diff options
author | Dan Nicolaescu <dann@ics.uci.edu> | 2009-11-20 06:05:10 +0000 |
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committer | Dan Nicolaescu <dann@ics.uci.edu> | 2009-11-20 06:05:10 +0000 |
commit | d4e2fb3ae45810b62e983938e2440061451d0c84 (patch) | |
tree | 5c5aaeae8ee88ad79cd6860783d3f4f2d74cb4ec /configure | |
parent | 694dc1648f1ac092c52655fccfb0503276310cb8 (diff) | |
download | emacs-d4e2fb3ae45810b62e983938e2440061451d0c84.tar.gz |
Use -Wdeclaration-after-statement if available.
Diffstat (limited to 'configure')
-rwxr-xr-x | configure | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/configure b/configure index 3f1b2bcde69..c698db5e762 100755 --- a/configure +++ b/configure @@ -4896,6 +4896,62 @@ CFLAGS="$SAVE_CFLAGS" unset has_option unset SAVE_CFLAGS +### Use -Wdeclaration-after-statement if the compiler supports it +{ $as_echo "$as_me:$LINENO: checking whether gcc understands -Wdeclaration-after-statement" >&5 +$as_echo_n "checking whether gcc understands -Wdeclaration-after-statement... " >&6; } +SAVE_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -Wdeclaration-after-statement" +cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (ac_try="$ac_compile" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\"" +$as_echo "$ac_try_echo") >&5 + (eval "$ac_compile") 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && { + test -z "$ac_c_werror_flag" || + test ! -s conftest.err + } && test -s conftest.$ac_objext; then + has_option=yes +else + $as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + has_option=no +fi + +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +if test $has_option = yes; then + C_WARNINGS_SWITCH="-Wdeclaration-after-statement $C_WARNINGS_SWITCH" +fi +{ $as_echo "$as_me:$LINENO: result: $has_option" >&5 +$as_echo "$has_option" >&6; } +CFLAGS="$SAVE_CFLAGS" +unset has_option +unset SAVE_CFLAGS + #### Some other nice autoconf tests. { $as_echo "$as_me:$LINENO: checking whether ln -s works" >&5 |