bitcoin/depends/packages/libevent.mk
fanquake 5567754087
depends: build libevent with -D_GNU_SOURCE
Currently, builds of libevent in depends, using CMake, fail on some
systems, like Alpine, with the following:
```bash
/bitcoin/depends/work/build/aarch64-unknown-linux-musl/libevent/2.1.12-stable-1516ed47ea8/evmap.c: In function 'evmap_signal_add_':
/bitcoin/depends/work/build/aarch64-unknown-linux-musl/libevent/2.1.12-stable-1516ed47ea8/evmap.c:456:31: error: 'NSIG' undeclared (first use in this function)
  456 |         if (sig < 0 || sig >= NSIG)
```

From what I can tell the `_GNU_SOURCE` "detection" in libevents CMake build
system, never? really worked, and it's not clear what a nice fix is.

For now, always use `_GNU_SOURCE` when building libevent in depends.
2024-09-03 10:16:52 +01:00

46 lines
1.5 KiB
Makefile

package=libevent
$(package)_version=2.1.12-stable
$(package)_download_path=https://github.com/libevent/libevent/releases/download/release-$($(package)_version)/
$(package)_file_name=$(package)-$($(package)_version).tar.gz
$(package)_sha256_hash=92e6de1be9ec176428fd2367677e61ceffc2ee1cb119035037a27d346b0403bb
$(package)_patches=cmake_fixups.patch
$(package)_patches+=fix_mingw_link.patch
$(package)_build_subdir=build
# When building for Windows, we set _WIN32_WINNT to target the same Windows
# version as we do in configure. Due to quirks in libevents build system, this
# is also required to enable support for ipv6. See #19375.
define $(package)_set_vars
$(package)_config_opts=-DEVENT__DISABLE_BENCHMARK=ON -DEVENT__DISABLE_OPENSSL=ON
$(package)_config_opts+=-DEVENT__DISABLE_SAMPLES=ON -DEVENT__DISABLE_REGRESS=ON
$(package)_config_opts+=-DEVENT__DISABLE_TESTS=ON -DEVENT__LIBRARY_TYPE=STATIC
$(package)_cppflags += -D_GNU_SOURCE
$(package)_cppflags_mingw32=-D_WIN32_WINNT=0x0601
ifeq ($(NO_HARDEN),)
$(package)_cppflags+=-D_FORTIFY_SOURCE=3
endif
endef
define $(package)_preprocess_cmds
patch -p1 < $($(package)_patch_dir)/cmake_fixups.patch && \
patch -p1 < $($(package)_patch_dir)/fix_mingw_link.patch
endef
define $(package)_config_cmds
$($(package)_cmake) -S .. -B .
endef
define $(package)_build_cmds
$(MAKE)
endef
define $(package)_stage_cmds
$(MAKE) DESTDIR=$($(package)_staging_dir) install
endef
define $(package)_postprocess_cmds
rm -rf bin && \
rm include/ev*.h && \
rm include/event2/*_compat.h
endef