From 129e802fd4e0ca73f9dbae7968331d055c3a97d1 Mon Sep 17 00:00:00 2001
From: Rob Austein <sra@hactrn.net>
Date: Fri, 24 Jun 2016 17:08:20 -0400
Subject: VPATH build for libpkcs11.so, and first cut at libpkcs11.dylib for
 Mac OS X.

The Mac OS X build compiles, but is otherwise completely untested, and
won't even be testable until cryptech_rpcd support configuring
high-speed UARTs on Mac OS X (OS-specific voodoo).
---
 GNUmakefile | 99 +++++++++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 70 insertions(+), 29 deletions(-)

(limited to 'GNUmakefile')

diff --git a/GNUmakefile b/GNUmakefile
index c936c4a..62f1cba 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -31,53 +31,64 @@
 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # Locations of libraries on which this code depends.
-# This will probably need to change if we go to VPATHs.
 
-LIBHAL_DIR   = ../libhal
-LIBTFM_DIR   = ../thirdparty/libtfm
-SQLITE3_DIR  = ../thirdparty/sqlite3
+ifndef CRYPTECH_ROOT
+  CRYPTECH_ROOT := $(abspath ../..)
+endif
+
+PKCS11_DIR   ?= ${CRYPTECH_ROOT}/sw/pkcs11
+LIBHAL_DIR   ?= ${PKCS11_DIR}/libhal
+LIBTFM_DIR   ?= ${PKCS11_DIR}/libtfm
+SQLITE3_DIR  ?= ${PKCS11_DIR}/sqlite3
 
 # Whether to enable threading.  Main reason for being able to turn it
 # off is that gdb on the Novena (sometimes) goes bananas when
 # threading is enabled.
 
-ifndef ENABLE_THREADS
-  ENABLE_THREADS := yes
-endif
+ENABLE_THREADS ?= yes
 
 # Whether to enable debugging code that prints diagnostic information
 # to stderr on various conditions (mostly failures).
 
-ifndef ENABLE_DEBUGGING
-  ENABLE_DEBUGGING := no
-endif
+ENABLE_DEBUGGING ?= no
 
 # Whether to disable #warning statements; generally these are present for
 # a reason, but they can get distracting when one is attempting to debug
 # something else.
 
-ifndef ENABLE_FOOTNOTE_WARNINGS
-  ENABLE_FOOTNOTE_WARNINGS := yes
-endif
+ENABLE_FOOTNOTE_WARNINGS ?= yes
 
 # Whether to build and use our own copy of the sqlite3 library.
 
-ifndef ENABLE_OWN_SQLITE_LIBRARY
-  ENABLE_OWN_SQLITE_LIBRARY := $(if $(wildcard ${SQLITE3_DIR}),yes,no)
-endif
+ENABLE_OWN_SQLITE_LIBRARY ?= $(if $(wildcard ${CRYPTECH_ROOT}/sw/thirdparty/sqlite3),yes,no)
+
+# Target platform for shared library.  Every platform has its own
+# kinks, as does GNU libtool, so we just suck it up and do the
+# necessary kinks for the platforms we support.  Yuck.
+
+UNAME := $(shell uname)
 
-CFLAGS	:= -g3 -fPIC -Wall -std=c99 -I${LIBHAL_DIR}
-SOFLAGS := -Wl,-Bsymbolic-functions -Wl,-Bsymbolic -Wl,-z,noexecstack -Wl,-soname,libpkcs11.so.0
+# Compilation flags, etc.
+
+CFLAGS	:= -g3 -fPIC -Wall -std=c99 -I${CRYPTECH_ROOT}/sw/libhal
 LIBS	:= ${LIBHAL_DIR}/libhal.a ${LIBTFM_DIR}/libtfm.a
 
+ifeq "${UNAME}" "Darwin"
+  SONAME  := libpkcs11.dylib
+  SOFLAGS := -dynamiclib
+else
+  SONAME  := libpkcs11.so
+  SOFLAGS := -Wl,-Bsymbolic-functions -Wl,-Bsymbolic -Wl,-z,noexecstack -Wl,-soname,${SONAME}.0
+endif
+
 ifeq "${ENABLE_FOOTNOTE_WARNINGS}" "no"
   CFLAGS += -Wno-\#warnings -Wno-cpp
 endif
 
-ifeq "${ENABLE_THREADS}" "yes"
-  CFLAGS += -pthread
-else
+ifneq "${ENABLE_THREADS}" "yes"
   CFLAGS += -DUSE_PTHREADS=0
+else ifneq "${UNAME}" "Darwin"
+  CFLAGS += -pthread
 endif
 
 ifeq "${ENABLE_DEBUGGING}" "yes"
@@ -95,14 +106,30 @@ ifndef OBJCOPY
   OBJCOPY := objcopy
 endif
 
-all: libpkcs11.so p11util py11/attribute_map.py
+all: ${SONAME} p11util py11/attribute_map.py
 
 clean:
-	rm -rf pkcs11.o pkcs11.so libpkcs11.so* p11util p11util.o schema.h attributes.h
+	rm -rf *.o ${SONAME}* p11util schema.h attributes.h
+	cd libtfm; ${MAKE} $@
+	cd libhal; ${MAKE} $@
+ifeq "${ENABLE_OWN_SQLITE_LIBRARY}" "yes"
+	cd sqlite3; ${MAKE} $@
+endif
 
 distclean: clean
 	rm -f TAGS
 
+.FORCE:
+
+${LIBTFM_DIR}/libtfm.a: .FORCE
+	cd libtfm; ${MAKE}
+
+${LIBHAL_DIR}/libhal.a: .FORCE ${LIBTFM_DIR}/libtfm.a
+	cd libhal; ${MAKE} daemon
+
+${SQLITE3_DIR}/libsqlite3.a: .FORCE
+	cd sqlite3; ${MAKE}
+
 schema.h: schema.sql scripts/convert-schema.sed GNUmakefile
 	sed -f scripts/convert-schema.sed <schema.sql >schema.h
 
@@ -112,14 +139,28 @@ attributes.h: attributes.yaml scripts/build-attributes GNUmakefile
 py11/attribute_map.py: attributes.yaml scripts/build-py11-attributes GNUmakefile
 	python scripts/build-py11-attributes attributes.yaml py11/attribute_map.py
 
-pkcs11.o: pkcs11.c schema.h attributes.h
+pkcs11.o: pkcs11.c schema.h attributes.h ${LIBS}
 	${CC} ${CFLAGS} -c $<
 
-pkcs11.so: pkcs11.o ${LIBS}
-	${CC} ${CFLAGS} -shared -o $@ $^ ${SOFLAGS} ${LDFLAGS}
+ifeq "${ENABLE_OWN_SQLITE_LIBRARY}" "yes"
+  pkcs11.o: ${SQLITE3_DIR}/libsqlite3.a
+endif
+
+ifeq "${UNAME}" "Darwin"
 
-libpkcs11.so: pkcs11.so
-	${OBJCOPY} -w -G 'C_*' $< $@
+  ${SONAME}: pkcs11.o ${LIBS}
+	nm $< | awk 'NF == 3 && $$2 == "T" && $$3 ~ /^_C_/ {print $$3}' >$@.tmp
+	${CC} -Wl,-exported_symbols_list,$@.tmp -o $@ $^ ${SOFLAGS} ${LDFLAGS}
+	rm -f $@.tmp
+
+else
+
+  ${SONAME}: pkcs11.o ${LIBS}
+	${CC} ${CFLAGS} -shared -o $@.tmp $^ ${SOFLAGS} ${LDFLAGS}
+	${OBJCOPY} -w -G 'C_*' $@.tmp $@
+	rm -f $@.tmp
+
+endif
 
 p11util.o: p11util.c schema.h
 	${CC} ${CFLAGS} -c $<
@@ -144,7 +185,7 @@ HSMBULLY := $(firstword $(wildcard $(addsuffix /hsmbully,$(subst :, ,.:${PATH}))
 ifneq "${HSMBULLY}" ""
 
   HSMBULLY_OPTIONS := \
-	--pin fnord --so-pin fnord --pkcs11lib $(abspath libpkcs11.so) \
+	--pin fnord --so-pin fnord --pkcs11lib $(abspath ${SONAME}) \
 	--verbose=9 --fast-and-frivolous --skip-fragmentation --skip-keysizing
 
   HSMBULLY_DATABASE=$(abspath hsmbully.pkcs11.db)
-- 
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