curl/lib/Makefile.mk
Viktor Szakats 445fb81237
cmake, Makefile.mk: use -isystem for dep headers, silence BearSSL issues
Patch started out for working around compiler warnings in BearSSL latest
tarball release v0.6 (2018-08-14) and Apple clang 14 with CMake.

Then turned into patching CMake and `Makefile.mk` builds to use
`-isystem` instead `-I` when adding header directories for
dependencies. This avoids compiler warnings in dependency headers,
syncing behaviour with autotools.

Also:
- `Makefile.mk`: add support for BearSSL.
- delete warning suppression for mbedTLS headers. No longer necessary
  after this patch.
  Follow-up to 434db995a7 #12720

Silenced BearSSL warnings:
```
In file included from curl/lib/vtls/bearssl.c:28:
In file included from bearssl/inc/bearssl.h:127:
bearssl/inc/bearssl_hash.h:727:5: warning: 'BR_DOXYGEN_IGNORE' is not defined, evaluates to 0 [-Wundef]
    ^
bearssl/inc/bearssl_hash.h:745:5: warning: 'BR_DOXYGEN_IGNORE' is not defined, evaluates to 0 [-Wundef]
    ^
In file included from curl/lib/vtls/bearssl.c:28:
In file included from bearssl/inc/bearssl.h:136:
bearssl/inc/bearssl_ssl.h:1253:20: warning: implicit conversion loses integer precision: 'unsigned int' to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]
        cc->version_min = version_min;
                        ~ ^~~~~~~~~~~
bearssl/inc/bearssl_ssl.h:1254:20: warning: implicit conversion loses integer precision: 'unsigned int' to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]
        cc->version_max = version_max;
                        ~ ^~~~~~~~~~~
bearssl/inc/bearssl_ssl.h:1327:28: warning: implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]
        ctx->protocol_names_num = num;
                                ~ ^~~
5 warnings generated.
```

(These warnings were fixed in BearSSL Git master in 2019 via
2893441f2efd4603ddd6d7f49011bdda096a4a87 and
ecdf89770ee82dfea6186fb4369cff3d06cd852e.)

Also these two cases, which are caused by an unidentified component
(outside curl) cranking up MSVC warnings in external headers to `/W4`
when ZLIB is deselected:
https://github.com/curl/curl/pull/14859#issuecomment-2351809153

mbedTLS 3.6.1:
```
C:\vcpkg\installed\x64-windows\include\psa\crypto_struct.h(254,13): error C2220: the following warning is treated as an error [D:\a\curl\curl\bld\lib\libcurl_object.vcxproj]
  (compiling source file 'CMakeFiles/libcurl_object.dir/Unity/unity_0_c.c')
C:\vcpkg\installed\x64-windows\include\psa\crypto_struct.h(254,13): warning C4200: nonstandard extension used: zero-sized array in struct/union [D:\a\curl\curl\bld\lib\libcurl_object.vcxproj]
  (compiling source file 'CMakeFiles/libcurl_object.dir/Unity/unity_0_c.c')
```
Ref: https://github.com/curl/curl/actions/runs/10842694205/job/30107466989?pr=14859#step:10:29

nghttp3 1.5.0:
```
C:\vcpkg\installed\x64-windows\include\nghttp3\nghttp3.h(2678,1): error C2220: the following warning is treated as an error [D:\a\curl\curl\bld\lib\libcurl_object.vcxproj]
  (compiling source file 'CMakeFiles/libcurl_object.dir/Unity/unity_0_c.c')
  C:\vcpkg\installed\x64-windows\include\nghttp3\nghttp3.h(2678,1): warning C4324: 'nghttp3_pri': structure was padded due to alignment specifier [D:\a\curl\curl\bld\lib\libcurl_object.vcxproj]
  (compiling source file 'CMakeFiles/libcurl_object.dir/Unity/unity_0_c.c')
```
Ref: https://github.com/curl/curl/actions/runs/10871875297/job/30166233862?pr=14859#step:10:28

Closes #14763
2024-09-19 19:24:01 +02:00

341 lines
8.7 KiB
Makefile

#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) 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 to build curl parts with GCC-like toolchains and optional features.
#
# Usage: make -f Makefile.mk CFG=-feat1[-feat2][-feat3][...]
# Example: make -f Makefile.mk CFG=-zlib-ssl-libssh2-ipv6
#
# Look for ' ?=' to find accepted customization variables.
# This script is reused by 'src' and 'docs/examples' Makefile.mk scripts.
ifndef PROOT
PROOT := ..
LOCAL := 1
endif
### Common
CFLAGS ?=
CPPFLAGS ?=
LDFLAGS ?=
LIBS ?=
CROSSPREFIX ?=
ifeq ($(CC),cc)
CC := gcc
endif
CC := $(CROSSPREFIX)$(CC)
AR := $(CROSSPREFIX)$(AR)
TRIPLET ?= $(shell $(CC) -dumpmachine)
BIN_EXT :=
ifneq ($(findstring msdos,$(TRIPLET)),)
# Cross-tools: https://github.com/andrewwutw/build-djgpp
MSDOS := 1
BIN_EXT := .exe
else ifneq ($(findstring amigaos,$(TRIPLET)),)
# Cross-tools: https://github.com/bebbo/amiga-gcc
AMIGA := 1
endif
CPPFLAGS += -I. -I$(PROOT)/include
### Deprecated settings. For compatibility.
ifdef WATT_ROOT
WATT_PATH := $(realpath $(WATT_ROOT))
endif
### Optional features
ifneq ($(findstring -debug,$(CFG)),)
CFLAGS += -g
CPPFLAGS += -DDEBUGBUILD
else
CPPFLAGS += -DNDEBUG
endif
ifneq ($(findstring -trackmem,$(CFG)),)
CPPFLAGS += -DCURLDEBUG
endif
ifneq ($(findstring -map,$(CFG)),)
MAP := 1
endif
# CPPFLAGS below are only necessary when building libcurl via 'lib' (see
# comments below about exceptions). Always include them anyway to match
# behavior of other build systems.
ifneq ($(findstring -sync,$(CFG)),)
CPPFLAGS += -DUSE_SYNC_DNS
else ifneq ($(findstring -ares,$(CFG)),)
LIBCARES_PATH ?= $(PROOT)/../c-ares
CPPFLAGS += -DUSE_ARES
CPPFLAGS += -isystem "$(LIBCARES_PATH)/include"
LDFLAGS += -L"$(LIBCARES_PATH)/lib"
LIBS += -lcares
endif
ifneq ($(findstring -rtmp,$(CFG)),)
LIBRTMP_PATH ?= $(PROOT)/../librtmp
CPPFLAGS += -DUSE_LIBRTMP
CPPFLAGS += -isystem "$(LIBRTMP_PATH)"
LDFLAGS += -L"$(LIBRTMP_PATH)/librtmp"
LIBS += -lrtmp
ZLIB := 1
endif
ifneq ($(findstring -ssh2,$(CFG)),)
LIBSSH2_PATH ?= $(PROOT)/../libssh2
CPPFLAGS += -DUSE_LIBSSH2
CPPFLAGS += -isystem "$(LIBSSH2_PATH)/include"
LDFLAGS += -L"$(LIBSSH2_PATH)/lib"
LIBS += -lssh2
else ifneq ($(findstring -libssh,$(CFG)),)
LIBSSH_PATH ?= $(PROOT)/../libssh
CPPFLAGS += -DUSE_LIBSSH
CPPFLAGS += -isystem "$(LIBSSH_PATH)/include"
LDFLAGS += -L"$(LIBSSH_PATH)/lib"
LIBS += -lssh
else ifneq ($(findstring -wolfssh,$(CFG)),)
WOLFSSH_PATH ?= $(PROOT)/../wolfssh
CPPFLAGS += -DUSE_WOLFSSH
CPPFLAGS += -isystem "$(WOLFSSH_PATH)/include"
LDFLAGS += -L"$(WOLFSSH_PATH)/lib"
LIBS += -lwolfssh
endif
ifneq ($(findstring -ssl,$(CFG)),)
OPENSSL_PATH ?= $(PROOT)/../openssl
CPPFLAGS += -DUSE_OPENSSL
CPPFLAGS += -DCURL_DISABLE_OPENSSL_AUTO_LOAD_CONFIG
OPENSSL_INCLUDE ?= $(OPENSSL_PATH)/include
OPENSSL_LIBPATH ?= $(OPENSSL_PATH)/lib
CPPFLAGS += -isystem "$(OPENSSL_INCLUDE)"
LDFLAGS += -L"$(OPENSSL_LIBPATH)"
OPENSSL_LIBS ?= -lssl -lcrypto
LIBS += $(OPENSSL_LIBS)
ifneq ($(findstring -srp,$(CFG)),)
ifneq ($(wildcard $(OPENSSL_INCLUDE)/openssl/srp.h),)
# OpenSSL 1.0.1 and later.
CPPFLAGS += -DHAVE_OPENSSL_SRP -DUSE_TLS_SRP
endif
endif
SSLLIBS += 1
endif
ifneq ($(findstring -wolfssl,$(CFG)),)
WOLFSSL_PATH ?= $(PROOT)/../wolfssl
CPPFLAGS += -DUSE_WOLFSSL
CPPFLAGS += -DSIZEOF_LONG_LONG=8
CPPFLAGS += -isystem "$(WOLFSSL_PATH)/include"
LDFLAGS += -L"$(WOLFSSL_PATH)/lib"
LIBS += -lwolfssl
SSLLIBS += 1
endif
ifneq ($(findstring -mbedtls,$(CFG)),)
MBEDTLS_PATH ?= $(PROOT)/../mbedtls
CPPFLAGS += -DUSE_MBEDTLS
CPPFLAGS += -isystem "$(MBEDTLS_PATH)/include"
LDFLAGS += -L"$(MBEDTLS_PATH)/lib"
LIBS += -lmbedtls -lmbedx509 -lmbedcrypto
SSLLIBS += 1
endif
ifneq ($(findstring -bearssl,$(CFG)),)
BEARSSL_PATH ?= $(PROOT)/../bearssl
CPPFLAGS += -DUSE_BEARSSL
CPPFLAGS += -isystem "$(BEARSSL_PATH)/inc"
LDFLAGS += -L"$(BEARSSL_PATH)/build"
LIBS += -lbearssl
SSLLIBS += 1
endif
ifneq ($(findstring -nghttp2,$(CFG)),)
NGHTTP2_PATH ?= $(PROOT)/../nghttp2
CPPFLAGS += -DUSE_NGHTTP2
CPPFLAGS += -isystem "$(NGHTTP2_PATH)/include"
LDFLAGS += -L"$(NGHTTP2_PATH)/lib"
LIBS += -lnghttp2
endif
ifeq ($(findstring -nghttp3,$(CFG))$(findstring -ngtcp2,$(CFG)),-nghttp3-ngtcp2)
NGHTTP3_PATH ?= $(PROOT)/../nghttp3
CPPFLAGS += -DUSE_NGHTTP3
CPPFLAGS += -isystem "$(NGHTTP3_PATH)/include"
LDFLAGS += -L"$(NGHTTP3_PATH)/lib"
LIBS += -lnghttp3
NGTCP2_PATH ?= $(PROOT)/../ngtcp2
CPPFLAGS += -DUSE_NGTCP2
CPPFLAGS += -isystem "$(NGTCP2_PATH)/include"
LDFLAGS += -L"$(NGTCP2_PATH)/lib"
NGTCP2_LIBS ?=
ifeq ($(NGTCP2_LIBS),)
ifneq ($(findstring -ssl,$(CFG)),)
ifneq ($(wildcard $(OPENSSL_INCLUDE)/openssl/aead.h),)
NGTCP2_LIBS := -lngtcp2_crypto_boringssl
else # including libressl
NGTCP2_LIBS := -lngtcp2_crypto_quictls
endif
else ifneq ($(findstring -wolfssl,$(CFG)),)
NGTCP2_LIBS := -lngtcp2_crypto_wolfssl
endif
endif
LIBS += -lngtcp2 $(NGTCP2_LIBS)
endif
ifneq ($(findstring -zlib,$(CFG))$(ZLIB),)
ZLIB_PATH ?= $(PROOT)/../zlib
# These CPPFLAGS are also required when compiling the curl tool via 'src'.
CPPFLAGS += -DHAVE_LIBZ
CPPFLAGS += -isystem "$(ZLIB_PATH)/include"
LDFLAGS += -L"$(ZLIB_PATH)/lib"
ZLIB_LIBS ?= -lz
LIBS += $(ZLIB_LIBS)
ZLIB := 1
endif
ifneq ($(findstring -zstd,$(CFG)),)
ZSTD_PATH ?= $(PROOT)/../zstd
CPPFLAGS += -DHAVE_ZSTD
CPPFLAGS += -isystem "$(ZSTD_PATH)/include"
LDFLAGS += -L"$(ZSTD_PATH)/lib"
ZSTD_LIBS ?= -lzstd
LIBS += $(ZSTD_LIBS)
endif
ifneq ($(findstring -brotli,$(CFG)),)
BROTLI_PATH ?= $(PROOT)/../brotli
CPPFLAGS += -DHAVE_BROTLI
CPPFLAGS += -isystem "$(BROTLI_PATH)/include"
LDFLAGS += -L"$(BROTLI_PATH)/lib"
BROTLI_LIBS ?= -lbrotlidec -lbrotlicommon
LIBS += $(BROTLI_LIBS)
endif
ifneq ($(findstring -gsasl,$(CFG)),)
LIBGSASL_PATH ?= $(PROOT)/../gsasl
CPPFLAGS += -DUSE_GSASL
CPPFLAGS += -isystem "$(LIBGSASL_PATH)/include"
LDFLAGS += -L"$(LIBGSASL_PATH)/lib"
LIBS += -lgsasl
endif
ifneq ($(findstring -idn2,$(CFG)),)
LIBIDN2_PATH ?= $(PROOT)/../libidn2
CPPFLAGS += -DHAVE_LIBIDN2 -DHAVE_IDN2_H
CPPFLAGS += -isystem "$(LIBIDN2_PATH)/include"
LDFLAGS += -L"$(LIBIDN2_PATH)/lib"
LIBS += -lidn2
ifneq ($(findstring -psl,$(CFG)),)
LIBPSL_PATH ?= $(PROOT)/../libpsl
CPPFLAGS += -DUSE_LIBPSL
CPPFLAGS += -isystem "$(LIBPSL_PATH)/include"
LDFLAGS += -L"$(LIBPSL_PATH)/lib"
LIBS += -lpsl
endif
endif
ifneq ($(findstring -ipv6,$(CFG)),)
CPPFLAGS += -DUSE_IPV6
endif
ifneq ($(findstring -watt,$(CFG))$(MSDOS),)
WATT_PATH ?= $(PROOT)/../watt
CPPFLAGS += -isystem "$(WATT_PATH)/inc"
LDFLAGS += -L"$(WATT_PATH)/lib"
LIBS += -lwatt
endif
ifneq ($(findstring 11,$(subst $(subst ,, ),,$(SSLLIBS))),)
CPPFLAGS += -DCURL_WITH_MULTI_SSL
endif
### Common rules
OBJ_DIR := $(TRIPLET)
ifneq ($(findstring /sh,$(SHELL)),)
DEL = rm -f $1
COPY = -cp -afv $1 $2
MKDIR = mkdir -p $1
RMDIR = rm -fr $1
else
DEL = -del 2>NUL /q /f $(subst /,\,$1)
COPY = -copy 2>NUL /y $(subst /,\,$1) $(subst /,\,$2)
MKDIR = -md 2>NUL $(subst /,\,$1)
RMDIR = -rd 2>NUL /q /s $(subst /,\,$1)
endif
all: $(TARGETS)
$(OBJ_DIR):
-$(call MKDIR, $(OBJ_DIR))
$(OBJ_DIR)/%.o: %.c
$(CC) -W -Wall $(CFLAGS) $(CPPFLAGS) -c $< -o $@
clean:
@$(call DEL, $(TOCLEAN))
@$(RMDIR) $(OBJ_DIR)
distclean vclean: clean
@$(call DEL, $(TARGETS) $(TOVCLEAN))
### Local
ifdef LOCAL
CPPFLAGS += -DBUILDING_LIBCURL
### Sources and targets
# Provides CSOURCES, HHEADERS
include Makefile.inc
vpath %.c vauth vquic vssh vtls
libcurl_a_LIBRARY := libcurl.a
TARGETS := $(libcurl_a_LIBRARY)
libcurl_a_OBJECTS := $(patsubst %.c,$(OBJ_DIR)/%.o,$(notdir $(strip $(CSOURCES))))
libcurl_a_DEPENDENCIES := $(strip $(CSOURCES) $(HHEADERS))
TOCLEAN :=
TOVCLEAN :=
### Rules
$(libcurl_a_LIBRARY): $(libcurl_a_OBJECTS) $(libcurl_a_DEPENDENCIES)
@$(call DEL, $@)
$(AR) rcs $@ $(libcurl_a_OBJECTS)
all: $(OBJ_DIR) $(TARGETS)
endif