From d0e5c20fda92fcc48109bce7055d5fad458579ca Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 4 Nov 2020 22:46:20 +0100 Subject: [PATCH] build system fixes This touches up the homebrewed build system to work much better "out of the box" for people. Specifically: - allow toolchain vars to be set via environment - CC / BUILD_CC / AR / RANLIB - CFLAGS / CPPFLAGS / LDFLAGS - split CPPFLAGS out of CFLAGS - break -fPIC out of global CFLAGS and only use where needed - use LDLIBS for libraries, not LDFLAGS Signed-off-by: Mike Frysinger Forward ported from libcap-2.24 to libcap-2.25 Forward ported from libcap-2.25 to libcap-2.28 Forward ported from libcap-2.28 to libcap-2.29 Forward ported from libcap-2.29 to libcap-2.33 Forward ported from libcap-2.33 to libcap-2.34 Forward ported from libcap-2.34 to libcap-2.37 Forward ported from libcap-2.37 to libcap-2.39 Forward ported from libcap-2.39 to libcap-2.42 Forward ported from libcap-2.42 to libcap-2.44 Forward ported from libcap-2.44 to libcap-2.45 Forward ported from libcap-2.45 to libcap-2.48 Signed-off-by: Lars Wendler --- a/Make.Rules +++ b/Make.Rules @@ -52,7 +52,6 @@ GOMAJOR=0 # Compilation specifics KERNEL_HEADERS := $(topdir)/libcap/include/uapi -IPATH += -fPIC -I$(KERNEL_HEADERS) -I$(topdir)/libcap/include CC := $(CROSS_COMPILE)gcc DEFINES := -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 @@ -60,7 +59,7 @@ COPTS ?= -O2 CFLAGS ?= $(COPTS) $(DEFINES) BUILD_CC ?= $(CC) BUILD_COPTS ?= -O2 -BUILD_CFLAGS ?= $(BUILD_COPTS) $(DEFINES) $(IPATH) +BUILD_CFLAGS ?= $(CFLAGS) AR := $(CROSS_COMPILE)ar RANLIB := $(CROSS_COMPILE)ranlib DEBUG = -g #-DDEBUG @@ -76,10 +75,13 @@ LIBPSXLIB := -L$(topdir)/libcap -lpsx $(PSXLINKFLAGS) BUILD_GPERF := $(shell which gperf >/dev/null 2>/dev/null && echo yes) -SYSTEM_HEADERS = /usr/include +LIBCAP_CPPFLAGS = -I$(KERNEL_HEADERS) -I$(topdir)/libcap/include $(DEFINES) +CPPFLAGS += $(LIBCAP_CPPFLAGS) +BUILD_CPPFLAGS += $(LIBCAP_CPPFLAGS) INCS=$(topdir)/libcap/include/sys/capability.h LDFLAGS += -L$(topdir)/libcap -CFLAGS += -Dlinux $(WARNINGS) $(DEBUG) +CPPFLAGS += -Dlinux +CFLAGS += $(WARNINGS) $(DEBUG) INDENT := $(shell if [ -n "$$(which indent 2>/dev/null)" ]; then echo "| indent -kr" ; fi) # SHARED tracks whether or not the SHARED libraries (libcap.so, --- a/Makefile +++ b/Makefile @@ -17,7 +17,6 @@ ifeq ($(GOLANG),yes) $(MAKE) -C go $@ rm -f cap/go.sum endif - $(MAKE) -C tests $@ $(MAKE) -C progs $@ $(MAKE) -C doc $@ $(MAKE) -C kdebug $@ --- a/libcap/Makefile +++ b/libcap/Makefile @@ -25,6 +25,7 @@ MINCAPLIBNAME=$(MAJCAPLIBNAME).$(MINOR) PSXOBJS=$(addsuffix .o, $(PSXFILES)) MAJPSXLIBNAME=$(PSXLIBNAME).$(VERSION) MINPSXLIBNAME=$(MAJPSXLIBNAME).$(MINOR) +CFLAGS += -fPIC all: pcs $(STACAPLIBNAME) ifeq ($(SHARED),yes) @@ -66,7 +67,7 @@ libpsx.pc: libpsx.pc.in $< >$@ _makenames: _makenames.c cap_names.list.h - $(BUILD_CC) $(BUILD_CFLAGS) $< -o $@ + $(BUILD_CC) $(BUILD_CFLAGS) $(BUILD_CPPFLAGS) $< -o $@ cap_names.h: _makenames ./_makenames > cap_names.h @@ -105,10 +106,10 @@ $(PSXLIBNAME) $(MAJPSXLIBNAME) $(MINPSXLIBNAME): $(PSXOBJS) include/sys/psx_sysc endif %.o: %.c $(INCLS) - $(CC) $(CFLAGS) $(IPATH) -c $< -o $@ + $(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@ cap_text.o: cap_text.c $(USE_GPERF_OUTPUT) $(INCLS) - $(CC) $(CFLAGS) $(IPATH) $(INCLUDE_GPERF_OUTPUT) -c $< -o $@ + $(CC) $(CFLAGS) $(CPPFLAGS) $(INCLUDE_GPERF_OUTPUT) -c $< -o $@ cap_test: cap_test.c libcap.h $(CC) $(CFLAGS) $(IPATH) $< -o $@ --- a/pam_cap/Makefile +++ b/pam_cap/Makefile @@ -3,6 +3,8 @@ topdir=$(shell pwd)/.. include ../Make.Rules +CFLAGS += -fPIC + all: pam_cap.so $(MAKE) testlink @@ -16,16 +18,16 @@ install: all # written (and you know why it fails), email me and explain why. Thanks! pam_cap.so: pam_cap.o - $(LD) -o pam_cap.so $< $(LIBCAPLIB) $(LDFLAGS) + $(LD) $(CFLAGS) -o pam_cap.so $< $(LIBCAPLIB) $(LDFLAGS) pam_cap.o: pam_cap.c - $(CC) $(CFLAGS) $(IPATH) -c $< -o $@ + $(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@ test_pam_cap: test_pam_cap.c pam_cap.c $(CC) $(CFLAGS) $(IPATH) -o $@ test_pam_cap.c $(LIBCAPLIB) $(LDFLAGS) --static testlink: test.c pam_cap.o - $(CC) $(CFLAGS) -o $@ $+ -lpam -ldl $(LIBCAPLIB) $(LDFLAGS) + $(CC) $(CFLAGS) $(CPPFLAGS) -o $@ $+ -lpam -ldl $(LIBCAPLIB) $(LDFLAGS) test: pam_cap.so make testlink --- a/progs/Makefile +++ b/progs/Makefile @@ -28,7 +28,7 @@ $(BUILD): %: %.o $(DEPS) $(CC) $(CFLAGS) -o $@ $< $(LIBCAPLIB) $(LDFLAGS) %.o: %.c $(INCS) - $(CC) $(IPATH) $(CAPSH_SHELL) $(CFLAGS) -c $< -o $@ + $(CC) $(CAPSH_SHELL) $(CFLAGS) $(CPPFLAGS) -c $< -o $@ install: all mkdir -p -m 0755 $(FAKEROOT)$(SBINDIR) --- a/tests/Makefile +++ b/tests/Makefile @@ -13,6 +13,8 @@ ifeq ($(PTHREADS),yes) make psx_test libcap_psx_test libcap_psx_launch_test endif +CFLAGS += -fPIC + install: all ifeq ($(DYNAMIC),yes) @@ -62,13 +64,13 @@ run_psx_test: psx_test ./psx_test psx_test: psx_test.c $(DEPS) - $(CC) $(CFLAGS) $(IPATH) $< -o $@ $(LINKEXTRA) $(LIBPSXLIB) $(LDFLAGS) + $(CC) $(CFLAGS) $(CPPFLAGS) $< -o $@ $(LINKEXTRA) $(LIBPSXLIB) $(LDFLAGS) run_libcap_psx_test: libcap_psx_test ./libcap_psx_test libcap_psx_test: libcap_psx_test.c $(DEPS) - $(CC) $(CFLAGS) $(IPATH) $< -o $@ $(LINKEXTRA) $(LIBCAPLIB) $(LIBPSXLIB) $(LDFLAGS) + $(CC) $(CFLAGS) $(CPPFLAGS) $< -o $@ $(LINKEXTRA) $(LIBCAPLIB) $(LIBPSXLIB) $(LDFLAGS) # privileged run_libcap_launch_test: libcap_launch_test noop ../progs/tcapsh-static