specfile: build process updated

* using %autosetup now (added 'BuildRequires: git')
  * no longer switching to base/ dir for building purposes
  * using %configure macro instead of manually invoking ./configure

gmp.spec

@@ -18,6 +18,7 @@ License: LGPLv3+ or GPLv2+
 Group: System Environment/Libraries
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires: autoconf automake libtool
+BuildRequires: git
 #autoreconf on arm needs:
 BuildRequires: perl-Carp
 
@@ -67,8 +68,7 @@ The static libraries for using the GNU MP arbitrary precision library
 in applications.
 
 %prep
-%setup -q
-%patch2 -p1 -b .debuginfo
+%autosetup -S git
 
 # switch the defaults to new cpus on s390x
 %ifarch s390x
@@ -82,43 +82,21 @@ if as --help | grep -q execstack; then
   export CCAS="gcc -c -Wa,--noexecstack"
 fi
 
-# Dummy invocation to initialization CFLAGS etc.
-%global _configure :
-%configure
+%configure --enable-cxx
 
-mkdir base
-cd base
-ln -s ../configure .
 %ifarch %{ix86}
-export CFLAGS=$(echo $CFLAGS | sed -e "s/-mtune=[^ ]*//g" | sed -e "s/-march=[^ ]*//g")"-g -march=i686"
-export CXXFLAGS=$(echo $CXXFLAGS | sed -e "s/-mtune=[^ ]*//g" | sed -e "s/-march=[^ ]*//g")"-g -march=i686"
+  export CFLAGS=$(echo $CFLAGS | sed -e "s/-mtune=[^ ]*//g" | sed -e "s/-march=[^ ]*//g")"-march=i686"
+  export CXXFLAGS=$(echo $CXXFLAGS | sed -e "s/-mtune=[^ ]*//g" | sed -e "s/-march=[^ ]*//g")"-march=i686"
 %endif
-./configure --enable-fat --build=%{_build} --host=%{_host} \
-         --program-prefix=%{?_program_prefix} \
-         --prefix=%{_prefix} \
-         --exec-prefix=%{_exec_prefix} \
-         --bindir=%{_bindir} \
-         --sbindir=%{_sbindir} \
-         --sysconfdir=%{_sysconfdir} \
-         --datadir=%{_datadir} \
-         --includedir=%{_includedir} \
-         --libdir=%{_libdir} \
-         --libexecdir=%{_libexecdir} \
-         --localstatedir=%{_localstatedir} \
-         --sharedstatedir=%{_sharedstatedir} \
-         --mandir=%{_mandir} \
-         --infodir=%{_infodir} \
-         --enable-cxx
+
 sed -e 's|^hardcode_libdir_flag_spec=.*|hardcode_libdir_flag_spec=""|g' \
     -e 's|^runpath_var=LD_RUN_PATH|runpath_var=DIE_RPATH_DIE|g' \
     -e 's|-lstdc++ -lm|-lstdc++|' \
     -i libtool
 export LD_LIBRARY_PATH=`pwd`/.libs
 make %{?_smp_mflags}
-cd ..
 
 %install
-cd base
 export LD_LIBRARY_PATH=`pwd`/.libs
 make install DESTDIR=$RPM_BUILD_ROOT
 install -m 644 gmp-mparam.h ${RPM_BUILD_ROOT}%{_includedir}
@@ -126,7 +104,6 @@ rm -f $RPM_BUILD_ROOT%{_libdir}/lib{gmp,mp,gmpxx}.la
 rm -f $RPM_BUILD_ROOT%{_infodir}/dir
 /sbin/ldconfig -n $RPM_BUILD_ROOT%{_libdir}
 ln -sf libgmpxx.so.4 $RPM_BUILD_ROOT%{_libdir}/libgmpxx.so
-cd ..
 
 # Rename gmp.h to gmp-<arch>.h and gmp-mparam.h to gmp-mparam-<arch>.h to 
 # avoid file conflicts on multilib systems and install wrapper include files
@@ -154,10 +131,8 @@ install -m644 %{SOURCE3} %{buildroot}/%{_includedir}/gmp-mparam.h
 
 %check
 %ifnarch ppc
-cd base
 export LD_LIBRARY_PATH=`pwd`/.libs
 make %{?_smp_mflags} check
-cd ..
 %endif
 
 %post -p /sbin/ldconfig
@@ -206,8 +181,8 @@ exit 0
 
 %changelog
 * Fri Feb 17 2017 David Kaspar [Dee'Kej] <dkaspar@redhat.com> - 1:6.1.2-3
-- Explicitly added '-g' option into CFLAGS & CXXFLAGS to correctly build .debug_info for i386
-- Build flags modified so the build system no longer drops LDFLAGS hardening flags
+- Build process updated to correctly build .debug_info for i386
+  and to correctly use hardening flags
 
 * Fri Feb 10 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1:6.1.2-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild