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From: Sergei Trofimovich <slyfox@HIDDEN>
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It popped out as a
    https://bugs.gentoo.org/show_bug.cgi?id=3D608190
where one of packages failed to build with CFLAGS=3D-ggdb3 was guile-2.0.13

guile git master is also affected:

    $ ./configure CFLAGS=3D-ggdb3
    $ make
    make[1]: Entering directory '/home/slyfox/dev/git/guile/libguile'
      CC       libguile_2.2_la-alist.lo
    In file included from alist.c:398:0:
    ../libguile/alist.x: In function 'scm_init_alist':
    ../libguile/alist.x:2:2537: error: conflicting types for 'scm_i_foreign=
_call'

The problem here is in gcc -ggdb3 which leaves too much
of unrelated input. guile-snarf does not understand how to drop it:

guile/libguile $ guile-snarf alist.c -DHAVE_CONFIG_H -DBUILDING_LIBGUILE=3D=
1 -I.. -I.. -I../lib -I../lib -I/usr/lib64/libffi-3.2.1/include -I/home/sly=
fox/dev/git/guile -ggdb2 | wc -c
1389
guile/libguile $ guile-snarf alist.c -DHAVE_CONFIG_H -DBUILDING_LIBGUILE=3D=
1 -I.. -I.. -I../lib -I../lib -I/usr/lib64/libffi-3.2.1/include -I/home/sly=
fox/dev/git/guile -ggdb3 | wc -c
230085

Fails on both gcc-5.4.0 / gcc-6.3.0

--=20

  Sergei

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X-Loop: help-debbugs@HIDDEN
From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Sergei Trofimovich <slyfox@HIDDEN>
Subject: bug#25803: Acknowledgement (./configure CFLAGS=-ggdb3 fails
 'guile-snarf')
Message-ID: <handler.25803.B.148754382214777.ack <at> debbugs.gnu.org>
References: <20170219223639.61a78924@sf>
X-Gnu-PR-Message: ack 25803
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Reply-To: 25803 <at> debbugs.gnu.org
Date: Sun, 19 Feb 2017 22:38:01 +0000

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25803: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D25803
GNU Bug Tracking System
Contact help-debbugs@HIDDEN with problems

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Subject: bug#25803: [PATCH] guile-snarf: skip -g* arguments to avoid build failure
References: <20170219223639.61a78924@sf>
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Steps to reproduce:
    $ ./configure CFLAGS=-ggdb3
    $ make
    make[1]: Entering directory '/home/slyfox/dev/git/guile/libguile'
      CC       libguile_2.2_la-alist.lo
    In file included from alist.c:398:0:
    ../libguile/alist.x: In function 'scm_init_alist':
    ../libguile/alist.x:2:2537: error: conflicting types for 'scm_i_foreign_call'

The problem here is in gcc -ggdb3 which leaves too much
of unrelated input. guile-snarf does not understand how to drop it:

The fix is to ignore -g* flags. They should only affect debugging output.

* libguile/guile-snarf.in: skip -g* arguments to avoid build failure

Bug: https://bugs.gentoo.org/608190
Bug: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=25803
Signed-off-by: Sergei Trofimovich <slyfox@HIDDEN>
---
 libguile/guile-snarf.in | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/libguile/guile-snarf.in b/libguile/guile-snarf.in
index 47bbc0422..22dc1d389 100644
--- a/libguile/guile-snarf.in
+++ b/libguile/guile-snarf.in
@@ -95,10 +95,22 @@ if [ x"$CPP" = x ] ; then cpp="@CPP@" ; else cpp="$CPP" ; fi
 
 trap "rm -rf $tempdir" 0 1 2 15
 
+# filter out -g* flags from commandline
+# as some flags like -ggdb3 cause CPP
+
+cpp_args=""
+for arg in "$@"
+do
+    case "$arg" in
+        -g*) ;; # skip debug flag
+        *) cpp_args="$cpp_args $arg" ;;
+    esac
+done
+
 if [ ! "$outfile" = "-" ] ; then
-    modern_snarf "$@" > $outfile
+    modern_snarf $cpp_args > $outfile
 else
-    modern_snarf "$@"
+    modern_snarf $cpp_args
 fi
 
 # zonk outfile if errors occurred
-- 
2.11.1

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To: Andy Wingo <wingo@HIDDEN>
Subject: bug#25803: closed (./configure CFLAGS=-ggdb3 fails 'guile-snarf')
CC: tracker <at> debbugs.gnu.org
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X-Gnu-PR-Message: closed 25803
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Date: Wed, 19 Apr 2017 15:21:02 +0000
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Your message dated Wed, 19 Apr 2017 17:20:27 +0200
with message-id <871ssol8zo.fsf@HIDDEN>
and subject line Re: bug#25803: [PATCH] guile-snarf: skip -g* arguments to =
avoid build failure
has caused the debbugs.gnu.org bug report #25803,
regarding ./configure CFLAGS=3D-ggdb3 fails 'guile-snarf'
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs@HIDDEN)


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25803: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D25803
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Date: Sun, 19 Feb 2017 22:36:39 +0000
From: Sergei Trofimovich <slyfox@HIDDEN>
To: bug-guile@HIDDEN
Subject: ./configure CFLAGS=-ggdb3 fails 'guile-snarf'
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It popped out as a
    https://bugs.gentoo.org/show_bug.cgi?id=3D608190
where one of packages failed to build with CFLAGS=3D-ggdb3 was guile-2.0.13

guile git master is also affected:

    $ ./configure CFLAGS=3D-ggdb3
    $ make
    make[1]: Entering directory '/home/slyfox/dev/git/guile/libguile'
      CC       libguile_2.2_la-alist.lo
    In file included from alist.c:398:0:
    ../libguile/alist.x: In function 'scm_init_alist':
    ../libguile/alist.x:2:2537: error: conflicting types for 'scm_i_foreign=
_call'

The problem here is in gcc -ggdb3 which leaves too much
of unrelated input. guile-snarf does not understand how to drop it:

guile/libguile $ guile-snarf alist.c -DHAVE_CONFIG_H -DBUILDING_LIBGUILE=3D=
1 -I.. -I.. -I../lib -I../lib -I/usr/lib64/libffi-3.2.1/include -I/home/sly=
fox/dev/git/guile -ggdb2 | wc -c
1389
guile/libguile $ guile-snarf alist.c -DHAVE_CONFIG_H -DBUILDING_LIBGUILE=3D=
1 -I.. -I.. -I../lib -I../lib -I/usr/lib64/libffi-3.2.1/include -I/home/sly=
fox/dev/git/guile -ggdb3 | wc -c
230085

Fails on both gcc-5.4.0 / gcc-6.3.0

--=20

  Sergei

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From: Andy Wingo <wingo@HIDDEN>
To: Sergei Trofimovich <slyfox@HIDDEN>
Subject: Re: bug#25803: [PATCH] guile-snarf: skip -g* arguments to avoid build
 failure
References: <20170219223639.61a78924@sf>
 <20170219225840.5015-1-slyfox@HIDDEN>
Date: Wed, 19 Apr 2017 17:20:27 +0200
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On Sun 19 Feb 2017 23:58, Sergei Trofimovich <slyfox@HIDDEN> writes:

> The fix is to ignore -g* flags. They should only affect debugging output.
>
> * libguile/guile-snarf.in: skip -g* arguments to avoid build failure

Applied.  Thanks :)

Andy


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To: Sergei Trofimovich <slyfox@HIDDEN>
Subject: bug#25803: closed (Re: bug#25803: [PATCH] guile-snarf: skip -g*
 arguments to avoid build failure)
Message-ID: <handler.25803.D25803.149261523911546.notifdone <at> debbugs.gnu.org>
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Your bug report

#25803: ./configure CFLAGS=3D-ggdb3 fails 'guile-snarf'

which was filed against the guile package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 25803 <at> debbugs.gnu.org.

--=20
25803: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D25803
GNU Bug Tracking System
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Subject: Re: bug#25803: [PATCH] guile-snarf: skip -g* arguments to avoid build
 failure
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 <20170219225840.5015-1-slyfox@HIDDEN>
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On Sun 19 Feb 2017 23:58, Sergei Trofimovich <slyfox@HIDDEN> writes:

> The fix is to ignore -g* flags. They should only affect debugging output.
>
> * libguile/guile-snarf.in: skip -g* arguments to avoid build failure

Applied.  Thanks :)

Andy


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Subject: ./configure CFLAGS=-ggdb3 fails 'guile-snarf'
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It popped out as a
    https://bugs.gentoo.org/show_bug.cgi?id=3D608190
where one of packages failed to build with CFLAGS=3D-ggdb3 was guile-2.0.13

guile git master is also affected:

    $ ./configure CFLAGS=3D-ggdb3
    $ make
    make[1]: Entering directory '/home/slyfox/dev/git/guile/libguile'
      CC       libguile_2.2_la-alist.lo
    In file included from alist.c:398:0:
    ../libguile/alist.x: In function 'scm_init_alist':
    ../libguile/alist.x:2:2537: error: conflicting types for 'scm_i_foreign=
_call'

The problem here is in gcc -ggdb3 which leaves too much
of unrelated input. guile-snarf does not understand how to drop it:

guile/libguile $ guile-snarf alist.c -DHAVE_CONFIG_H -DBUILDING_LIBGUILE=3D=
1 -I.. -I.. -I../lib -I../lib -I/usr/lib64/libffi-3.2.1/include -I/home/sly=
fox/dev/git/guile -ggdb2 | wc -c
1389
guile/libguile $ guile-snarf alist.c -DHAVE_CONFIG_H -DBUILDING_LIBGUILE=3D=
1 -I.. -I.. -I../lib -I../lib -I/usr/lib64/libffi-3.2.1/include -I/home/sly=
fox/dev/git/guile -ggdb3 | wc -c
230085

Fails on both gcc-5.4.0 / gcc-6.3.0

--=20

  Sergei

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Hello,

Commit f775ab3654357fcaad294b95efb0b1c16de1eda8 (=E2=80=9Cguile-snarf: skip=
 -g*
arguments to avoid build failure=E2=80=9D) broke guile-snarf when passed
arguments with whitespace, as in:

  guile-snarf -o auth.x auth.c -DPACKAGE_STRING=3D\"Guile-SSH\ 0.10.2\" =E2=
=80=A6

The breakage comes from the fact that arguments are accumulated in a
string, in the =E2=80=98cpp_args=E2=80=99 variable, so the shell loses info=
rmation about
word separation.

Besides, filtering out =E2=80=98-g=E2=80=99 arguments seems dubious.

WDYT?

Ludo=E2=80=99.
Last modified: Mon, 25 Nov 2019 12:00:02 UTC

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