tags 691449 + patch
quit
Matthias Klose wrote:
> is there a reason not to escape the whitespace by default for
> --export=configure?
--export=configure is designed to be used like this:
conf_opts := $(shell dpkg-buildflags --export=configure)
conf_opts += --prefix=/usr etc
override_dh_auto_configure:
./configure $(conf_opts)
or like this:
eval "./configure `dpkg-buildflags --export=configure` --prefix=/usr
etc"
or like this:
eval "set -- $(dpkg-buildflags --export=configure)"
./configure "$@" --prefix=/usr etc
Therefore it uses double quotes ('"') around arguments that might
contain spaces. Any additional escaping (e.g., '\' before spaces)
would be passed through to configure and break the build.
How about this patch?
Signed-off-by: Jonathan Nieder <jrnie...@gmail.com>
---
man/dpkg-buildflags.1 | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git i/man/dpkg-buildflags.1 w/man/dpkg-buildflags.1
index ea61306b..29fc38aa 100644
--- i/man/dpkg-buildflags.1
+++ w/man/dpkg-buildflags.1
@@ -207,6 +207,24 @@ This variable can be used to disable/enable various
hardening build
flags through the \fBhardening\fP option. See the \fBHARDENING\fP section
for details.
.
+.SH QUOTING
+If \fIformat\fP is either \fBsh\fP or \fBconfigure\fP then output
+is quoted. In a makefile, the simplest way to consume this output is
+to use the \fBshell\fP function:
+.P
+.nf
+ build:
+ ./configure $(shell dpkg-buildflags --export=configure)
+ set -e; $(shell dpkg-buildflags --export=sh); $(MAKE)
+.fi
+.P
+In a shell script, "eval" will interpret the output.
+.P
+.nf
+ eval "./configure $(dpkg-buildflags --export=configure)"
+ eval "$(dpkg-buildflags --export=sh)"
+ make
+.fi
.SH HARDENING
Several compile-time options (detailed below) can be used to help harden
a resulting binary against memory corruption attacks, or provide
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