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build: gcc -fplugin=frr-format support

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Try to find the plugin and add it to CFLAGS if successful.

Signed-off-by: David Lamparter <equinox@diac24.net>
This commit is contained in:
David Lamparter 2020-03-29 07:58:59 +02:00
parent 2537f690c3
commit ac92fc9e9f
1 changed files with 42 additions and 2 deletions
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44
configure.ac
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@ -182,13 +182,13 @@ dnl - specifically, options to control warnings
AC_USE_SYSTEM_EXTENSIONS
AC_DEFUN([AC_C_FLAG], [{
m4_pushdef([cachename],[m4_translit([frr_cv_$1],[ =-+],[____])])
m4_pushdef([cachename],[m4_translit([frr_cv_$1],[ =-+/{}$],[________])])
AC_CACHE_CHECK([[whether $CC supports $1]], cachename, [
AC_LANG_PUSH([C])
ac_c_flag_save="$CFLAGS"
CFLAGS="$CFLAGS $1"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[]])],
[AC_LANG_PROGRAM([[$4]])],
[
cachename=yes
], [
@ -354,6 +354,44 @@ if test "$enable_undefined_sanitizer" = "yes"; then
fi
AC_SUBST([SAN_FLAGS])
dnl frr-format.so
if test "$with_frr_format" != "no" -a "$with_frr_format" != "yes" -a -n "$with_frr_format"; then
AC_C_FLAG([-fplugin=${with_frr_format}], [
AC_MSG_ERROR([specified frr-format plugin ($with_frr_format) does not work])
],,[
#ifndef _FRR_ATTRIBUTE_PRINTFRR
#error plugin not loaded
#endif
#if _FRR_ATTRIBUTE_PRINTFRR < 0x10000
#error plugin too old
#endif
])
elif test "$with_frr_format" = "no"; then
: #nothing
else
AC_C_FLAG([-fplugin=tools/gcc-plugins/frr-format.so],[
AC_C_FLAG([-fplugin=frr-format],[
if test "$with_frr_format" = "yes"; then
AC_MSG_ERROR([frr-format plugin requested but not found])
fi
],,[
#ifndef _FRR_ATTRIBUTE_PRINTFRR
#error plugin not loaded
#endif
#if _FRR_ATTRIBUTE_PRINTFRR < 0x10000
#error plugin too old
#endif
])
],,[
#ifndef _FRR_ATTRIBUTE_PRINTFRR
#error plugin not loaded
#endif
#if _FRR_ATTRIBUTE_PRINTFRR < 0x10000
#error plugin too old
#endif
])
fi
dnl ----------
dnl Essentials
dnl ----------
@ -600,6 +638,8 @@ AC_ARG_ENABLE([undefined-sanitizer],
AS_HELP_STRING([--undefined-sanitizer], [enable UndefinedBehaviorSanitizer support for detecting undefined behavior]))
AC_ARG_WITH([crypto],
AS_HELP_STRING([--with-crypto=<internal|openssl>], [choose between different implementations of cryptographic functions(default value is --with-crypto=internal)]))
AC_ARG_WITH([frr-format],
AS_HELP_STRING([--with-frr-format[=<.../frr-format.so>]], [use frr-format GCC plugin]))
#if openssl, else use the internal
AS_IF([test "$with_crypto" = "openssl"], [