Merge bitcoin/bitcoin#27406: depends: add NO_HARDEN= option

436df1e depends: add NO_HARDEN option (fanquake)

Pull request description:

  Add an option that when passed, will disable hardening options, and pass `--disable-hardening` through to configure. Due to the way we link `libssp` for Windows builds, they now fail (after #27118), if building with depends, and configuring with `--disable-hardening` (Windows is the odd build out here). See: bitcoin/bitcoin#27118 (comment).

  This change would add a depends option such that, if someone wants to build with depends, for Windows, without hardening, they can do so. This may also be useful when building for debugging.

ACKs for top commit:
  hebasto:
    re-ACK 436df1e

Tree-SHA512: 5a3ef5ec87b10a5ad0a284201988ce94789451735c7c7e20d337f7232955b0b9a0addab1c3b5725755f00d8ce6741aa9c8cb5e3d48d926515b7dde46acdbcaa0

Author: fanquake

depends/Makefile

@@ -45,6 +45,7 @@ NO_USDT ?=
 NO_NATPMP ?=
 MULTIPROCESS ?=
 LTO ?=
+NO_HARDEN ?=
 FALLBACK_DOWNLOAD_PATH ?= https://bitcoincore.org/depends-sources
 
 C_STANDARD ?= c11
@@ -146,8 +147,8 @@ include packages/packages.mk
 #     2. Before including packages/*.mk (excluding packages/packages.mk), since
 #        they rely on the build_id variables
 #
-build_id:=$(shell env CC='$(build_CC)' C_STANDARD='$(C_STANDARD)' CXX='$(build_CXX)' CXX_STANDARD='$(CXX_STANDARD)' AR='$(build_AR)' RANLIB='$(build_RANLIB)' STRIP='$(build_STRIP)' SHA256SUM='$(build_SHA256SUM)' DEBUG='$(DEBUG)' LTO='$(LTO)' ./gen_id '$(BUILD_ID_SALT)' 'GUIX_ENVIRONMENT=$(realpath $(GUIX_ENVIRONMENT))')
-$(host_arch)_$(host_os)_id:=$(shell env CC='$(host_CC)' C_STANDARD='$(C_STANDARD)' CXX='$(host_CXX)' CXX_STANDARD='$(CXX_STANDARD)' AR='$(host_AR)' RANLIB='$(host_RANLIB)' STRIP='$(host_STRIP)' SHA256SUM='$(build_SHA256SUM)' DEBUG='$(DEBUG)' LTO='$(LTO)' ./gen_id '$(HOST_ID_SALT)' 'GUIX_ENVIRONMENT=$(realpath $(GUIX_ENVIRONMENT))')
+build_id:=$(shell env CC='$(build_CC)' C_STANDARD='$(C_STANDARD)' CXX='$(build_CXX)' CXX_STANDARD='$(CXX_STANDARD)' AR='$(build_AR)' RANLIB='$(build_RANLIB)' STRIP='$(build_STRIP)' SHA256SUM='$(build_SHA256SUM)' DEBUG='$(DEBUG)' LTO='$(LTO)' NO_HARDEN='$(NO_HARDEN)' ./gen_id '$(BUILD_ID_SALT)' 'GUIX_ENVIRONMENT=$(realpath $(GUIX_ENVIRONMENT))')
+$(host_arch)_$(host_os)_id:=$(shell env CC='$(host_CC)' C_STANDARD='$(C_STANDARD)' CXX='$(host_CXX)' CXX_STANDARD='$(CXX_STANDARD)' AR='$(host_AR)' RANLIB='$(host_RANLIB)' STRIP='$(host_STRIP)' SHA256SUM='$(build_SHA256SUM)' DEBUG='$(DEBUG)' LTO='$(LTO)' NO_HARDEN='$(NO_HARDEN)' ./gen_id '$(HOST_ID_SALT)' 'GUIX_ENVIRONMENT=$(realpath $(GUIX_ENVIRONMENT))')
 
 boost_packages_$(NO_BOOST) = $(boost_packages)
 
@@ -253,6 +254,7 @@ $(host_prefix)/share/config.site : config.site.in $(host_prefix)/.stamp_$(final_
             -e 's|@no_natpmp@|$(NO_NATPMP)|' \
             -e 's|@multiprocess@|$(MULTIPROCESS)|' \
             -e 's|@lto@|$(LTO)|' \
+            -e 's|@no_harden@|$(NO_HARDEN)|' \
             -e 's|@debug@|$(DEBUG)|' \
             $< > $@
 	touch $@

depends/README.md

@@ -123,6 +123,7 @@ The following can be set when running make: `make FOO=bar`
   resides in the `depends` directory, and the log file is printed out automatically in case
   of build error. After successful build log files are moved along with package archives
 - `LTO`: Use LTO when building packages.
+- `NO_HARDEN=1`: Don't use hardening options when building packages
 
 If some packages are not built, for example `make NO_WALLET=1`, the appropriate
 options will be passed to bitcoin's configure. In this case, `--disable-wallet`.

depends/config.site.in

@@ -82,6 +82,10 @@ if test -z "$enable_lto" && test -n "@lto@"; then
   enable_lto=yes
 fi
 
+if test -z "$enable_hardening" && test -n "@no_harden@"; then
+  enable_hardening=no
+fi
+
 PKG_CONFIG="$(which pkg-config) --static"
 
 PKG_CONFIG_PATH="${depends_prefix}/share/pkgconfig:${depends_prefix}/lib/pkgconfig"

depends/gen_id

@@ -2,7 +2,7 @@
 
 # Usage: env [ CC=... ] [ C_STANDARD=...] [ CXX=... ] [CXX_STANDARD=...] \
 #            [ AR=... ] [ RANLIB=... ] [ STRIP=... ] [ DEBUG=... ] \
-#            [ LTO=... ] ./build-id [ID_SALT]...
+#            [ LTO=... ] [ NO_HARDEN=... ] ./build-id [ID_SALT]...
 #
 # Prints to stdout a SHA256 hash representing the current toolset, used by
 # depends/Makefile as a build id for caching purposes (detecting when the
@@ -70,6 +70,10 @@
     echo "LTO=${LTO}"
     echo "END LTO"
 
+    echo "BEGIN NO_HARDEN"
+    echo "NO_HARDEN=${NO_HARDEN}"
+    echo "END NO_HARDEN"
+
     echo "END ALL"
 ) | if [ -n "$DEBUG" ] && command -v tee > /dev/null 2>&1; then
         # When debugging and `tee` is available, output the preimage to stderr

depends/packages/libevent.mk

@@ -16,8 +16,11 @@ define $(package)_set_vars
   $(package)_config_opts_netbsd=--with-pic
   $(package)_config_opts_openbsd=--with-pic
   $(package)_config_opts_android=--with-pic
-  $(package)_cppflags+=-D_FORTIFY_SOURCE=3
   $(package)_cppflags_mingw32=-D_WIN32_WINNT=0x0601
+
+  ifeq ($(NO_HARDEN),)
+  $(package)_cppflags+=-D_FORTIFY_SOURCE=3
+  endif
 endef
 
 define $(package)_preprocess_cmds