sci-misc/boinc-wrapper: fix cflags

Also don't link C++ stdlib statically and mark implicit decls.

Closes: https://bugs.gentoo.org/887995
Closes: https://bugs.gentoo.org/904138
Closes: https://bugs.gentoo.org/922046
Signed-off-by: Anna (cybertailor) Vyalkova <cyber+gentoo@sysrq.in>

sci-misc/boinc-wrapper/boinc-wrapper-26018-r3.ebuild

@@ -13,16 +13,18 @@ LICENSE="Info-ZIP LGPL-3+ regexp-UofT"
 SLOT="0"
 KEYWORDS="~amd64 ~arm64 ~x86"
 
-# libboinc-api dependencies
-# no subslot, because "-Wl,--as-needed" removes them
-DEPEND="
-	dev-libs/openssl
-	media-libs/freeglut
-	media-libs/libjpeg-turbo
-"
-
 DOCS=( job.xml )
 
+PATCHES=(
+	"${FILESDIR}"/${PN}-26018-makefile.patch
+	"${FILESDIR}"/${PN}-26018-sigstop.patch
+)
+
+QA_CONFIG_IMPL_DECL_SKIP=(
+	# https://bugs.gentoo.org/922046
+	"_mm*"
+)
+
 src_prepare() {
 	default
 	eautoreconf
@@ -30,12 +32,26 @@ src_prepare() {
 
 src_configure() {
 	edo bash generate_svn_version.sh
-	econf --enable-static --enable-pkg-devel --disable-fcgi
+
+	local myeconfargs=(
+		# build libraries only
+		--enable-pkg-devel
+		--disable-fcgi
+
+		# link with libboinc_api statically
+		--disable-shared
+		--enable-static
+
+		# do not build libboinc_graphics
+		--without-x
+		ax_cv_check_gl_libgl=no
+	)
+	econf "${myeconfargs[@]}"
 }
 
 src_compile() {
 	emake
-	emake -C samples/wrapper
+	emake -C samples/wrapper MAKEFILE_LDFLAGS="-lpthread" MAKEFILE_STDLIB=
 }
 
 src_install() {

sci-misc/boinc-wrapper/files/boinc-wrapper-26018-makefile.patch

@@ -0,0 +1,13 @@
+Bug: https://bugs.gentoo.org/904138
+
+--- a/samples/wrapper/Makefile
++++ b/samples/wrapper/Makefile
+@@ -22,7 +22,7 @@ else
+   MAKEFILE_STDLIB  = libstdc++.a
+ endif
+ 
+-CXXFLAGS += -g -O0 \
++CXXFLAGS += \
+ 	-Wall -W -Wshadow -Wpointer-arith -Wcast-qual -Wcast-align -Wwrite-strings -fno-common \
+     -I$(BOINC_DIR) \
+     -I$(BOINC_LIB_DIR) \