Linuxbrew-core: gdb: error: no usable python found

Created on 6 Nov 2017  路  7Comments  路  Source: Homebrew/linuxbrew-core

I am trying to install gdb by using brew, after running brew install gdb, i got the error message as follow:

[lday@MyCentOS7VM ~]$ brew install gdb
==> Downloading https://ftp.gnu.org/gnu/gdb/gdb-8.0.1.tar.xz
Already downloaded: /home/lday/.cache/Homebrew/gdb-8.0.1.tar.xz
==> ./configure --prefix=/home/linuxbrew/.linuxbrew/Cellar/gdb/8.0.1 --with-python=/home/linuxbrew/.linuxbrew
==> make
Last 15 lines from /home/lday/.cache/Homebrew/Logs/gdb/02.make:
checking size of unsigned __int128... 16
checking for library containing dlopen... (cached) -ldl
checking whether to use expat... auto
checking for libexpat... yes
checking how to link with libexpat... -lexpat
checking for XML_StopParser... yes
checking whether to use python... /home/linuxbrew/.linuxbrew
checking for python2.7... no
checking for python2.6... no
checking for python2.5... no
checking for python2.4... no
configure: error: no usable python found at /home/linuxbrew/.linuxbrew
make[1]: *** [configure-gdb] Error 1
make[1]: Leaving directory `/tmp/gdb-20171106-33198-e964ey/gdb-8.0.1'
make: *** [all] Error 2

READ THIS: https://github.com/Linuxbrew/brew/blob/master/docs/Troubleshooting.md#troubleshooting
Please do not report this issue to Homebrew/brew or Homebrew/core, which support macOS only.

i have install python27 by brew install python, and the python header file has been instatlled at:

[lday@MyCentOS7VM python2.7]$ pwd
/home/linuxbrew/.linuxbrew/include/python2.7
[lday@MyCentOS7VM python2.7]$ ll
total 680
-rw-r--r--. 1 lday lday 45225 Sep 17 01:49 abstract.h
-rw-r--r--. 1 lday lday  1099 Sep 17 01:49 asdl.h
-rw-r--r--. 1 lday lday   230 Sep 17 01:49 ast.h
-rw-r--r--. 1 lday lday   792 Sep 17 01:49 bitset.h
-rw-r--r--. 1 lday lday   912 Sep 17 01:49 boolobject.h
-rw-r--r--. 1 lday lday   922 Sep 17 01:49 bufferobject.h
-rw-r--r--. 1 lday lday  1941 Sep 17 01:49 bytearrayobject.h
-rw-r--r--. 1 lday lday  2804 Sep 17 01:49 bytes_methods.h
-rw-r--r--. 1 lday lday  1152 Sep 17 01:49 bytesobject.h
-rw-r--r--. 1 lday lday   651 Sep 17 01:49 cellobject.h
...

the gist-logs has been updated: https://gist.github.com/927c7000f3b6fb84d48e053ba265b4f6

[lday@MyCentOS7VM python2.7]$ brew gist-logs gdb
https://gist.github.com/927c7000f3b6fb84d48e053ba265b4f6

thanks for help

bug build failure outdated stale
Source
picture lday0321

Most helpful comment

I've got the same issue. I managed to fix my case by:

diff --git a/Formula/gdb.rb b/Formula/gdb.rb
index d903cea484..86b6cda5f5 100644
--- a/Formula/gdb.rb
+++ b/Formula/gdb.rb
@@ -44,7 +44,7 @@ class Gdb < Formula
     args << "--enable-targets=all" if build.with? "all-targets"

     if build.with? "python"
-      args << "--with-python=#{HOMEBREW_PREFIX}"
+      args << "--with-python=#{HOMEBREW_PREFIX}/bin/python2"
     elsif OS.mac?
       args << "--with-python=/usr"
     end

The problem appears to be related to configure trying to look for python in the wrong path:

{HOMEBREW_PREFIX} instead of #{HOMEBREW_PREFIX}/bin/python2

picture Char-Aznable on 8 Nov 2017
👍2 🎉1

All 7 comments

The problem should be with guile. I fixed it editing the gdb.rb formula file locally and adding "--with-guile" option to configure.

I don't know how this can be fixed upstream as it seems to be a problem between gdb and guile 2.2.

crisidev picture crisidev on 7 Nov 2017

even if i change the gdb.rb locally and use "--with-guile", i still got the sam error msg:

[lday@MyCentOS7VM ~]$ brew install gdb
==> Downloading https://ftp.gnu.org/gnu/gdb/gdb-8.0.1.tar.xz
Already downloaded: /home/lday/.cache/Homebrew/gdb-8.0.1.tar.xz
==> ./configure --prefix=/home/linuxbrew/.linuxbrew/Cellar/gdb/8.0.1 --with-guile --with-python=/home/linuxbrew/.linuxbrew
==> make
Last 15 lines from /home/lday/.cache/Homebrew/Logs/gdb/02.make:
checking size of unsigned __int128... 16
checking for library containing dlopen... (cached) -ldl
checking whether to use expat... auto
checking for libexpat... yes
checking how to link with libexpat... -lexpat
checking for XML_StopParser... yes
checking whether to use python... /home/linuxbrew/.linuxbrew
checking for python2.7... no
checking for python2.6... no
checking for python2.5... no
checking for python2.4... no
configure: error: no usable python found at /home/linuxbrew/.linuxbrew
make[1]: *** [configure-gdb] Error 1
make[1]: Leaving directory `/tmp/gdb-20171108-32757-v9sd5p/gdb-8.0.1'
make: *** [all] Error 2

READ THIS: https://github.com/Linuxbrew/brew/blob/master/docs/Troubleshooting.md#troubleshooting
Please do not report this issue to Homebrew/brew or Homebrew/core, which support macOS only.

These open issues may also help:
no usable python found when install gdb https://github.com/Linuxbrew/homebrew-core/issues/4885
gdb: fix add --without-python parameter on linux platform as needed https://github.com/Linuxbrew/homebrew-core/pull/4896
lday0321 picture lday0321 on 8 Nov 2017

I've got the same issue. I managed to fix my case by:

diff --git a/Formula/gdb.rb b/Formula/gdb.rb
index d903cea484..86b6cda5f5 100644
--- a/Formula/gdb.rb
+++ b/Formula/gdb.rb
@@ -44,7 +44,7 @@ class Gdb < Formula
     args << "--enable-targets=all" if build.with? "all-targets"

     if build.with? "python"
-      args << "--with-python=#{HOMEBREW_PREFIX}"
+      args << "--with-python=#{HOMEBREW_PREFIX}/bin/python2"
     elsif OS.mac?
       args << "--with-python=/usr"
     end

The problem appears to be related to configure trying to look for python in the wrong path:

{HOMEBREW_PREFIX} instead of #{HOMEBREW_PREFIX}/bin/python2

Char-Aznable picture Char-Aznable on 8 Nov 2017
👍2 🎉1

@lday0321 i was with my phone and I made a typo. The configure option is "--without-guile".. sorry about that.

crisidev picture crisidev on 8 Nov 2017

@Char-Aznable , thanks, it works for me!

    if build.with? "python"
      # args << "--with-python=#{HOMEBREW_PREFIX}"
      args << "--with-python=#{HOMEBREW_PREFIX}/bin/python2"
    elsif OS.mac?
      args << "--with-python=/usr"
    end

[lday@MyCentOS7VM ~]$ brew install gdb
Updating Homebrew...
==> Auto-updated Homebrew!
Updated Homebrew from  to .
Updated 1 tap (homebrew/core).
No changes to formulae.

==> Downloading https://ftp.gnu.org/gnu/gdb/gdb-8.0.1.tar.xz
Already downloaded: /home/lday/.cache/Homebrew/gdb-8.0.1.tar.xz
==> ./configure --prefix=/home/linuxbrew/.linuxbrew/Cellar/gdb/8.0.1 --with-python=/home/linuxbrew/.linuxbrew/bin/python2
==> make
==> make install
==> Caveats
gdb requires special privileges to access Mach ports.
You will need to codesign the binary. For instructions, see:

  https://sourceware.org/gdb/wiki/BuildingOnDarwin

On 10.12 (Sierra) or later with SIP, you need to run this:

  echo "set startup-with-shell off" >> ~/.gdbinit
==> Summary
馃嵑  /home/linuxbrew/.linuxbrew/Cellar/gdb/8.0.1: 64 files, 55MB, built in 5 minutes 26 seconds
lday0321 picture lday0321 on 9 Nov 2017

A PR to make this change would be quite welcome.

sjackman picture sjackman on 9 Nov 2017

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

stale[bot] picture stale[bot] on 30 Nov 2017
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