Merge bitcoin/bitcoin#23948: build: add support for FreeBSD to depends

ae9175f6086aa6c177084365c795e78c580eac1d build: add FreeBSD support to depends (fanquake)

Pull request description:

  Setup to use the system Clang (11.0.1 as of FreeBSD 13.0).

  Doesn't build the Qt package; that requires a few additional changes. The current issue is that FreeBSDs `byacc` seems to have an issue parsing something in libxkbcommon. Work in progress branch here: https://github.com/fanquake/bitcoin/tree/depends_support_freebsd_qt. In any case, I don't think building the Qt libs on FreeBSD is a super high priority (I'd also have no way to test the GUI).

ACKs for top commit:
  laanwj:
    ACK ae9175f6086aa6c177084365c795e78c580eac1d

Tree-SHA512: 1ecc7855f0195f68c96e534bd77ce17c3975db1dfb3caa35302c2b46643c8c30f75b1c2e1735cf69f1eddb70447d11e67e7f339ef5497336cdff7a59b32be961

8 files changed, 43 insertions, 0 deletions

diff --git a/depends/Makefile b/depends/Makefile
index 73e2af5501..003778b375 100644
--- a/depends/Makefile
+++ b/depends/Makefile
@@ -76,6 +76,7 @@ build_vendor=$(word 2,$(subst -, ,$(build)))
 full_build_os:=$(subst $(build_arch)-$(build_vendor)-,,$(build))
 build_os:=$(findstring linux,$(full_build_os))
 build_os+=$(findstring darwin,$(full_build_os))
+build_os+=$(findstring freebsd,$(full_build_os))
 build_os:=$(strip $(build_os))
 ifeq ($(build_os),)
 build_os=$(full_build_os)
@@ -86,6 +87,7 @@ host_vendor=$(word 2,$(subst -, ,$(canonical_host)))
 full_host_os:=$(subst $(host_arch)-$(host_vendor)-,,$(canonical_host))
 host_os:=$(findstring linux,$(full_host_os))
 host_os+=$(findstring darwin,$(full_host_os))
+host_os+=$(findstring freebsd,$(full_host_os))
 host_os+=$(findstring mingw32,$(full_host_os))
 
 ifeq (android,$(findstring android,$(full_host_os)))
diff --git a/depends/builders/freebsd.mk b/depends/builders/freebsd.mk
new file mode 100644
index 0000000000..465f58e04d
--- /dev/null
+++ b/depends/builders/freebsd.mk
@@ -0,0 +1,5 @@
+build_freebsd_CC=clang
+build_freebsd_CXX=clang++
+
+build_freebsd_SHA256SUM = shasum -a 256
+build_freebsd_DOWNLOAD = curl --location --fail --connect-timeout $(DOWNLOAD_CONNECT_TIMEOUT) --retry $(DOWNLOAD_RETRIES) -o
diff --git a/depends/hosts/freebsd.mk b/depends/hosts/freebsd.mk
new file mode 100644
index 0000000000..307f844331
--- /dev/null
+++ b/depends/hosts/freebsd.mk
@@ -0,0 +1,31 @@
+freebsd_CFLAGS=-pipe
+freebsd_CFLAGS_CXXFLAGS=$(freebsd_CFLAGS)
+
+freebsd_CFLAGS_release_CFLAGS=-O2
+freebsd_CFLAGS_release_CXXFLAGS=$(freebsd_release_CFLAGS)
+
+freebsd_CFLAGS_debug_CFLAGS=-O1
+freebsd_CFLAGS_debug_CXXFLAGS=$(freebsd_debug_CFLAGS)
+
+ifeq (86,$(findstring 86,$(build_arch)))
+i686_freebsd_CC=clang -m32
+i686_freebsd_CXX=clang++ -m32
+i686_freebsd_AR=ar
+i686_freebsd_RANLIB=ranlib
+i686_freebsd_NM=nm
+i686_freebsd_STRIP=strip
+
+x86_64_freebsd_CC=clang -m64
+x86_64_freebsd_CXX=clang++ -m64
+x86_64_freebsd_AR=ar
+x86_64_freebsd_RANLIB=ranlib
+x86_64_freebsd_NM=nm
+x86_64_freebsd_STRIP=strip
+else
+i686_freebsd_CC=$(default_host_CC) -m32
+i686_freebsd_CXX=$(default_host_CXX) -m32
+x86_64_freebsd_CC=$(default_host_CC) -m64
+x86_64_freebsd_CXX=$(default_host_CXX) -m64
+endif
+
+freebsd_cmake_system=FreeBSD
diff --git a/depends/packages/bdb.mk b/depends/packages/bdb.mk
index 8a3116bb3b..4e74c95a8e 100644
--- a/depends/packages/bdb.mk
+++ b/depends/packages/bdb.mk
@@ -10,6 +10,7 @@ define $(package)_set_vars
 $(package)_config_opts=--disable-shared --enable-cxx --disable-replication --enable-option-checking
 $(package)_config_opts_mingw32=--enable-mingw
 $(package)_config_opts_linux=--with-pic
+$(package)_config_opts_freebsd=--with-pic
 $(package)_config_opts_android=--with-pic
 $(package)_cflags+=-Wno-error=implicit-function-declaration
 $(package)_cxxflags+=-std=c++17
diff --git a/depends/packages/boost.mk b/depends/packages/boost.mk
index fe2425ffaf..9d3ba321f9 100644
--- a/depends/packages/boost.mk
+++ b/depends/packages/boost.mk
@@ -25,6 +25,7 @@ endif
 $(package)_config_libraries=filesystem,system,test
 $(package)_cxxflags+=-std=c++17
 $(package)_cxxflags_linux=-fPIC
+$(package)_cxxflags_freebsd=-fPIC
 $(package)_cxxflags_android=-fPIC
 $(package)_cxxflags_x86_64=-fcf-protection=full
 endef
diff --git a/depends/packages/libevent.mk b/depends/packages/libevent.mk
index 0af5412d94..2305f96d27 100644
--- a/depends/packages/libevent.mk
+++ b/depends/packages/libevent.mk
@@ -12,6 +12,7 @@ define $(package)_set_vars
   $(package)_config_opts += --disable-dependency-tracking --enable-option-checking
   $(package)_config_opts_release=--disable-debug-mode
   $(package)_config_opts_linux=--with-pic
+  $(package)_config_opts_freebsd=--with-pic
   $(package)_config_opts_android=--with-pic
   $(package)_cppflags_mingw32=-D_WIN32_WINNT=0x0601
 endef
diff --git a/depends/packages/sqlite.mk b/depends/packages/sqlite.mk
index af5e0d09c9..36b6df7f6e 100644
--- a/depends/packages/sqlite.mk
+++ b/depends/packages/sqlite.mk
@@ -7,6 +7,7 @@ $(package)_sha256_hash=486748abfb16abd8af664e3a5f03b228e5f124682b0c942e157644bf6
 define $(package)_set_vars
 $(package)_config_opts=--disable-shared --disable-readline --disable-dynamic-extensions --enable-option-checking
 $(package)_config_opts_linux=--with-pic
+$(package)_config_opts_freebsd=--with-pic
 endef
 
 define $(package)_preprocess_cmds
diff --git a/depends/packages/zeromq.mk b/depends/packages/zeromq.mk
index f5478a88c4..c56ec5c2bd 100644
--- a/depends/packages/zeromq.mk
+++ b/depends/packages/zeromq.mk
@@ -12,6 +12,7 @@ define $(package)_set_vars
   $(package)_config_opts += --disable-libunwind --disable-radix-tree --without-gcov --disable-dependency-tracking
   $(package)_config_opts += --disable-Werror --disable-drafts --enable-option-checking
   $(package)_config_opts_linux=--with-pic
+  $(package)_config_opts_freebsd=--with-pic
   $(package)_config_opts_android=--with-pic
   $(package)_cxxflags+=-std=c++17
 endef