#!/bin/sh
# First argument of this script is the package name

# Reading system configuration informations, functions and package versions.
source ../sysinfos
source ../functions
source ../packages-list

# Saves CFLAGS and CXXFLAGS, and clears them.
save_flags_no_optimizations

# Applying a sed substitution that will suppress the installation of
# libiberty.a. We want to use the Binutils version of libiberty.a
cd ${LFS_TMP}/${1} &&
sed -i 's/install_to_$(INSTALL_DEST) //' libiberty/Makefile.in &&

# The bootstrap build performed in pass1 built GCC with the -fomit-frame-pointer
# compiler flag. Non-bootstrap builds omit this flag by default, so the following sed
# command is used in order to ensure consistent compiler builds.
sed -i 's/^XCFLAGS =$/& -fomit-frame-pointer/' gcc/Makefile.in &&

# Suppressing the running of the fixincludes script. */
sed -i 's@\./fixinc\.sh@-c true@' gcc/Makefile.in &&

# GCC provides a gccbug script which detects at compile time whether
# mktemp is present, and hardcodes the result in a test. This will
# cause the script to fall back to using less random names for temporary
# files. We will be installing mktemp later, so the following sed will
# simulate its presence:
sed -i 's/@have_mktemp_command@/yes/' gcc/gccbug.in &&

cd ${LFS_TMP}/${1}-build &&
../${1}/configure \
    --prefix=/usr \
    --libexecdir=/usr/lib \
    --enable-shared \
    --enable-threads=posix \
    --enable-__cxa_atexit \
    --enable-clocale=gnu \
    --enable-languages=c,c++ \
    --disable-bootstrap &&
make -j ${MAKEJOBS} &&
make install &&
ln -v -sf ../usr/bin/cpp /lib &&
ln -v -sf gcc /usr/bin/cc &&

# Performing compilation test...
echo 'main(){}' > dummy.c &&
cc dummy.c &&
readelf -l a.out | grep ': /lib' 1> /dev/null 2>&1 &&
rm dummy.c a.out &&

# Restore original CFLAGS and CXXFLAGS values.
restore_flags

# Return last error
exit $?