yoink some KISS linux gcc tidbits

gcc/build

@@ -1,27 +1,46 @@
 wget -O gcc-11.1.0.tar.gz https://gcc.gnu.org/pub/gcc/releases/gcc-11.1.0/gcc-11.1.0.tar.xz 
 tar -xf gcc-11.1.0.tar.gz
 cd gcc-11.1.0
-wget https://ftp.gnu.org/gnu/gmp/gmp-6.2.1.tar.xz
-wget https://ftp.gnu.org/gnu/mpfr/mpfr-4.1.0.tar.xz
-wget https://ftp.gnu.org/gnu/mpc/mpc-1.2.1.tar.gz
-tar -xf gmp-6.2.1.tar.xz
-tar -xf mpfr-4.1.0.tar.xz
-tar -xf mpc-1.2.1.tar.gz
 
-mv gmp-6.2.1 gmp
-mv mpfr-4.1.0 mpfr
-mv mpc-1.2.1 mpc
+# Use lib not lib64 by default.
+sed '/m64=/s/lib64/lib/' gcc/gcc/config/i386/t-linux64 > _
+mv -f _ gcc/gcc/config/i386/t-linux64
+sed 's/lib64/lib/' gcc/gcc/config/i386/linux64.h > _
+mv -f _ gcc/gcc/config/i386/linux64.h
 
-sed -i '/m64=/s/lib64/lib/' ./config/i386/t-linux64
-sed -i 's/lib64/lib/'       ./config/i386/linux64.h
 mkdir build
 cd build
 
-../configure --prefix=/usr --enable-languages=c,c++,d,fortran,go,objc,obj-c++
+../configure \
+    --prefix=/usr \
+    --libexecdir=/usr/lib \
+    --mandir=/usr/share/man \
+    --infodir=/usr/share/info \
+    --disable-multilib \
+    --disable-symvers \
+    --disable-libmpx \
+    --disable-libmudflap \
+    --disable-libsanitizer \
+    --disable-werror \
+    --disable-fixed-point \
+    --disable-libstdcxx-pch \
+    --disable-nls \
+    --enable-checking=release \
+    --enable-__cxa_atexit \
+    --enable-default-pie \
+    --enable-default-ssp \
+    --enable-shared \
+    --enable-threads \
+    --enable-tls \
+    --enable-languages=c,c++
+
 make
 make DESTDIR="$1" install
 
-ln -s gcc "$1/usr/bin/cc"
-echo "#!/bin/sh" > "$1"/usr/bin/c99
-echo "exec cc -std=c99 "$@"" >> "$1"/usr/bin/c99
-chmod +x "$1"/usr/bin/c99
+# Save 35MB. (from KISS)
+find "$1" -name libgtkpeer.a  -exec rm -f {} +
+find "$1" -name libgjsmalsa.a -exec rm -f {} +
+find "$1" -name libgij.a      -exec rm -f {} +
+
+ln -sf gcc "$1/usr/bin/cc"
+cp -f ../c99 "$1/usr/bin"