[R-SIG-Mac] Need for `-headerpad_max_install_names` with `--enable-R-framework`

[Heather Turner]

Hi Simon,

I am configuring with 

$TOP_SRCDIR/configure --enable-R-framework --disable-java FW_VERSION=R-devel

and config.site

CC=clang
OBJC=$CC
FC="/opt/gfortran/bin/gfortran -mtune=native"
CPPFLAGS='-isystem /opt/R/arm64/include'
CXX=clang++
PKG_CONFIG_PATH=/opt/R/arm64/lib/pkgconfig:/usr/lib/pkgconfig
CFLAGS="-falign-functions=8 -g -O0"
FFLAGS="-g -O2 -mmacosx-version-min=11.0"
FCFLAGS="-g -O2 -mmacosx-version-min=11.0"
LDFLAGS="-L/opt/R/arm64/lib -L/opt/gfortran/lib"
CPPFLAGS="-isystem /opt/R/arm64/include -I/opt/R/arm64/include"

[this is the version before adding MAIN_LDFLAGS="-Wl,-headerpad_max_install_names"]

I'm using Command Line Tools only (no full Xcode installed).

macOS version: Sequoia 15.4.1 (24E263)
CLT version: 16.3.0.0.1.1742442376
Clang: Apple clang version 17.0.0 (clang-1700.0.13.3)
Fortran: GNU Fortran (GCC) 8.2.0 (from https://mac.r-project.org/tools/gfortran-14.2-universal.pkg)
SDK version: 15.4
SDK path: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk

and could reproduce the issue on my side with an SVN checkout of R-devel 2025-05-15 r88204.

Hope that helps,

Heather

On Fri, May 16, 2025, at 4:43 AM, Simon Urbanek wrote:
> Heather,
>
> yes, please, since we cannot reproduce it, please provide your complete 
> configure flags, full info about your macOS version, tools used 
> (toolchain version and SDK). We are adding 
> -Wl,-headerpad_max_install_names for libraries (see etc/Makeconf, added 
> by configure.ac for darwin), but the binary itself has never caused 
> issues, so I wonder what makes your system produce smaller header that 
> won’t fit the paths.
>
> Thanks,
> Simon
>
>
>> On 16 May 2025, at 04:24, Heather Turner <ht using heatherturner.net> wrote:
>> 
>> Dear All,
>> 
>> I have been building R (on Apple M1 Pro) with `--enable-R-framework` so that I can use the built version of R in RStudio/Positron. My set up was working fine back in February or so, then in April (with the alpha version) I started to hit errors with `make install`:
>> 
>> Creating R framework ...
>>  libRlapack
>>  libRblas
>> error: /Library/Developer/CommandLineTools/usr/bin/install_name_tool: changing install names or rpaths can't be redone for: /Library/Frameworks/R.framework/Versions/R-devel/Resources/bin/exec/R <http://r.framework/Versions/R-devel/Resources/bin/exec/R> (for architecture arm64) because larger updated load commands do not fit (the program must be relinked, and you may need to use -headerpad or -headerpad_max_install_names)
>> <similar error for libR, snipped>
>> 
>> I only just got round to exploring further. I can fix the issue by adding 
>> 
>> MAIN_LDFLAGS="-Wl,-headerpad_max_install_names"
>> 
>> to my config.site, but I wonder why I didn't need to set this in the past. Also I wonder if this should be set by default, at least with `--enable-R-framework`?
>> 
>> Let me know if I can provide any information that might be helpful about my configuration/setup.
>> 
>> Best wishes,
>> Heather
>> 
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