[make-initrd] [PATCH v1 10/11] feature/procacct: Make procacct optional

[Alexey Gladkov <gladkov.alexey@gmail.com>]

Signed-off-by: Alexey Gladkov <gladkov.alexey@gmail.com>
---
 Makefile.in                             | 10 +++++++
 configure.ac                            | 36 +++++++++++++++++++++++++
 features/debug-procacct/src/Makefile.mk |  7 ++---
 3 files changed, 48 insertions(+), 5 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 45053fa0..c26a3f44 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -90,8 +90,15 @@ HAVE_LIBINIPARSER        := @HAVE_LIBINIPARSER@
 HAVE_LIBINIPARSER_LIBS   := @HAVE_LIBINIPARSER_LIBS@
 HAVE_LIBINIPARSER_CFLAGS := @HAVE_LIBINIPARSER_CFLAGS@
 
+HAVE_LIBBPF        := @HAVE_LIBBPF@
+HAVE_LIBBPF_LIBS   := @HAVE_LIBBPF_LIBS@
+HAVE_LIBBPF_CFLAGS := @HAVE_LIBBPF_CFLAGS@
+
 USE_FEATURE_BOOTLOADER = @USE_FEATURE_BOOTLOADER@
+USE_FEATURE_PROCACCT = @USE_FEATURE_PROCACCT@
 
+CLANG ?= @CLANG@
+LLVM_STRIP ?= @LLVM_STRIP@
 YACC := @YACC@
 LEX  := @LEX@
 
@@ -108,6 +115,9 @@ SKIP_FEATURES =
 ifeq ($(USE_FEATURE_BOOTLOADER),no)
 SKIP_FEATURES += bootloader
 endif
+ifeq ($(USE_FEATURE_PROCACCT),no)
+SKIP_FEATURES += debug-procacct
+endif
 
 all: build
 
diff --git a/configure.ac b/configure.ac
index 9633a2ba..db2575e4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -314,6 +314,41 @@ if test "x$with_feature_bootloader" != xno; then
 	fi
 fi
 
+AC_ARG_WITH([feature-procacct],
+	[AS_HELP_STRING([--with-feature-procacct],
+			[build procacct feature (default: auto)])],
+	[],
+	[: m4_divert_text([DEFAULTS], [with_feature_procacct=auto])])
+
+USE_FEATURE_PROCACCT=no
+HAVE_LIBBPF=no
+
+if test "x$with_feature_procacct" != xno; then
+	PKG_CHECK_MODULES(HAVE_LIBBPF, libbpf, [HAVE_LIBBPF=yes], [HAVE_LIBBPF=no]);
+	AC_PATH_PROGS([with_clang], [clang])
+	AC_PATH_PROGS([with_llvm_strip], [llvm-strip])
+
+	if test "x$with_feature_procacct" != xauto; then
+		AS_IF([test "x$HAVE_LIBBPF" != xyes],
+			[AC_MSG_ERROR([libbpf was not found: https://github.com/libbpf/libbpf])])
+		AS_IF([! test -x "$with_clang"],
+			[AC_MSG_ERROR([required utility not found: clang])])
+	fi
+
+	if test "x-$HAVE_LIBBPF" = x-yes && test -x "$with_clang"; then
+		USE_FEATURE_PROCACCT=yes
+	fi
+
+	if ! test -x "$with_llvm_strip"; then
+		with_llvm_strip=/bin/true
+	fi
+
+	AC_SUBST([HAVE_LIBBPF])
+	AC_SUBST([CLANG], [$with_clang])
+	AC_SUBST([LLVM_STRIP], [$with_llvm_strip])
+fi
+
+
 AC_SUBST([HAVE_GZIP])
 AC_SUBST([HAVE_BZIP2])
 AC_SUBST([HAVE_LZMA])
@@ -326,6 +361,7 @@ AC_SUBST([HAVE_LIBINIPARSER])
 AC_SUBST([HAVE_LIBINIPARSER_LIBS])
 AC_SUBST([HAVE_LIBINIPARSER_CFLAGS])
 AC_SUBST([USE_FEATURE_BOOTLOADER])
+AC_SUBST([USE_FEATURE_PROCACCT])
 AC_SUBST([MKLOCAL])
 AC_SUBST([YACC])
 AC_SUBST([LEX])
diff --git a/features/debug-procacct/src/Makefile.mk b/features/debug-procacct/src/Makefile.mk
index 505d8288..43589b1a 100644
--- a/features/debug-procacct/src/Makefile.mk
+++ b/features/debug-procacct/src/Makefile.mk
@@ -1,16 +1,13 @@
 procacct_DEST = $(dest_data_bindir)/procacct
 procacct_SRCS = $(FEATURESDIR)/debug-procacct/src/procacct.c
-procacct_CFLAGS = -D_GNU_SOURCE -Idatasrc/libinitramfs -DPROCACCT_BPF_FILE=\"/bin/procacct-bpf.o\"
-procacct_LIBS = -L$(dest_data_libdir) -linitramfs -lbpf
+procacct_CFLAGS = -D_GNU_SOURCE -Idatasrc/libinitramfs $(HAVE_LIBBPF_CFLAGS) -DPROCACCT_BPF_FILE=\"/bin/procacct-bpf.o\"
+procacct_LIBS = -L$(dest_data_libdir) -linitramfs $(HAVE_LIBBPF_LIBS)
 
 PROGS += procacct
 
 procacct_bpf_DEST = $(dest_data_bindir)/procacct-bpf.o
 procacct_bpf_SRCS = $(FEATURESDIR)/debug-procacct/src/procacct-bpf.c
 
-CLANG ?= clang-15
-LLVM_STRIP = llvm-strip
-
 $(dest_data_bindir)/procacct-bpf.o: $(procacct_bpf_SRCS)
 	$(Q)mkdir -p -- $(dir $@)
 	$(call quiet_cmd,BPF,$@,$(CLANG)) -target bpf -g -O2 -Wall -Wextra -o $@ -c $<
-- 
2.33.8