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curl/lib/Makefile.m32
Viktor Szakats 10fbd8b4e3
Makefile.m32: major rework [ci skip] 
This patch overhauls `Makefile.m32` scripts, fixing a list of quirks,
making its behaviour and customization envvars align better with other
build systems, aiming for less code, that is easier to read, use and
maintain.

Details:
- Rename customization envvars:
  `CURL_CC` -> `CC`
  `CURL_RC` -> `RC`
  `CURL_AR` -> `AR`
  `CURL_LDFLAG_EXTRAS_DLL` -> `CURL_LDFLAGS_LIB`
  `CURL_LDFLAG_EXTRAS_EXE` -> `CURL_LDFLAGS_BIN`
- Drop `CURL_STRIP` and `CURL_RANLIB`. These tools are no longer used.
- Accept `CFLAGS`, `CPPFLAGS`, `RCFLAGS`, `LDFLAGS` and `LIBS` envvars.
- Drop `CURL_CFLAG_EXTRAS`, `CURL_LDFLAG_EXTRAS`, `CURL_RCFLAG_EXTRAS` in
  favor of the above.
- Do not automatically enable `zlib` with `libssh2`. `zlib` is optional
  with `libssh2`.
- Omit unnecessary `CPPFLAGS` options when building `curl.exe` and
  examples.
- Drop support for deprecated `-winssl` `CFG` option. Use `-schannel`
  instead.
- Avoid late evaluation where not necessary (`=` -> `:=`).
- Drop support for `CURL_DLL_A_SUFFIX` to override the implib suffix.
  Instead, use the standard naming scheme by default: `libcurl.dll.a`.
  The toolchain recognizes the name, and selects it automatically when
  asking for a `-shared` vs. `-static` build.
- Stop applying `strip` to `libcurl.a`. Follow-up from
  16a58e9f93. There was no debug info to
  strip since then.
- Stop setting `-O3`, `-W`, `-Wall` options. You can add these to
  `CFLAGS` as desired.
- Always enable `-DCURL_DISABLE_OPENSSL_AUTO_LOAD_CONFIG` with OpenSSL,
  to avoid that vulnerability on Windows.
- Add `-lbrotlicommon` to `LIBS` when using `brotli`.
- Do not enable `-nghttp3` without `-ngtcp2`.
- `-ssh2` and `-rtmp` options no longer try to auto-select a TLS-backend.
  You need to set the backend explicitly. This scales better and avoids
  issues with certain combinations (e.g. `libssh2` + `wolfssl` with no
  `schannel`).
- Default to OpenSSL TLS-backend with `ngtcp2`. Possible to override via
  `NGTCP2_LIBS`.
- Old, alternate method of enabling components (e.g. `SSH2=1`) no longer
  supported.
- Delete `SPNEGO` references. They were no-ops.
- Drop support for Win9x environments.
- Allow setting `OPENSSL_LIBS` independently from `OPENSSL_LIBPATH`.
- Support autotools/CMake `libssh2` builds by default.
- Respect `CURL_DLL_SUFFIX` in `-dyn` mode when building `curl.exe` and
  examples.
- Assume standard directory layout with `LIBCARES_PATH`. (Instead of the
  long gone embedded one.)
- Stop static linking with c-ares by default. Add
  `CPPFLAGS=-DCARES_STATICLIB` to enable it.
- Reorganize internal layout to avoid redundancy and emit clean diffs
  between src/lib and example make files.
- Delete unused variables.
- Code cleanups/rework.
- Comment and indentation fixes.

Closes #9632
2022-10-03 19:46:56 +00:00

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#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) 1999 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
#***************************************************************************
# Makefile for building libcurl with MinGW and optional features.
#
# Usage: mingw32-make -f Makefile.m32 CFG=-feature1[-feature2][-feature3][...]
# Example: mingw32-make -f Makefile.m32 CFG=-zlib-ssl-sspi-winidn
#
# Set component roots via envvar <feature>_PATH. CPPFLAGS, LDFLAGS, LIBS,
# CFLAGS, RCFLAGS (and more) are also available for customization.
PROOT := ..
CPPFLAGS += -I. -I$(PROOT)/include -DBUILDING_LIBCURL
RCFLAGS += -I$(PROOT)/include
ifneq ($(ARCH),custom)
# Set environment var ARCH to your architecture to override autodetection.
ifndef ARCH
ifneq ($(findstring x86_64,$(shell $(CC) -dumpmachine)),)
ARCH := w64
else
ARCH := w32
endif
endif
ifeq ($(ARCH),w64)
CFLAGS += -m64
LDFLAGS += -m64
RCFLAGS += --target=pe-x86-64
else
CFLAGS += -m32
LDFLAGS += -m32
RCFLAGS += --target=pe-i386
endif
endif
### Optional features
ifneq ($(findstring -unicode,$(CFG)),)
CPPFLAGS += -DUNICODE -D_UNICODE
endif
ifneq ($(findstring -sync,$(CFG)),)
CPPFLAGS += -DUSE_SYNC_DNS
else
ifneq ($(findstring -ares,$(CFG)),)
LIBCARES_PATH ?= $(PROOT)/../c-ares
CPPFLAGS += -DUSE_ARES
CPPFLAGS += -I"$(LIBCARES_PATH)/include"
LDFLAGS += -L"$(LIBCARES_PATH)/lib"
LIBS += -lcares
endif
endif
ifneq ($(findstring -rtmp,$(CFG)),)
LIBRTMP_PATH ?= $(PROOT)/../librtmp
CPPFLAGS += -DUSE_LIBRTMP
CPPFLAGS += -I"$(LIBRTMP_PATH)"
LDFLAGS += -L"$(LIBRTMP_PATH)/librtmp"
LIBS += -lrtmp -lwinmm
ZLIB := 1
endif
ifneq ($(findstring -ssh2,$(CFG)),)
LIBSSH2_PATH ?= $(PROOT)/../libssh2
CPPFLAGS += -DUSE_LIBSSH2 -DHAVE_LIBSSH2_H
CPPFLAGS += -I"$(LIBSSH2_PATH)/include"
LDFLAGS += -L"$(LIBSSH2_PATH)/lib"
LDFLAGS += -L"$(LIBSSH2_PATH)/win32"
LIBS += -lssh2
endif
ifneq ($(findstring -nghttp2,$(CFG)),)
NGHTTP2_PATH ?= $(PROOT)/../nghttp2
CPPFLAGS += -DUSE_NGHTTP2
CPPFLAGS += -I"$(NGHTTP2_PATH)/include"
LDFLAGS += -L"$(NGHTTP2_PATH)/lib"
LIBS += -lnghttp2
endif
ifneq ($(findstring -nghttp3,$(CFG)),)
ifneq ($(findstring -ngtcp2,$(CFG)),)
NGHTTP3_PATH ?= $(PROOT)/../nghttp3
CPPFLAGS += -DUSE_NGHTTP3
CPPFLAGS += -I"$(NGHTTP3_PATH)/include"
LDFLAGS += -L"$(NGHTTP3_PATH)/lib"
LIBS += -lnghttp3
NGTCP2_PATH ?= $(PROOT)/../ngtcp2
CPPFLAGS += -DUSE_NGTCP2
CPPFLAGS += -I"$(NGTCP2_PATH)/include"
LDFLAGS += -L"$(NGTCP2_PATH)/lib"
NGTCP2_LIBS ?= -lngtcp2 -lngtcp2_crypto_openssl
LIBS += $(NGTCP2_LIBS)
endif
endif
ifneq ($(findstring -ssl,$(CFG)),)
OPENSSL_PATH ?= $(PROOT)/../openssl
CPPFLAGS += -DUSE_OPENSSL
CPPFLAGS += -DCURL_DISABLE_OPENSSL_AUTO_LOAD_CONFIG
OPENSSL_INCLUDE ?= $(OPENSSL_PATH)/include
CPPFLAGS += -I"$(OPENSSL_INCLUDE)"
OPENSSL_LIBPATH ?= $(OPENSSL_PATH)/lib
LDFLAGS += -L"$(OPENSSL_LIBPATH)"
OPENSSL_LIBS ?= -lssl -lcrypto
LIBS += $(OPENSSL_LIBS)
ifneq ($(findstring -srp,$(CFG)),)
ifeq "$(wildcard $(OPENSSL_INCLUDE)/openssl/srp.h)" "$(OPENSSL_INCLUDE)/openssl/srp.h"
# OpenSSL 1.0.1 and later, except BoringSSL
CPPFLAGS += -DHAVE_OPENSSL_SRP -DUSE_TLS_SRP
endif
endif
SSL := 1
endif
ifneq ($(findstring -schannel,$(CFG)),)
CPPFLAGS += -DUSE_SCHANNEL
ifdef SSL
CPPFLAGS += -DCURL_WITH_MULTI_SSL
endif
endif
ifneq ($(findstring -zlib,$(CFG))$(ZLIB),)
ZLIB_PATH ?= $(PROOT)/../zlib
CPPFLAGS += -DHAVE_LIBZ -DHAVE_ZLIB_H
CPPFLAGS += -I"$(ZLIB_PATH)"
LDFLAGS += -L"$(ZLIB_PATH)"
LIBS += -lz
endif
ifneq ($(findstring -zstd,$(CFG)),)
ZSTD_PATH ?= $(PROOT)/../zstd
CPPFLAGS += -DHAVE_ZSTD
CPPFLAGS += -I"$(ZSTD_PATH)/include"
LDFLAGS += -L"$(ZSTD_PATH)/lib"
ZSTD_LIBS ?= -lzstd
LIBS += $(ZSTD_LIBS)
endif
ifneq ($(findstring -brotli,$(CFG)),)
BROTLI_PATH ?= $(PROOT)/../brotli
CPPFLAGS += -DHAVE_BROTLI
CPPFLAGS += -I"$(BROTLI_PATH)/include"
LDFLAGS += -L"$(BROTLI_PATH)/lib"
BROTLI_LIBS ?= -lbrotlidec -lbrotlicommon
LIBS += $(BROTLI_LIBS)
endif
ifneq ($(findstring -gsasl,$(CFG)),)
LIBGSASL_PATH ?= $(PROOT)/../gsasl
CPPFLAGS += -DUSE_GSASL
CPPFLAGS += -I"$(LIBGSASL_PATH)/include"
LDFLAGS += -L"$(LIBGSASL_PATH)/lib"
LIBS += -lgsasl
endif
ifneq ($(findstring -idn2,$(CFG)),)
LIBIDN2_PATH ?= $(PROOT)/../libidn2
CPPFLAGS += -DUSE_LIBIDN2
CPPFLAGS += -I"$(LIBIDN2_PATH)/include"
LDFLAGS += -L"$(LIBIDN2_PATH)/lib"
LIBS += -lidn2
else
ifneq ($(findstring -winidn,$(CFG)),)
CPPFLAGS += -DUSE_WIN32_IDN
CPPFLAGS += -DWANT_IDN_PROTOTYPES
LIBS += -lnormaliz
endif
endif
ifneq ($(findstring -sspi,$(CFG)),)
CPPFLAGS += -DUSE_WINDOWS_SSPI
endif
ifneq ($(findstring -ipv6,$(CFG)),)
CPPFLAGS += -DENABLE_IPV6
endif
ifneq ($(findstring -ldaps,$(CFG)),)
CPPFLAGS += -DHAVE_LDAP_SSL
endif
ifeq ($(findstring -lldap,$(LIBS)),)
LIBS += -lwldap32
endif
LIBS += -lws2_32 -lcrypt32 -lbcrypt
### Sources and targets
# Provides CSOURCES and HHEADERS
include Makefile.inc
libcurl_dll_LIBRARY := libcurl$(CURL_DLL_SUFFIX).dll
libcurl_dll_a_LIBRARY := libcurl.dll.a
libcurl_a_LIBRARY := libcurl.a
libcurl_a_OBJECTS := $(patsubst %.c,%.o,$(strip $(CSOURCES)))
libcurl_a_DEPENDENCIES := $(strip $(CSOURCES) $(HHEADERS))
RESOURCE := libcurl.res
### Rules
CC ?= $(CROSSPREFIX)gcc
RC ?= $(CROSSPREFIX)windres
AR ?= $(CROSSPREFIX)ar
ifneq ($(findstring /sh,$(SHELL)),)
DEL = rm -f $1
else
DEL = -del 2>NUL /q /f $(subst /,\,$1)
endif
all: $(libcurl_a_LIBRARY) $(libcurl_dll_LIBRARY)
$(libcurl_a_LIBRARY): $(libcurl_a_OBJECTS) $(libcurl_a_DEPENDENCIES)
@$(call DEL, $@)
$(AR) rcs $@ $(libcurl_a_OBJECTS)
$(libcurl_dll_LIBRARY): $(libcurl_a_OBJECTS) $(RESOURCE)
$(CC) $(LDFLAGS) -shared $(CURL_LDFLAGS_LIB) -o $@ $(libcurl_a_OBJECTS) $(RESOURCE) $(LIBS) \
-Wl,--output-def,$(@:.dll=.def),--out-implib,$(libcurl_dll_a_LIBRARY)
%.o: %.c
$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
%.res: %.rc
$(RC) -O coff $(RCFLAGS) -i $< -o $@
clean:
@$(call DEL, $(libcurl_a_OBJECTS) $(RESOURCE))
distclean vclean: clean
@$(call DEL, $(libcurl_a_LIBRARY) $(libcurl_dll_LIBRARY) $(libcurl_dll_LIBRARY:.dll=.def) $(libcurl_dll_a_LIBRARY))
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