Cytoplasm/configure

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#!/usr/bin/env sh
#
# Argument Parsing
#
echo "Build Configuration"
echo "-------------------"
CFLAGS="-Wall -Wextra -pedantic -std=c89 -O3 -pipe -D_DEFAULT_SOURCE -Isrc/include"
LIBS="-lm -pthread"
# Set default args for all platforms
SCRIPT_ARGS="--lib-rtstub=RtStub --prefix=/usr/local --enable-ld-extra --lib-name=Cytoplasm --lib-version=0.4.0 --static $@"
# Set platform specific args
case "$(uname)" in
OpenBSD)
SCRIPT_ARGS="--with-libressl $SCRIPT_ARGS"
;;
*)
SCRIPT_ARGS="--with-openssl $SCRIPT_ARGS"
;;
esac
echo "Processing options..."
echo "Ran with arguments: $SCRIPT_ARGS"
# Process all arguments
for arg in $SCRIPT_ARGS; do
case "$arg" in
--with-openssl)
TLS_IMPL="OPENSSL"
TLS_LIBS="-lcrypto -lssl"
;;
--with-libressl)
TLS_IMPL="LIBRESSL"
TLS_LIBS="-ltls -lcrypto -lssl"
;;
--disable-tls)
TLS_LIBS=""
;;
--prefix=*)
PREFIX=$(echo "$arg" | cut -d '=' -f 2-)
;;
--enable-ld-extra)
LD_EXTRA="-flto -fdata-sections -ffunction-sections -s -Wl,-gc-sections"
;;
--disable-ld-extra)
LD_EXTRA=""
;;
--lib-name=*)
LIB_NAME=$(echo "$arg" | cut -d '=' -f 2-)
;;
--lib-version=*)
LIB_VERSION=$(echo "$arg" | cut -d '=' -f 2-)
;;
--enable-debug)
DEBUG="-O0 -g"
echo "Notice: --enable-debug implies --disable-ld-extra and --no-static."
echo "You must explicitly provide --enable-ld-extra and/or --static after"
echo "specifying --enable-debug if you wish to enable these features in debug mode."
LD_EXTRA=""
STATIC=""
;;
--disable-debug)
DEBUG=""
;;
--lib-rtstub=*)
STUB=$(echo "$arg" | cut -d '=' -f 2-)
;;
--static)
STATIC="-static -Wl,-static"
;;
--no-static)
STATIC=""
;;
*)
echo "Invalid argument: $1"
exit 1
;;
esac
done
if [ -n "$TLS_IMPL" ]; then
CFLAGS="${CFLAGS} -DTLS_IMPL=${TLS_IMPL}"
LIBS="${LIBS} ${TLS_LIBS}"
fi
CFLAGS="${CFLAGS} '-DLIB_NAME=\"${LIB_NAME}\"' '-DLIB_VERSION=\"${LIB_VERSION}\"' ${DEBUG}"
LDFLAGS="${LIBS} ${LD_EXTRA}"
#
# Makefile generation
#
echo "Generating Makefile..."
find_objs() {
obj_prefix="$1"
find src -name '*.c' | while IFS= read -r src; do
src=$(echo "$src" | cut -d '/' -f 2-)
obj=$(echo "$src" | sed -e 's/\.c$/.o/')
if [ "$(basename ${obj} .o)" != "${STUB}" ]; then
printf "${obj_prefix}${obj} "
fi
done
}
OBJS=$(find_objs "build/")
TAB=$(printf '\t')
find_tools() {
tools_prefix="$1"
find tools -name '*.c' | while IFS= read -r src; do
src=$(echo "$src" | cut -d '/' -f 2-)
bin=$(basename "$src" .c)
printf "${tools_prefix}${bin} "
done
}
find_docs() {
prefix="$1"
find src/include -name '*.h' | while IFS= read -r src; do
src=$(echo "$src" | cut -d '/' -f 3-)
doc=$(echo "$src" | sed -e 's/\.h$/.3/')
printf "${prefix}${doc} "
done
}
cat << EOF > Makefile
.POSIX:
# Generated by '$0' on $(date).
# This file should generally not be manually edited.
PREFIX = ${PREFIX}
CFLAGS = ${CFLAGS}
LDFLAGS = ${LDFLAGS}
all: ${LIB_NAME} docs tools
docs: $(find_docs "out/man/man3/Cytoplasm-")
tools: $(find_tools "out/bin/")
print-libs:
${TAB}@echo ${LIBS}
format:
${TAB}find . -name '*.c' | while IFS= read -r src; do \\
${TAB} if indent "\$\$src"; then \\
${TAB} rm \$\$(basename "\$\$src").BAK; \\
${TAB} fi \\
${TAB}done
license:
${TAB}find . -name '*.[ch]' | while IFS= read -r src; do \\
${TAB} srcHeader=\$\$(grep -n -m 1 '^ \*/' "\$\$src" | cut -d ':' -f 1); \\
${TAB} head -n\$\$srcHeader \$\$src | \\
${TAB} diff -u -p - "LICENSE.txt" | \\
${TAB} patch "\$\$src" | grep -v "^Hmm"; \\
${TAB}done
${LIB_NAME}: out/lib/${LIB_NAME}.o out/lib/lib${LIB_NAME}.a out/lib/lib${LIB_NAME}.so
clean:
${TAB}rm -r build out
out/lib/${LIB_NAME}.o: build/${STUB}.o
${TAB}@mkdir -p out/lib
${TAB}cp build/${STUB}.o out/lib/${LIB_NAME}.o
out/lib/lib${LIB_NAME}.a: ${OBJS}
${TAB}@mkdir -p out/lib
${TAB}\$(AR) rcs out/lib/lib${LIB_NAME}.a ${OBJS}
out/lib/lib${LIB_NAME}.so: ${OBJS}
${TAB}@mkdir -p out/lib
${TAB}\$(CC) -shared -o out/lib/lib${LIB_NAME}.so ${OBJS} ${LDFLAGS}
EOF
find src -name '*.c' | while IFS= read -r src; do
src=$(echo "$src" | cut -d '/' -f 2-)
obj=$(echo "$src" | sed -e 's/\.c$/.o/')
src="src/${src}"
obj="build/${obj}"
cc -Isrc/include -MM -MT "${obj}" "${src}" >> Makefile
echo "${TAB}@mkdir -p $(dirname ${obj})" >> Makefile
echo "${TAB}\$(CC) \$(CFLAGS) -fPIC -c -o \"${obj}\" \"${src}\"" >> Makefile
done
find tools -name '*.c' | while IFS= read -r src; do
out="out/bin/$(basename "$src" .c)"
echo "${out}: out/lib/lib${LIB_NAME}.a out/lib/lib${LIB_NAME}.so out/lib/${LIB_NAME}.o ${src}" >> Makefile
echo "${TAB}@mkdir -p out/bin" >> Makefile
echo "${TAB}\$(CC) \$(CFLAGS) -o \"${out}\" \"${src}\" out/lib/${LIB_NAME}.o -Lout/lib \$(LDFLAGS) -l${LIB_NAME} ${STATIC}" >> Makefile
done
find src/include -name '*.h' | while IFS= read -r header; do
src=$(echo "$header" | cut -d '/' -f 2-)
out=$(echo "$header" | cut -d '/' -f 3- | sed -e 's/\.h$/.3/')
echo "out/man/man3/Cytoplasm-${out}: out/bin/hdoc src/${src}" >> Makefile
echo "${TAB}@mkdir -p out/man/man3" >> Makefile
echo "${TAB}out/bin/hdoc -D \"Os=${LIB_NAME}\" -i \"src/${src}\" -o \"out/man/man3/Cytoplasm-${out}\"" >> Makefile
done
echo "Done. Run 'make' to build ${LIB_NAME}."