[postgis-users] compiling from source code

[Regina Obe]

Steve and Sandeep,

Can you try gcc -v instead and let me know what that outputs?

I just checked our Debian PostGIS bot, and she's running gcc 5.2.1  and think she's running the newest of any of our bots . So I can 't rule out a newer gcc at fault here.
However if I do gcc -V, I get an error on her too, so that's not the issue here:
--

gcc: error: unrecognized command line option â?~-Vâ?T
gcc: fatal error: no input files
compilation terminated.

However, lower case -v  (which is what I think configure uses, works just fine).

gcc -v

outputs:
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 5.2.1-22' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-5 --enable-shared --ena
jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --with-arch-32=i586 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-m
Thread model: posix
gcc version 5.2.1 20151010 (Debian 5.2.1-22)


I'm not sure where Sandeep's   gcc -V is coming from in configure, cause it looks like gcc -v works fine on his system too, but then somewhere down the line switches to upper case -V which is not a valid switch command even in lower gcc versions.




Thanks,
Regina

-----
From: Stephen Woodbridge Date: Fri, Jul 7, 2017 at 2:09 PM



I get the same error running on Ubuntu 16.04 with:

$ gcc -V
gcc: error: unrecognized command line option ‘-V’
gcc: fatal error: no input files
compilation terminated.

Looks like the option should be --version
$ gcc --version
gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

-Steve

On 7/7/2017 1:51 PM, Sandeep Gupta wrote:
Hi,

I am using gcc version 5.3 to compile postgis on Fedora.
The compile  fails at the configure step.

I get the error:

configure: error: C preprocessor "gcc" fails sanity check
See `config.log' for more details

The relevant line in config.log:
configure:3031: gcc -v >&5
Reading specs from
/home/linuxbrew/.linuxbrew/Cellar/gcc/5.3.0/lib/gcc/x86_64-unknown-linux-gnu/5.3.0/specs
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home/linuxbrew/.linuxbrew/Cellar/gcc/5.3.0/libexec/gcc/x86_64-unknown-linux-gnu/5.3.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure
--prefix=/home/linuxbrew/.linuxbrew/Cellar/gcc/5.3.0
--enable-languages=c,c++,objc,obj-c++,fortran --program-suffix=-5
--with-gmp=/home/linuxbrew/.linuxbrew/opt/gmp
--with-mpfr=/home/linuxbrew/.linuxbrew/opt/mpfr
--with-mpc=/home/linuxbrew/.linuxbrew/opt/libmpc
--with-isl=/home/linuxbrew/.linuxbrew/opt/isl --with-system-zlib
--enable-libstdcxx-time=yes --enable-stage1-checking
--enable-checking=release --enable-lto
--with-build-config=bootstrap-debug --disable-werror
--with-pkgversion='Homebrew gcc 5.3.0'
--with-bugurl=https://github.com/Homebrew/homebrew/issues
--enable-plugin --disable-nls --disable-multilib
Thread model: posix
gcc version 5.3.0 (Homebrew gcc 5.3.0)
configure:3042: $? = 0
configure:3031: gcc -V >&5
gcc: error: unrecognized command line option '-V'
gcc: fatal error: no input files
compilation terminated.



It seems gcc does not like "-V" option. I this a issue to with later
gcc versions?

Thanks.
sandeep
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