termux-packages/packages/emacs/build.sh

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TERMUX_PKG_HOMEPAGE=https://www.gnu.org/software/emacs/
TERMUX_PKG_DESCRIPTION="Extensible, customizable text editor-and more"
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TERMUX_PKG_LICENSE="GPL-3.0"
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TERMUX_PKG_VERSION=26.3
TERMUX_PKG_REVISION=6
TERMUX_PKG_SRCURL=https://mirrors.kernel.org/gnu/emacs/emacs-${TERMUX_PKG_VERSION}.tar.xz
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TERMUX_PKG_SHA256=4d90e6751ad8967822c6e092db07466b9d383ef1653feb2f95c93e7de66d3485
TERMUX_PKG_DEPENDS="ncurses, gnutls, libxml2"
TERMUX_PKG_BREAKS="emacs-dev"
TERMUX_PKG_REPLACES="emacs-dev"
TERMUX_PKG_SERVICE_SCRIPT=("emacsd" 'exec emacs --fg-daemon 2>&1')
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TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
--disable-autodepend
--with-gif=no
--with-gnutls
--with-jpeg=no
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--without-gconf
--without-gsettings
--without-lcms2
--without-x
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--with-png=no
--with-tiff=no
--with-xml2
--with-xpm=no
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--without-dbus
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"
# Ensure use of system malloc:
TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" emacs_cv_sanitize_address=yes"
# Prevent configure from adding -nopie:
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TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" emacs_cv_prog_cc_no_pie=no"
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# Prevent linking against libelf:
TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" ac_cv_lib_elf_elf_begin=no"
# implemented using dup3(), which fails if oldfd == newfd
TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" gl_cv_func_dup2_works=no"
# disable setrlimit function to make termux-am work from within emacs
TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" ac_cv_func_setrlimit=no"
if [ "$TERMUX_ARCH" == "arm" ] || [ "$TERMUX_ARCH" == "i686" ]; then
# setjmp does not work properly on 32bit android:
# https://github.com/termux/termux-packages/issues/2599
TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" emacs_cv_func__setjmp=no"
TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" emacs_cv_func_sigsetjmp=no"
fi
TERMUX_PKG_HOSTBUILD=true
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# Remove some irrelevant files:
TERMUX_PKG_RM_AFTER_INSTALL="
bin/grep-changelog
share/applications/emacs.desktop
share/emacs/${TERMUX_PKG_VERSION}/etc/emacs.desktop
share/emacs/${TERMUX_PKG_VERSION}/etc/emacs.icon
share/emacs/${TERMUX_PKG_VERSION}/etc/images
share/emacs/${TERMUX_PKG_VERSION}/etc/refcards
share/emacs/${TERMUX_PKG_VERSION}/etc/tutorials/TUTORIAL.*
share/icons
share/info/dir
share/man/man1/grep-changelog.1.gz
"
# Remove ctags from the emacs package to prevent conflicting with
# the Universal Ctags from the 'ctags' package (the bin/etags
# program still remain in the emacs package):
TERMUX_PKG_RM_AFTER_INSTALL+=" bin/ctags share/man/man1/ctags.1 share/man/man1/ctags.1.gz"
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termux_step_post_extract_package() {
# Certain packages are not safe to build on device because their
# build.sh script deletes specific files in $TERMUX_PREFIX.
if $TERMUX_ON_DEVICE_BUILD; then
termux_error_exit "Package '$TERMUX_PKG_NAME' is not safe for on-device builds."
fi
# XXX: We have to start with new host build each time
# to avoid build error when cross compiling.
rm -Rf $TERMUX_PKG_HOSTBUILD_DIR
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# Termux only use info pages for emacs. Remove the info directory
# to get a clean Info directory file dir.
rm -Rf $TERMUX_PREFIX/share/info
# We cannot run a dumped emacs on Android 5.0+ due to the pie requirement.
# Also, the native emacs we build (bootstrap-emacs) cannot used dumps when
# building inside docker: https://github.com/docker/docker/issues/22801
export CANNOT_DUMP=yes
}
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termux_step_host_build() {
# Build a bootstrap-emacs binary to be used in termux_step_post_configure.
local NATIVE_PREFIX=$TERMUX_PKG_TMPDIR/emacs-native
mkdir -p $NATIVE_PREFIX/share/emacs/$TERMUX_PKG_VERSION
ln -s $TERMUX_PKG_SRCDIR/lisp $NATIVE_PREFIX/share/emacs/$TERMUX_PKG_VERSION/lisp
$TERMUX_PKG_SRCDIR/configure --prefix=$NATIVE_PREFIX --without-all --with-x-toolkit=no
make -j $TERMUX_MAKE_PROCESSES
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}
termux_step_post_configure() {
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cp $TERMUX_PKG_HOSTBUILD_DIR/src/bootstrap-emacs $TERMUX_PKG_BUILDDIR/src/bootstrap-emacs
cp $TERMUX_PKG_HOSTBUILD_DIR/lib-src/make-docfile $TERMUX_PKG_BUILDDIR/lib-src/make-docfile
# Update timestamps so that the binaries does not get rebuilt:
touch -d "next hour" $TERMUX_PKG_BUILDDIR/src/bootstrap-emacs $TERMUX_PKG_BUILDDIR/lib-src/make-docfile
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}
termux_step_post_make_install() {
cp $TERMUX_PKG_BUILDER_DIR/site-init.el $TERMUX_PREFIX/share/emacs/${TERMUX_PKG_VERSION}/lisp/emacs-lisp/
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}
termux_step_create_debscripts() {
cat <<- EOF > ./postinst
#!$TERMUX_PREFIX/bin/sh
if [ "\$1" = "configure" ] || [ "\$1" = "abort-upgrade" ]; then
if [ -x "$TERMUX_PREFIX/bin/update-alternatives" ]; then
update-alternatives --install \
$TERMUX_PREFIX/bin/editor editor $TERMUX_PREFIX/bin/emacs 40
fi
fi
EOF
cat <<- EOF > ./prerm
#!$TERMUX_PREFIX/bin/sh
if [ "\$1" != "upgrade" ]; then
if [ -x "$TERMUX_PREFIX/bin/update-alternatives" ]; then
update-alternatives --remove editor $TERMUX_PREFIX/bin/emacs
fi
fi
EOF
}