various: shellcheck fixes

core/binutils/build

@@ -6,7 +6,7 @@ printf 'makeinfo (GNU texinfo) 5.2\n'
 EOF
 
 chmod +x makeinfo
-export PATH=$PATH:$PWD
+export PATH="$PATH:$PWD"
 
 ./configure \
     --prefix=/usr \

core/grub/build

@@ -25,7 +25,7 @@ CFLAGS=$(printf %s "$CFLAGS" | sed 's/-march=[^ ]*//g')
     mkdir -p .bin
     bfd_path=$(command -v ld.bfd)
     ln -s "${bfd_path:?}" .bin/ld
-    export PATH=$PWD/.bin:$PATH
+    export PATH="$PWD/.bin:$PATH"
 
     # Strip '-B<path>mold' and '--ld-path=<path>mold' from CFLAGS.
     case $CFLAGS in *mold*)

extra/cbindgen/build

@@ -7,7 +7,7 @@
 # Set the CARGO_HOME variable to the current directory to prevent cargo from
 # touching '$HOME/.cargo'. This keeps the build contained to the package
 # manager's domain.
-export CARGO_HOME=$PWD
+export CARGO_HOME="$PWD"
 
 # Instruct the compiler to trim absolute paths in resulting binaries and instead
 # change them to relative paths ($PWD/... ./...).

extra/freetype-harfbuzz/build

@@ -37,7 +37,7 @@ build_harfbuzz() (
 # Point Freetype to the Harfbuzz files.
 export CPPFLAGS="$CPPFLAGS -I$DESTDIR/usr/include/harfbuzz"
 export LDFLAGS="$LDFLAGS -L$DESTDIR/usr/lib"
-export PKG_CONFIG_PATH=$DESTDIR/usr/lib/pkgconfig
+export PKG_CONFIG_PATH="$DESTDIR/usr/lib/pkgconfig"
 
 # Point Harfbuzz to the Freetype files.
 export CPPFLAGS="$CPPFLAGS -I$DESTDIR/usr/include/freetype2"

extra/mpv/build

@@ -13,7 +13,7 @@
     PYTHONPATH=$PWD:$(python -c "import sys;print(':'.join(sys.path))")
 
     cd -; cd ..
-    export PATH=$PWD/dist/usr/bin:$PATH
+    export PATH="$PWD/dist/usr/bin:$PATH"
     export PYTHONPATH
 }
 

wayland/libdrm/build

@@ -13,7 +13,7 @@
     PYTHONPATH=$PWD:$(python -c "import sys;print(':'.join(sys.path))")
 
     cd -; cd ..
-    export PATH=$PWD/dist/usr/bin:$PATH
+    export PATH="$PWD/dist/usr/bin:$PATH"
     export PYTHONPATH
 }