[bug] Problem when build with Bitcode enabled

Environment Details (include every applicable attribute)

• Operating System+version: macos mont
• Compiler+version: clang 13
• Conan version: 1.48
• Python version: 3.7

Steps to reproduce (Include if Applicable)

1. Build: conan install openssl/1.1.1k@ -c:h tools.apple:enable_bitcode=True -pr:h conan/profiles/nativium_ios_profile --build

2. Check: otool -l apps/app_rand.o | grep bitcode

When check, it need show:

  sectname __bitcode

The generated compiler command don’t include -fembed-bitcode:

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang  -I. -Iinclude -fPIC -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.4.sdk -fno-common -O3 -fPIC -mios-version-min=9.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.4.sdk -arch armv7 -O3 -fPIC -DOPENSSL_PIC -DOPENSSLDIR="\"/Users/paulo/.conan/data/openssl/1.1.1k/_/_/package/4ac31d5d0c1627657f3e62f1b22936dec2100590/res\"" -DENGINESDIR="\"/Users/paulo/.conan/data/openssl/1.1.1k/_/_/package/4ac31d5d0c1627657f3e62f1b22936dec2100590/lib/engines-1.1\"" -D_REENTRANT -DNDEBUG -DNDEBUG  -MMD -MF apps/app_rand.d.tmp -MT apps/app_rand.o -c -o apps/app_rand.o apps/app_rand.c

Profile:

include(default)

[settings]
os=iOS
os.version=9.0
arch=armv7

Logs (Executed commands with output) (Include/Attach if Applicable)

conan install openssl/1.1.1k@ -c:h tool.enable_bitcode=True -pr:h conan/profiles/nativium_ios_profile --build
Configuration:
[settings]
arch=armv7
arch_build=x86_64
build_type=Release
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=13
os=iOS
os.version=9.0
os_build=Macos
[options]
[build_requires]
[env]
[conf]
tool.enable_bitcode=True

openssl/1.1.1k: Forced build from source
Installing package: openssl/1.1.1k
Requirements
    openssl/1.1.1k from 'conancenter' - Cache
Packages
    openssl/1.1.1k:4ac31d5d0c1627657f3e62f1b22936dec2100590 - Build

Cross-build from 'Macos:x86_64' to 'iOS:armv7'
Installing (downloading, building) binaries...
openssl/1.1.1k: WARN: Build folder is dirty, removing it: /Users/paulo/.conan/data/openssl/1.1.1k/_/_/build/4ac31d5d0c1627657f3e62f1b22936dec2100590
openssl/1.1.1k: Copying sources to build folder
openssl/1.1.1k: Building your package in /Users/paulo/.conan/data/openssl/1.1.1k/_/_/build/4ac31d5d0c1627657f3e62f1b22936dec2100590
openssl/1.1.1k: Generator txt created conanbuildinfo.txt
openssl/1.1.1k: Aggregating env generators
openssl/1.1.1k: Calling build()
openssl/1.1.1k: using target: conan-Release-iOS-armv7-apple-clang-13 -> iphoneos-cross
openssl/1.1.1k: my %targets = (
    "conan-Release-iOS-armv7-apple-clang-13" => {
        inherit_from => [ "iphoneos-cross" ],
        cflags => add("-O3 -fPIC -mios-version-min=9.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.4.sdk -arch armv7"),
        cxxflags => add("-O3 -fPIC -mios-version-min=9.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.4.sdk -arch armv7"),
        defines => add("NDEBUG"),
        includes => add(),
        lflags => add(""),
        
        
        
        cc => "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang",
        cxx => "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++",
        ar => "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ar",
        ranlib => "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib",
        perlasm_scheme => "ios32",
    },
);

openssl/1.1.1k: ['"conan-Release-iOS-armv7-apple-clang-13"', 'no-shared', '--prefix="/Users/paulo/.conan/data/openssl/1.1.1k/_/_/package/4ac31d5d0c1627657f3e62f1b22936dec2100590"', '--openssldir="/Users/paulo/.conan/data/openssl/1.1.1k/_/_/package/4ac31d5d0c1627657f3e62f1b22936dec2100590/res"', 'no-unit-test', 'threads', 'PERL=perl', 'no-tests', '--release', '-fPIC']
Configuring OpenSSL version 1.1.1k (0x101010bfL) for conan-Release-iOS-armv7-apple-clang-13
Using os-specific seed configuration
Creating configdata.pm
Creating Makefile

**********************************************************************
***                                                                ***
***   OpenSSL has been successfully configured                     ***
***                                                                ***
***   If you encounter a problem while building, please open an    ***
***   issue on GitHub <https://github.com/openssl/openssl/issues>  ***
***   and include the output from the following command:           ***
***                                                                ***
***       perl configdata.pm --dump                                ***
***                                                                ***
***   (If you are new to OpenSSL, you might want to consult the    ***
***   'Troubleshooting' section in the INSTALL file first)         ***
***                                                                ***
**********************************************************************
perl "-I." -Mconfigdata "util/dofile.pl" \
	    "-oMakefile" include/crypto/bn_conf.h.in > include/crypto/bn_conf.h
perl "-I." -Mconfigdata "util/dofile.pl" \
	    "-oMakefile" include/crypto/dso_conf.h.in > include/crypto/dso_conf.h
perl "-I." -Mconfigdata "util/dofile.pl" \
	    "-oMakefile" include/openssl/opensslconf.h.in > include/openssl/opensslconf.h
/Applications/Xcode.app/Contents/Developer/usr/bin/make depend && /Applications/Xcode.app/Contents/Developer/usr/bin/make _all
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang  -I. -Iinclude -fPIC -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.4.sdk -fno-common -O3 -fPIC -mios-version-min=9.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.4.sdk -arch armv7 -O3 -fPIC -DOPENSSL_PIC -DOPENSSLDIR="\"/Users/paulo/.conan/data/openssl/1.1.1k/_/_/package/4ac31d5d0c1627657f3e62f1b22936dec2100590/res\"" -DENGINESDIR="\"/Users/paulo/.conan/data/openssl/1.1.1k/_/_/package/4ac31d5d0c1627657f3e62f1b22936dec2100590/lib/engines-1.1\"" -D_REENTRANT -DNDEBUG -DNDEBUG  -MMD -MF apps/app_rand.d.tmp -MT apps/app_rand.o -c -o apps/app_rand.o apps/app_rand.c
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang  -I. -Iinclude -fPIC -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.4.sdk -fno-common -O3 -fPIC -mios-version-min=9.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.4.sdk -arch armv7 -O3 -fPIC -DOPENSSL_PIC -DOPENSSLDIR="\"/Users/paulo/.conan/data/openssl/1.1.1k/_/_/package/4ac31d5d0c1627657f3e62f1b22936dec2100590/res\"" -DENGINESDIR="\"/Users/paulo/.conan/data/openssl/1.1.1k/_/_/package/4ac31d5d0c1627657f3e62f1b22936dec2100590/lib/engines-1.1\"" -D_REENTRANT -DNDEBUG -DNDEBUG  -MMD -MF apps/apps.d.tmp -MT apps/apps.o -c -o apps/apps.o apps/apps.c

[franramirez688]

Hi @paulocoutinhox

The problem is exactly the same as @memsharded said above (https://github.com/conan-io/conan/issues/11191#issuecomment-1120301634). Those recipes are using legacy generators instead of CMakeToolchain which is the new one that contains this bitcode logic.

To see how it works, you can try it easily by creating your own mytest recipe and running the conan create:

$ mkdir conan_test && cd conan_test
$ conan new mytest/1.0 -m cmake_lib
$ conan create . -c tools.apple:enable_bitcode=True

That mytest/1.0 recipe is using the new generators (including the CMakeToolchain one):

    # ...
    def generate(self):
        tc = CMakeToolchain(self)
        tc.generate()

Checking the library created now:

$ otool -l [PATH_TO_CONAN_DATA_LIB]/libmytest.a | grep bitcode
  sectname __bitcode

And there it is.

[paulocoutinhox]

Thanks, i will wait all the recipes be updated to remove it from my project.