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| author | Yang Tse <yangsita@gmail.com> | 2013-01-26 03:49:30 +0100 |
|---|---|---|
| committer | Yang Tse <yangsita@gmail.com> | 2013-01-26 03:49:30 +0100 |
| commit | 18b7d9a9f4c835457a6c1871703c511d2f1f3dbd (patch) | |
| tree | c7d61319866f04ad325ded1808db09c115946202 | |
| parent | e916c68de77a4c9368fff31bf33d9eb7a84320d1 (diff) | |
| download | c-ares-18b7d9a9f4c835457a6c1871703c511d2f1f3dbd.tar.gz c-ares-18b7d9a9f4c835457a6c1871703c511d2f1f3dbd.tar.bz2 c-ares-18b7d9a9f4c835457a6c1871703c511d2f1f3dbd.zip | |
zz40-xc-ovr.m4: emit witness message in configure BODY
This avoids witness message in output when running configure --help,
while sending the message to config.log for other configure runs.
| -rw-r--r-- | m4/zz40-xc-ovr.m4 | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/m4/zz40-xc-ovr.m4 b/m4/zz40-xc-ovr.m4 index 567a10f..7bdecca 100644 --- a/m4/zz40-xc-ovr.m4 +++ b/m4/zz40-xc-ovr.m4 @@ -327,9 +327,9 @@ AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_SED])dnl AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_GREP])dnl AC_REQUIRE([_XC_CFG_PRE_CHECK_PATH_SEPARATOR])dnl -echo "checking whether some basic commands and utilities are available... yes" - IFS=$xc_configure_preamble_prev_IFS + +xc_configure_preamble_result='yes' ]) @@ -449,6 +449,36 @@ m4_define([$0],[])dnl ]) +dnl _XC_OVR_ZZ40_WITNESS +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl Emits shell code that allows knowing wether macro +dnl XC_CONFIGURE_PREAMBLE has expanded before configure +dnl body begins, and if it has suceeded when configure +dnl finally runs. Results are recorded in config.log + +AC_DEFUN([_XC_OVR_ZZ40_WITNESS], +[dnl +m4_divert_text([BODY], +[dnl +# +# Witness that XC_CONFIGURE_PREAMBLE has been used. +# + +if test -z "$xc_configure_preamble_result"; then + AC_MSG_WARN([a macro expansion problem has been detected]) + if test -z "$PATH_SEPARATOR"; then + AC_MSG_ERROR([variable 'PATH_SEPARATOR' not set (internal problem)]) + fi +else + AC_MSG_CHECKING([whether some basic commands and utilities are available]) + AC_MSG_RESULT([$xc_configure_preamble_result]) +fi +])dnl +]) + + dnl XC_OVR_ZZ40 dnl ------------------------------------------------- dnl Placing a call to this macro in configure.ac will @@ -458,7 +488,8 @@ dnl provided elsewhere. dnl dnl This is the proper and intended way in which macro dnl XC_CONFIGURE_PREAMBLE will expand early enough in -dnl generated configure script. +dnl generated configure script, as well as witness of +dnl its usage into configure body. AC_DEFUN([XC_OVR_ZZ40], [dnl @@ -487,6 +518,8 @@ AC_BEFORE([$0],[AC_CONFIG_HEADERS])dnl AC_BEFORE([$0],[AC_CONFIG_MACRO_DIR])dnl AC_BEFORE([$0],[AC_CONFIG_MACRO_DIRS])dnl dnl +AC_REQUIRE([_XC_OVR_ZZ40_WITNESS])dnl +dnl m4_pattern_forbid([^_*XC])dnl m4_define([$0],[])dnl ]) |