIBYTE_ENABLED having already been set.


@@ -207,13 +208,13 @@ AC_CACHE_CHECK([whether linker supports -Qunused-arguments],
                [AS_IF([test "$GCC" = yes  &&  `${CC} --version 2>&1 | \
                        grep clang >/dev/null`],
                       [nmh_saved_ldflags="$LDFLAGS"
                [AS_IF([test "$GCC" = yes  &&  `${CC} --version 2>&1 | \
                        grep clang >/dev/null`],
                       [nmh_saved_ldflags="$LDFLAGS"

-                       LDFLAGS="$LDFLAGS -Qunused-arguments"
+                       LDFLAGS="$AM_LDFLAGS $LDFLAGS -Qunused-arguments"

                        AC_TRY_LINK([],[],nmh_cv_has_q_unused_arguments=yes,
                                          nmh_cv_has_q_unused_arguments=no)
                        LDFLAGS="$nmh_saved_ldflags"],
                        [nmh_cv_has_q_unused_arguments=no])])
 test "$nmh_cv_has_q_unused_arguments" = "yes"  &&  \
                        AC_TRY_LINK([],[],nmh_cv_has_q_unused_arguments=yes,
                                          nmh_cv_has_q_unused_arguments=no)
                        LDFLAGS="$nmh_saved_ldflags"],
                        [nmh_cv_has_q_unused_arguments=no])])
 test "$nmh_cv_has_q_unused_arguments" = "yes"  &&  \

-  LDFLAGS="${LDFLAGS:+$LDFLAGS }-Qunused-arguments"
+  AM_LDFLAGS="${AM_LDFLAGS:+$AM_LDFLAGS }-Qunused-arguments"

 
 dnl This hack turns off assertions by default, assuming
 dnl that configure still uses this shell variable.  Without
 
 dnl This hack turns off assertions by default, assuming
 dnl that configure still uses this shell variable.  Without


@@ -495,12 +496,10 @@ AS_IF([test "x$with_oauth" != xno && test -n "$curl_config"], [
             AS_IF([test "x$CURL_USER_AGENT" != "x`echo $CURL_USER_AGENT | sed 's/ //'`"],
                   [AC_MSG_WARN([unexpected curl-config --version: $CURL_USER_AGENT])
                    CURL_USER_AGENT=libcurl/UNKNOWN])
             AS_IF([test "x$CURL_USER_AGENT" != "x`echo $CURL_USER_AGENT | sed 's/ //'`"],
                   [AC_MSG_WARN([unexpected curl-config --version: $CURL_USER_AGENT])
                    CURL_USER_AGENT=libcurl/UNKNOWN])

-                   echo "HEYEPG ($CURL_USER_AGENT)"

             AC_SUBST([CURL_USER_AGENT])
           ])
             AC_SUBST([CURL_USER_AGENT])
           ])

-      ], [
-        CFLAGS="$save_CFLAGS"

       ])
       ])

+    CFLAGS="$save_CFLAGS"

   ])
 
 dnl -----------------
   ])
 
 dnl -----------------


@@ -585,8 +584,8 @@ nmh configuration
 nmh version                : AC_PACKAGE_VERSION
 host os                    : ${host}
 compiler                   : ${CC}
 nmh version                : AC_PACKAGE_VERSION
 host os                    : ${host}
 compiler                   : ${CC}

-compiler flags             : ${CFLAGS}
-linker flags               : ${LDFLAGS}
+compiler flags             : ${AM_CFLAGS} ${CFLAGS}
+linker flags               : ${AM_LDFLAGS} ${LDFLAGS}

 preprocessor flags         : ${AM_CPPFLAGS} ${CPPFLAGS}
 source code location       : ${srcdir}
 binary install path        : ${nmhbin}
 preprocessor flags         : ${AM_CPPFLAGS} ${CPPFLAGS}
 source code location       : ${srcdir}
 binary install path        : ${nmhbin}