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[8/8] configure: do_compiler: Dump some extra info under bash

Message ID 1507564902-9000-9-git-send-email-ian.jackson@eu.citrix.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ian Jackson Oct. 9, 2017, 4:01 p.m. UTC
This makes it much easier to find a particular thing in config.log.

The information may be lacking in other shells, resulting in harmless
empty output.  (This is why we don't use the proper ${FUNCNAME[*]}
array syntax - other shells will choke on that.)

The extra output is only printed if configure is run with bash.  The
something), it is necessary to say   bash ./configure  to get the extra
debug info in the log.

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
---
v4: No longer tag this patch RFC.
---
 configure | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox

Patch

diff --git a/configure b/configure
index 6f691df..21a2b15 100755
--- a/configure
+++ b/configure
@@ -60,6 +60,10 @@  do_compiler() {
     # is compiler binary to execute.
     local compiler="$1"
     shift
+    echo >>config.log "
+funcs: ${FUNCNAME}
+lines: ${BASH_LINENO}
+files: ${BASH_SOURCE}"
     echo $compiler "$@" >> config.log
     $compiler "$@" >> config.log 2>&1 || return $?
     # Test passed. If this is an --enable-werror build, rerun