X2Go Bug report logs - #84
DESTDIR and OPTFLAGS patches for nx-libs

Package: nx-libs; Maintainer for nx-libs is X2Go Developers <x2go-dev@lists.x2go.org>;

Reported by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Date: Wed, 12 Dec 2012 12:03:38 UTC

Severity: normal

Done: Juri Grabowski <x2go@jugra.de>

Bug is archived. No further changes may be made.

Forwarded to https://github.com/ArcticaProject/nx-libs/issues/141

Full log


Message #44 received at 84@bugs.x2go.org (full text, mbox, reply):

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Date: Wed, 9 Jan 2013 15:21:01 +0100
Message-ID: <CAJ0cceZ8_Cssbx0dYZnFnjOf87ULFv9L7Oyzj8owKjQgY0s_4Q@mail.gmail.com>
Subject: Re: [X2Go-Dev] Bug#84: Hardcoded -O3 in CFLAGS
From: Reinhard Tartler <siretart@gmail.com>
To: 84@bugs.x2go.org
Cc: Bernard Cafarelli <voyageur@gentoo.org>, Jan Engelhardt <jengelh@inai.de>
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On Wed, Jan 9, 2013 at 3:16 PM, Jan Engelhardt <jengelh@inai.de> wrote:
> On Wednesday 2013-01-09 01:00, Bernard Cafarelli wrote:
>
>>Le Tue, 8 Jan 2013 17:07:12 +0100 (CET)
>>Jan Engelhardt <jengelh@inai.de> a écrit:
>>> Why would autoreconf be rerun if you use ./configure CFLAGS=-O2
>>> CXXFLAGS=-O2?
>>
>>I meant, without first removing the "-O3" from configure.in (before
>>autoreconf)
>>
>>With current configure.in, setting CXXFLAGS to "-O2" will give this:
>>nxcomp $ autoreconf && ./configure && make
>>[...]
>>g++ -c -O2 -O3 -fno-rtti -fno-exceptions -I../nx-X11/exports/include
>>-Wmissing-declarations -fPIC -DIN_ADDR_T=in_addr_t -DVERSION=\"3.5.0\"
>>-DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
>>-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -Wall
>>-Wpointer-arith   EncodeBuffer.cpp
>
> I tried the following, but it's not taking any effect. Must be some
> !@#$%^& going on.
>
> <<<<
>
> Give user-specified CXXFLAGS/CFLAGS/LDFLAGS/LIBS higher precedence.
>
> ---
>  nxcomp/Makefile.in     |    6 ++----
>  nxcompext/Makefile.in  |   14 +++++++-------
>  nxcompshad/Makefile.in |    5 ++---
>  nxproxy/Makefile.in    |    4 ++--
>  4 files changed, 13 insertions(+), 16 deletions(-)
>
> Index: nx-libs-3.5.0.17/nxcomp/Makefile.in
> ===================================================================
> --- nx-libs-3.5.0.17.orig/nxcomp/Makefile.in
> +++ nx-libs-3.5.0.17/nxcomp/Makefile.in
> @@ -36,8 +36,7 @@ LIBVERSION=@LIBVERSION@
>  #
>
>  CXX         = @CXX@
> -CXXFLAGS    = @CXXFLAGS@ @X_CFLAGS@ @DEFS@ \
> -              -Wall -Wpointer-arith
> +CXXFLAGS    = @X_CFLAGS@ @DEFS@ -Wall -Wpointer-arith @CXXFLAGS@
>  CXXINCLUDES =
>  CXXDEFINES  =
>
> @@ -46,8 +45,7 @@ CXXDEFINES  =
>  #
>
>  CC          = @CC@
> -CCFLAGS     = @CFLAGS@ @X_CFLAGS@ @DEFS@ \
> -              -Wall -Wpointer-arith
> +CCFLAGS     = @X_CFLAGS@ @DEFS@ -Wall -Wpointer-arith @CFLAGS@
>  CCINCLUDES  =
>  CCDEFINES   =
>
> Index: nx-libs-3.5.0.17/nxcompext/Makefile.in
> ===================================================================
> --- nx-libs-3.5.0.17.orig/nxcompext/Makefile.in
> +++ nx-libs-3.5.0.17/nxcompext/Makefile.in
> @@ -28,26 +28,26 @@ LIBVERSION=@LIBVERSION@
>  #
>
>  CXX         = @CXX@
> -CXXFLAGS    = @CXXFLAGS@ @X_CFLAGS@ @DEFS@ \
> +CXXFLAGS    = @X_CFLAGS@ @DEFS@ \
>                -Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes \
> -              -Wmissing-declarations -Wnested-externs
> +              -Wmissing-declarations -Wnested-externs @CXXFLAGS@
>  CXXINCLUDES = -I. -I../nxcomp
>  CXXDEFINES  =
>
>  CC          = @CC@
> -CCFLAGS     = @CFLAGS@ @X_CFLAGS@ @DEFS@ \
> +CCFLAGS     = @X_CFLAGS@ @DEFS@ \
>                -Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes \
> -              -Wmissing-declarations -Wnested-externs
> +              -Wmissing-declarations -Wnested-externs @CFLAGS@
>  CCINCLUDES  = -I. -I../nxcomp
>  CCDEFINES   =
>
> -LDFLAGS     = @LDFLAGS@ -L../nxcomp
> -LIBS        = @LIBS@ -lz -lNX_X11 -lXcomp
> +LDFLAGS     = -L../nxcomp @LDFLAGS@
> +LIBS        = -lz -lNX_X11 -lXcomp @LIBS@
>
>  #
>  # Only if THREADS is defined
>  #
> -# LIBS = @LIBS@ -lz -ljpeg -lpthread -lNX_X11 -lXcomp
> +# LIBS = -lz -ljpeg -lpthread -lNX_X11 -lXcomp @LIBS@
>  #
>
>  srcdir      = @srcdir@
> Index: nx-libs-3.5.0.17/nxcompshad/Makefile.in
> ===================================================================
> --- nx-libs-3.5.0.17.orig/nxcompshad/Makefile.in
> +++ nx-libs-3.5.0.17/nxcompshad/Makefile.in
> @@ -31,8 +31,7 @@ LIBVERSION=@LIBVERSION@
>  #
>
>  CXX         = @CXX@
> -CXXFLAGS    = @CXXFLAGS@ @X_CFLAGS@ @DEFS@ \
> -              -Wall -Wpointer-arith
> +CXXFLAGS    = @X_CFLAGS@ @DEFS@ -Wall -Wpointer-arith @CXXFLAGS@
>  CXXINCLUDES =
>  CXXDEFINES  =
>
> @@ -48,7 +47,7 @@ CCINCLUDES  =
>  CCDEFINES   =
>
>  LDFLAGS     = @LDFLAGS@
> -LIBS        = @LIBS@ -lNX_X11
> +LIBS        = -lNX_X11 @LIBS@
>
>  #
>  # Only if THREADS is defined.
> Index: nx-libs-3.5.0.17/nxproxy/Makefile.in
> ===================================================================
> --- nx-libs-3.5.0.17.orig/nxproxy/Makefile.in
> +++ nx-libs-3.5.0.17/nxproxy/Makefile.in
> @@ -11,9 +11,9 @@ LIBVERSION=@LIBVERSION@
>  # -Wredundant-decls
>  #
>  CXX      = @CXX@
> -CXXFLAGS = @CXXFLAGS@ @X_CFLAGS@ @DEFS@ \
> +CXXFLAGS = @X_CFLAGS@ @DEFS@ \
>             -Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes \
> -           -Wmissing-declarations -Wnested-externs
> +           -Wmissing-declarations -Wnested-externs @CXXFLAGS@
>
>  CXXINCLUDES = -I. -I../nxcomp


AFAIUI, this is not a fix. Instead of replacing the hardcoded values,
this patch ensures that all options end behind the hardcoded values.
This makes it impossible to drop compiler flags that are specified
within.

This may be fair when your goal is to only change the optimization
level, but may be insufficient when the goal is a hardened build.

-- 
regards,
    Reinhard

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