[pkg-firebird-general] Bug#654793: firebird2.5: Hardeneng flags not fully enabled

Alex Peshkoff peshkoff at mail.ru
Wed Jan 11 12:49:40 UTC 2012

 On 01/11/12 12:23, Damyan Ivanov wrote:
> -=| Alex Peshkoff, 11.01.2012 11:57:55 +0400 |=-
>>  On 01/10/12 21:17, Moritz Muehlenhoff wrote:
>>> On Tue, Jan 10, 2012 at 11:06:04AM +0200, Damyan Ivanov wrote:
>>>>> - The check for fortified source functions depends on the use of 
>>>>> such functions. If none of them are present the error "no 
>>>>> protectable libc functions used" is shown. However, there are also 
>>>>> results that show "no" (e.g. /usr/bin/fbsvcmgr). As such, there 
>>>>> might indeed be a problem with the LDFLAGS being overwritten.
>>>> Most of the binaries suffer from this, and in the end the reason 
>>>> appears to be missing usage of CPPFLAGS when compiling C++ sources.
>>> That's correct. I've meant CPPFLAGS.
>> CPreProcessorFLAGS when compiling C++ resources? I always use for it
>> CXXFLAGS, which are taken into an account in firebird makefiles.
>> http://stackoverflow.com/questions/495598/difference-between-cppflags-and-cxxflags-in-gnu-make
> CPP can pre-process all kinds of sources, C, C++, Fortran... and we 
> want all of them to have that _FORTIFY_SOURCE=2 define. I think this 
> is the reason to put it in CPPFLAGS -- to have it when pre-processing 
> all source files.
> As I understand it, CPPFLAGS is now taken into account when compiling 
> plain C sources by pure luck -- the build system relies on the 
> implicit rule for .c -> .o compilation in 'make'. And since explicit 
> rules are used for .cpp -> .o compilation, CPPFLAGS integration is 
> gone.
> From 
> https://www.gnu.org/savannah-checkouts/gnu/make/manual/html_node/Catalogue-of-Rules.html#Catalogue-of-Rules
> Compiling C programs
>     n.o is made automatically from n.c with a recipe of the form 
>     ‘$(CC) $(CPPFLAGS) $(CFLAGS) -c’.
> Compiling C++ programs
>     n.o is made automatically from n.cc, n.cpp, or n.C with a recipe 
>     of the form ‘$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c’. We encourage you 
>     to use the suffix ‘.cc’ for C++ source files instead of ‘.C’.
> Compiling Pascal programs
>     n.o is made automatically from n.p with the recipe ‘$(PC) 
>     $(PFLAGS) -c’.
> Compiling Fortran and Ratfor programs
>     n.o is made automatically from n.r, n.F or n.f by running the 
>     Fortran compiler. The precise recipe used is as follows:
>     ‘.f’
>         ‘$(FC) $(FFLAGS) -c’.
>     ‘.F’
>         ‘$(FC) $(FFLAGS) $(CPPFLAGS) -c’.
>     ‘.r’
>         ‘$(FC) $(FFLAGS) $(RFLAGS) -c’. 
> So using CPPFLAGS for C++ sources is the default, not some exotic :)
> Hopefully this makes the patch integrating CPPFLAGS acceptable.

Not completely - but now I can see what do you want. I will fix the build.

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